CurrentColorado Rocky Mountain Health PlansPolicy CSRAD007OH.E

UN-CSRAD007OH.E - Adult Musculoskeletal Imaging Guidelinesopen_in_new

State-specific (Ohio) UnitedHealthcare Community Plan guideline V1.0.2026 defining appropriate use, coverage determination, documentation, and coding guidance for adult musculoskeletal and related advanced imaging procedures (CT, MRI, US, PET, nuclear medicine, 3D rendering, image-guidance). Applies only to Ohio; investigational/unproven services evaluated per Ohio Administrative Code 5160-1-01.

Policy Summary

PayerColorado Rocky Mountain Health Plans

PolicyUN-CSRAD007OH.E - Adult Musculoskeletal Imaging Guidelinesopen_in_new

Policy CodePolicy CSRAD007OH.E

Change TypeClarified (evidence-based updates noted)

Effective DateFebruary 3, 2026

Next Review DateN/A

Key ActionProviders must submit pertinent clinical evaluation since onset/change in symptoms (history, physical, labs, prior imaging) including plain x‑rays from the current episode to establish medical necessity.

SourceLink

POLICY UPDATE CHANGES

Policy history lists annual and interim evidence-based updates on 02/01/2024, 07/01/2024, 05/01/2025, and 11/06/2025.

V1.0.2026Guideline Version

Ohio onlyJurisdiction

1Unit of guidance codes per encounter

6 weeks

Common conservative care threshold

23D rendering CPT options

Coverage Summary

This document is the UnitedHealthcare Community Plan Adult Musculoskeletal Imaging Guidelines (Cardiovascular and Radiology Imaging Guidelines V1.0.2026) for Ohio only. It provides evidence-based coverage and coding guidance for advanced imaging and related procedures including CT, MRI, Ultrasound (US), PET, Nuclear Medicine (NM), 3D rendering (CPT 76376/76377), and image-guided procedures to help select appropriate modalities, optimize contrast use, and reduce overutilization. This is document part 1 of 6.

Coverage stance for the guideline content is mixed: many advanced imaging studies are supported when specific clinical prerequisites and indications are met, while some services (investigational techniques, certain whole-body studies, or imaging for conditions unlikely to change management) are not supported. Key, high-level actionable requirements include: obtain and document a pertinent clinical evaluation and any initial plain radiographs performed after the current episode of symptoms started or changed; where specified, require a trial of provider-directed conservative treatment (commonly at least 6 weeks with clinical re-evaluation) before advanced imaging; and ensure appropriate modality/contrast selection per the condition-specific rules.

Operational and coding notes emphasized in this part include that plain x-rays from the current episode are required for spine and many musculoskeletal requests before advanced imaging will be considered; the common conservative care threshold is 6 weeks; and for image-guidance billing the unit of service = 1 per individual encounter (date of service) (only one guidance code unit should be reported per encounter).

Key thresholds and quick facts

Conservative care trial duration>= 6 weeks

Occult/stress fracture plain x-ray timingInitial plain x-rays obtained a minimum of 14 days after onset; repeat x‑rays non-diagnostic after >=10 days conservative treatment

QCT repeat (screening) intervalNo sooner than every 2 years

Unit of guidance codes per encounter1

Soft tissue mass size threshold> 5 cm diameter

3D rendering CPT options76376 (scanner workstation) and 76377 (independent workstation)

Medical-Necessity Criteria (grouped by topic)

General Eligibility and Medical Necessity

Covered when ALL of the following are met:

Patient is an adult (age >= 18 years).

Pertinent clinical evaluation has been performed since onset or change in symptoms (detailed history, focused physical exam, and relevant labs/imaging when applicable).

The requested advanced musculoskeletal imaging will directly impact patient management (diagnosis, treatment planning, or procedural guidance).

Plain radiographs (x-rays) of the affected site are required unless plain films are not possible, are nondiagnostic for the specific clinical question, or contraindicated; if performed, films must be from the current episode of symptoms or within the timeframe specified in the condition-specific guideline.

Coding (grouped by status)

3D Rendering CPT CodesCPTCovered

76376	3D rendering not requiring image post-processing on independent workstation
76377	3D rendering requiring image post-processing on independent workstation

Image Guidance / Stereotactic / MR guidance / CT guidanceCPTCovered

19085	Biopsy, breast, with placement of breast localization device(s), percutaneous; first lesion, including MR guidance
19086	Biopsy, breast... each additional lesion, including MR guidance
75989	Imaging guidance for percutaneous drainage with placement of catheter
76942	Ultrasonic guidance for needle placement
77011	CT guidance for stereotactic localization
77012	CT guidance for needle placement
77013	CT guidance for, and monitoring of parenchymal tissue ablation
77021	MR guidance for needle placement
77022	MR guidance for, and monitoring of parenchymal tissue ablation
70486	CT stereotactic localization diagnostic CT example referenced

1–10 of 11

1/2

MRI Contrast/Investigational Code MentionCPTExperimental

C9791

MRI utilizing Xenon Xe 129 for contrast - considered investigational/experimental

Guidance and Image-Guidance Codes (guidance)CPTCovered

77012	Fluoroscopic guidance for needle placement (CT guidance example cited)
77013	CT guidance for ablation (non-bone ablation only)
77021	MR guidance for needle placement (not appropriate for breast biopsy)
77022	MR guidance for ablation/monitoring/coagulative necrosis confirmation
76942	Ultrasound guidance for needle placement (referenced modality guidance)
77002	Fluoroscopy guidance (referenced)
77003	Fluoroscopy guidance (referenced)
20982	CT guidance for bone tumor ablations

Unlisted Procedure CodesCPTCovered

76497	Unlisted CT procedure (diagnostic or interventional)
76498	Unlisted MR procedure (diagnostic or interventional)
78999	Unlisted procedure, diagnostic nuclear medicine

Limited CTCPTCovered

76380

Limited or follow-up CT scan (not medically necessary for treatment planning)

SPECT/CT and SPECT CodesCPTCovered

78830	SPECT with concurrently acquired CT, single area, single day
78831	SPECT, 2 or more days or multiple areas
78832	SPECT with CT, minimum 2 areas, single day or multi-day
78300	Bone or Joint Imaging Limited (planar)
78803	Tomographic (SPECT) single area (if 78300 and 78803 requested, only 78803 approved)
78072	SPECT/CT parathyroid nuclear imaging (effective 2013-01-01)

3-D Rendering CodesCPTCovered

76376	3-D image post-processing on scanner workstation
76377	3-D image post-processing on independent workstation

Musculoskeletal MRI/CT/US/Bone Imaging Codes (representative list from Procedure Codes Associated with Musculoskeletal Imaging section)CPT

73218	MRI Upper Extremity, other than joint, without contrast
73219	MRI Upper Extremity, other than joint, with contrast
73220	MRI Upper Extremity without and with contrast
73221	MRI Upper Extremity, any joint, without contrast
73222	MRI Upper Extremity, any joint, with contrast
73223	MRI Upper Extremity, any joint, without and with contrast
73225	MR Angiography Upper Extremity without or with contrast
73718	MRI Lower Extremity, other than joint, without contrast
73719	MRI Lower Extremity, other than joint, with contrast
73720	MRI Lower Extremity without and with contrast

1–10 of 43

1/5

Nuclear Medicine / Bone Scan / SPECT / PET CPT codes mentionedCPTCovered

78102	Tc-99m sulfur colloid marrow imaging (example code listed)
78103	Tc-99m sulfur colloid marrow imaging (example code listed)
78104	Tc-99m sulfur colloid marrow imaging (example code listed)
78300	Bone scan, CPT per policy text
78305	Bone scan, CPT per policy text
78306	Tc-99m bone scan whole-body
78315	Triple phase bone scan
78800	Labeled leukocyte scan (example listed)
78801	Labeled leukocyte scan (example listed)
78802	Labeled leukocyte scan (example listed)

1–10 of 16

1/2

CT/MRI/US CPT codes for joints and proceduresCPTCovered

73200	CT without contrast, upper extremity (e.g., elbow/wrist/shoulder)
73201	CT with contrast (shoulder labrum)
73221	MRI without contrast of shoulder
73222	MRI with contrast of shoulder
73700	CT without contrast, lower extremity (e.g., hip/knee/ankle)
72192	CT pelvis without contrast (alternative code listed for hip joint replacement planning)
73701	CT with contrast (hip labrum, CT arthrogram) or knee arthrogram
73721	MRI without contrast of hip/knee/ankle
73722	MRI with contrast of hip
76881	Ultrasound, joint - US for foreign bodies / RA

1–10 of 11

1/2

Commonly referenced CPT codes (covered when criteria met)CPTCovered

73718	MRI Foot without contrast
73700	CT Foot without contrast
73720	MRI without and with contrast (foot/diabetic foot example)
76881	Ultrasound, nonvascular, complete
76882	Ultrasound, nonvascular, limited
73222	MRI Shoulder with contrast
73221	MRI Shoulder without contrast
73201	CT Shoulder with contrast
73200	CT Shoulder without contrast
71250	CT Chest without contrast

1–10 of 18

1/2

CPT codes explicitly not medically necessary for limb length discrepancyCPTNot Covered

73700	CT diagnostic advanced imaging (not medically necessary for limb length discrepancy)
73701	CT diagnostic advanced imaging (not medically necessary for limb length discrepancy)
73702	CT diagnostic advanced imaging (not medically necessary for limb length discrepancy)

Ultrasound (covered when criteria met)CPTCovered

76881	Ultrasound, extremity
76882	Ultrasound, extremity (second or comparative)

MRI without contrast (covered when criteria met)CPTCovered

73221	MRI shoulder without contrast
73218	MRI hand without contrast
73721	MRI hip/knee without contrast
73718	MRI foot without contrast
72195	MRI pelvis without contrast
71550	MRI chest without contrast

MRI with contrast / MRI arthrogram (covered when criteria met)CPTCovered

73222	MRI shoulder with contrast
73223	MRI elbow/wrist without and with contrast (arthrogram type studies referenced)
73722	MRI knee with contrast
73220	MRI hand without and with contrast

CT without/with contrast (covered when criteria met or if MRI contraindicated)CPTCovered

73200	CT without contrast, upper extremity
73201	CT with contrast, upper extremity
73700	CT without contrast, lower extremity
73701	CT with contrast, lower extremity

Quantitative CT for bone density (covered when criteria met)CPTCovered

77078

Quantitative CT for bone mineral density (QCT)

Ultrasound codes (commonly recommended)CPTCovered

76881	Ultrasound, nonvascular, real time with image documentation; limited
76882	Ultrasound, nonvascular, real time with image documentation; complete

Shoulder MRI / CT (post-op) codesCPTCovered

73221	MRI, shoulder without contrast
73223	MRI, shoulder without and with contrast
73200	CT, shoulder without contrast
73201	CT, shoulder with contrast

Upper extremity MRI/CT codesCPTCovered

73218	MRI, hand without contrast
73221	MRI, elbow/wrist without contrast
73222	MRI with contrast (region-specific as used above)
73200	CT, elbow/wrist without contrast

Hip MRI / CT codesCPTCovered

73721	MRI, hip without contrast
73723	MRI, hip without and with contrast
73700	CT, hip/pelvis without contrast
73701	CT with contrast

Knee/Ankle/Foot MRI / CT codesCPTCovered

73721	MRI, knee without contrast
73722	MRI, knee with contrast
73718	MRI, foot without contrast
73720	MRI, foot without and with contrast
73700	CT, lower extremity without contrast

Pelvis/Complex fractures CTCPTCovered

72192

CT pelvis without contrast (complex pelvic ring/acetabular fracture surgery follow-up)

Provider Actions & Billing Rules

Documentation Required

Submit adequate clinical information

Submit adequate clinical information to support medical necessity for advanced imaging and procedures. Include detailed history, physical exam findings since onset/change in symptoms, pertinent labs, prior imaging (including plain x‑rays for current episode), treatments tried and response, and documentation of conservative care when required. Lack of adequate documentation or failure to show conservative management may result in denial or require retrospective review.

Include dates and results of prior plain x‑rays when the episode of symptoms began or changed
Document face-to-face or other meaningful clinical contact (telehealth, phone, message) since symptom onset when applicable
For suspected joint infection, include aspiration results and microbiology when available

Billing Rule

Plain x‑ray requirement

Background & Evidence

Purpose: These UnitedHealthcare cardiovascular and radiology imaging guidelines provide evidence-based clinical criteria to guide appropriate advanced imaging and procedure selection (CT, MRI, US, PET, NM), 3D rendering, and image-guided procedures, with an emphasis on modality selection, contrast use, coding, and reducing overutilization. They are based on major society guidelines, peer-reviewed literature, and input from practicing physicians and undergo a formal annual review process.

Evidence base and review: The guidelines cite ACR Appropriateness Criteria, peer-reviewed studies, and other authoritative sources as the primary evidence base. The guideline set is formally reviewed and updated regularly (annual formal review with interim updates as needed) as documented in the policy history and prefatory sections.

Jurisdiction/scope note: These criteria apply to Ohio only (state-specific application) and evaluation of investigational/unproven services or coverage limits will be performed in accordance with Ohio Administrative Code 5160-1-01.

Evidence Item	Summary
FDA gadolinium
FDA noted gadolinium retention; no evidence currently that brain retention is harmful; GBCA use should be limited to necessary circumstances
ACR references
Multiple ACR Appropriateness Criteria and ACR practice parameters cited throughout guideline sections (shoulder, knee, hip, stress fracture, osteomyelitis, arthroplasty) supporting imaging choices
Sensitivity/Specificity notes
Bone scan: high sensitivity for stress fractures and infection but limited specificity (~45% for osteomyelitis in some contexts); MRI often more specific with less radiation exposure
Guideline version
Cardiovascular and Radiology Imaging Guidelines V1.0.2026 (Effective February 3, 2026)

Definitions

Concurrent supervision: Concurrent supervision is defined as active physician participation and monitoring of the 3D reconstruction process, including anatomic design, determination of tissue types/structures to display, selection of images/cine loops to archive, and monitoring/adjustment of the 3D work product.

Unit of service for guidance codes: The unit of service for guidance codes is the individual encounter (date of service), not the number of lesions, aspirations, biopsies, injections, or localizations. Only one unit of any radiologic guidance code should be reported per encounter.

Unit of service (guidance codes): For CT/MR/US guidance and related codes (e.g., 77012, 77021, 76942, 77002-77003, 77013, 77022), billing must reflect a single unit per encounter and these guidance codes include the imaging necessary to guide percutaneous procedures.

WBMRI reporting: Whole-body MRI has no established CPT/HCPCS codes and should be reported as CPT 76498 when appropriate (WBMRI generally not supported except select indications).

Provider-directed conservative treatment: Provider-directed conservative treatment means non-surgical measures directed by the treating provider (e.g., rest, immobilization, physical therapy, medications) with clinical re-evaluation; duration requirements are specified per indication and commonly require 6 weeks when indicated.

Advanced imaging definition: Advanced imaging refers to US, MRI, CT, and Quantitative CT (QCT) as referenced by CPT codes in the guideline and is distinguished from initial/conventional imaging (plain radiographs).

Note: concurrent supervision and unit-of-service rules are required and documented for 3D rendering and guidance codes; prior authorization may be required for some 3D rendering codes even if the base study does not require prior authorization.

Revision History

02/01/2024policy_update

Annual evidence-based updates (summary notes: annual evidence-based updates applied to guideline).

07/01/2024policy_update

Interim evidence-based updates (summary notes: interim evidence-based updates applied to guideline).

05/01/2025policy_update

Annual evidence-based updates (summary notes: annual evidence-based updates applied to guideline).

Policy Summary

PayerColorado Rocky Mountain Health Plans

PolicyUN-CSRAD007OH.E - Adult Musculoskeletal Imaging Guidelinesopen_in_new

Policy CodePolicy CSRAD007OH.E

Change TypeClarified (evidence-based updates noted)

Effective DateFebruary 3, 2026

Next Review DateN/A

SourceLink

On This Page

Requested service is not investigational, experimental, or unproven for the indication.

Note: For follow-up or routine surveillance imaging described in condition-specific sections, a recent clinical evaluation may be unnecessary; follow those section-specific exceptions.

CT vs MRI substitution and contrast considerations

Apply ALL of the following decision rules when choosing CT versus MRI and when contrast is considered:

Appropriateness for substituting CT for MRI (or vice versa):

• Use MRI preferentially for soft-tissue, marrow, occult stress/insufficiency fractures, inflammatory arthritis, osteonecrosis, meniscal and ligamentous injuries when available and not contraindicated.

• Use CT preferentially for fine cortical detail, complex fracture characterization, preoperative bony surgical planning, and when MRI is contraindicated or unavailable.

Contraindications and considerations:

• MRI contraindications (e.g., pacemaker/ICD not MRI-conditional, certain implanted devices, severe claustrophobia, inability to cooperate) justify CT when CT can answer the clinical question.

• CT iodinated contrast is indicated when vascular detail or enhancement characterization is necessary; contraindications to iodinated contrast (severe allergy not amenable to premedication, renal insufficiency) should be documented and alternate modalities considered.

Operator: all of the following must be met when making substitution/contrast decisions:

• Documentation of clinical reason for preferring one modality over another in the request or chart.

• Prior plain radiographs unless an exception applies.

• If contrast is to be administered unexpectedly based on findings during a non-contrast study, documentation in the imaging record is required.

CT/MR/US Guidance Codes and Billing Rules

Billing and coding guidance for combined-modality and guidance-code use. Apply ALL rules below:

Guidance codes (e.g., 77012, 77021 where applicable) should be billed only when the documented service meets the CPT descriptor and when a separate payable component exists beyond the primary imaging study.

When a guidance code is reported in conjunction with an advanced imaging study, documentation must show distinct additional work or equipment use (e.g., separate real-time imaging guidance for percutaneous access) to support separate billing.

Do not unbundle guidance codes from the primary imaging study when the guidance is inherent and integral to the billed advanced imaging procedure based on CPT definitions.

Modifiers and site-specific billing rules must follow payer-specific rules; when guidance codes are reported with therapeutic/procedural CPTs, ensure modifier usage (e.g., -59/XS) is supported and documented.

All billed codes must reflect the actual work performed and be supported in the imaging/procedural report to avoid denials for unbundling or lack of medical necessity.

Specific CPT guidance (selected examples)

Selected CPT-specific billing examples and rules (apply ALL that follow):

Breast biopsy guidance: CPT 19085/19086 — select the code that matches the imaging modality and approach; document localization method, laterality, and whether specimen radiograph was performed.

Stereotactic/percutaneous procedures with imaging: use the CPT descriptor to select the correct guidance code; document separate guidance time and complexity if reporting as distinct from the primary procedure.

Fluoroscopic or CT guidance for injections/biopsies: when both guidance and procedural codes are billed, document distinct elements supporting each code (planning, guidance imaging, needle manipulation, confirmation of placement).

When guidance codes pair with code pairs such as 77013/20982 or other device-implantation codes, follow CPT pairing rules and payer modifier guidance; ensure documentation supports separate payable components.

General Criteria for Advanced Musculoskeletal Imaging

General prerequisites and conservative care requirements for advanced musculoskeletal imaging. Apply ALL of the following unless condition-specific exceptions exist:

Plain radiographs from the current episode of symptoms or since the change in symptoms are required before authorization of most advanced imaging studies.

Conservative therapy and/or a period of appropriate non-invasive management is required for many non-acute musculoskeletal complaints prior to advanced imaging. Conservative care may include activity modification, analgesics/NSAIDs, brief physical therapy trial, immobilization, and topical measures as clinically appropriate.

Documented failure or inadequate response to conservative measures must be included in the clinical record and authorization request when conservative care is required by the condition-specific guideline.

Exceptions: acute trauma with concern for complex fracture, neurologic deficit, suspected septic joint/osteomyelitis, or surgical planning where conservative care would be inappropriate or harmful.

Nested conservative care detail (ALL):

• Conservative care must be contemporaneous with the current episode of symptoms; list types, start dates, duration, and response.

• If conservative care was contraindicated or not feasible, documentation must explain the reason and the clinical judgment that led to immediate advanced imaging.

3D Rendering (CPT 76376 / 76377) - Appropriateness

3D rendering (CPT 76376/76377) is appropriate when ALL of the following are satisfied:

Clinical scenarios where 3D rendering may be appropriate (ANY one of):

• Complex fracture characterization that will change surgical approach or fixation strategy.

• Preoperative planning for complex joint reconstruction, osteotomy, or deformity correction where 3D models alter surgical planning.

• Mandible/maxillofacial, pelvis, acetabular, or other anatomically complex surgical planning requiring spatial relationship visualization beyond standard multiplanar reconstructions.

Operational constraints (ALL must be met):

• 3D rendering is performed on a workstation distinct from the primary modality console and after the primary interpretation is completed.

• Documentation must state the clinical question addressed by the 3D rendering and how the rendering changed management or surgical planning.

• CPT 76376 is for simple 3D reconstruction; CPT 76377 is for complex/interactive rendering per CPT definitions — select the correct code per the work performed and document accordingly.

• Supervision and reporting: the rendering physician must document the methods and findings in the medical record; technologist-only post-processing without physician interpretation does not support physician-level CPT reporting.

Unlisted CT/MR/Nuclear Procedure Codes (76497/76498/78999)

Report unlisted CT/MR/nuclear procedure codes (e.g., 76497, 76498, 78999) only when ALL of the following apply:

The procedure performed does not have a specific CPT code that accurately describes the service.

A detailed report and supporting documentation (including indication, technique, images, and rationale why no listed CPT applies) are submitted with the claim to allow review and appropriate valuation.

If an established CPT code exists that reasonably describes the service, that code should be used instead of an unlisted code.

When using unlisted codes for novel or uncommon procedures, include operative/procedural notes, duration, complexity, and any work relative value justification to support medical necessity and reimbursement.

Limited CT (CPT 76380)

Limited CT (CPT 76380) is appropriate when ALL of the following are true:

Use limited CT for focused, non-contrast localizer or scout-type acquisitions that answer a narrowly-defined clinical question (examples: small field evaluation for radiolucent foreign body localization in the extremity, focused lucency near an implant).

Limited CT should NOT be used for radiation therapy treatment planning, comprehensive anatomic surveys, or when full diagnostic CT with multiplanar reconstructions is required.

Document the focused clinical question and the limited anatomical coverage on the imaging request and report.

SPECT/CT and Nuclear Procedure Coding

Hybrid SPECT/CT and nuclear procedure coding rules (ALL):

Report the nuclear medicine portion with the applicable nuclear CPT code(s) and report the CT portion separately when the CT meets the definition of a diagnostic CT (i.e., separate technical and professional components).

When CT is limited to attenuation correction or localization only and per CPT descriptors is considered integral, do not separately bill a diagnostic CT code unless additional diagnostic CT work was performed and documented.

Selecting CPT codes: choose codes that match the diagnostic extent and intent of each modality component; provide documentation distinguishing attenuation correction/localization CT from a diagnostic CT.

Secondary Interpretation

Interpretation of outside examinations and secondary reads follow ALL of the rules below:

When interpreting external imaging, the interpreting physician must state in the report that images from an outside facility were reviewed, list the studies reviewed (modality, date, and facility), and describe any limitations of the outside study.

CPT 76140 may be reported when a separate, medically necessary, second interpretation of an outside diagnostic imaging study is performed and documented; ensure payer-specific requirements for reporting 76140 are met.

Do not report secondary interpretation codes when reinterpretation is routine or bundled within the primary professional read per contract or payer policy.

Quantitative MR Analysis

Quantitative MR analysis codes (Category III mpMRI and other quantitative MR codes) are covered only when ALL apply:

The quantitative MR procedure is supported by condition-specific guideline criteria that reference these Category III codes or other validated, disease-specific quantitative protocols.

The request includes documentation of the specific quantitative technique, clinical rationale, and how the results will change management.

If the quantitative analysis is investigational or lacks clinical utility for the indication, it is not covered. See condition-specific sections for references to quantitative MR use.

HCPCS Code Handling

HCPCS codes reported in musculoskeletal imaging should be handled as follows (ALL):

Treat HCPCS codes using the same clinical and coding rules as CPT codes; ensure the HCPCS descriptor matches the service performed.

If a HCPCS code is non-specific or ambiguous for the musculoskeletal indication, map the service to the appropriate CPT code when possible or provide detailed documentation supporting the HCPCS selection.

Do not use HCPCS codes to bypass CPT-specific coverage rules; queries or denials may result if the HCPCS code does not align with clinical documentation.

Whole-Body CT/MRI/PET-MRI

Whole-body imaging and PET/MRI guidance (ALL):

Whole-body CT or MRI for diffuse musculoskeletal symptoms is generally not supported unless there is a specific guideline-supported indication (e.g., whole-body bone survey for multifocal metastatic disease when PET/CT is contraindicated and alternative modalities are insufficient).

PET/MRI is allowed only for indications where PET/MRI provides clear clinical advantage and is supported by condition-specific sections; when allowed, report PET and MRI components per CPT guidance and document the clinical rationale for PET/MRI versus PET/CT or separate PET and MRI.

When PET/MRI is used for focal musculoskeletal evaluation, ensure the imaging components meet the individual modality documentation and contrast requirements.

3-D Rendering (CPT 76376/76377)

Operational and billing rules for 3-D rendering (duplicate details emphasizing workstation and supervision — ALL must be met):

3-D rendering must be performed on a workstation separate from the primary acquisition console and be documented as post-processing that is distinct from routine multiplanar reconstruction.

Select CPT 76376 for limited/simple 3-D reconstructions and CPT 76377 for complex/interactive 3-D rendering as defined by CPT; documentation must describe the complexity and interactive elements.

Physician interpretation and documentation of the rendering are required to support physician-level CPT reporting; technologist-only processing does not support these CPTs.

Ensure supervision, training, and credentialing of personnel performing and interpreting 3-D rendering meet facility and payer requirements.

Imaging Technique Specific Statements

Modality-specific guidance for technique and reporting (ALL):

MRI: use dedicated joint coils and specific sequences tailored to the clinical question; consider IV gadolinium when evaluating synovitis, cartilage delamination, or tumors if not contraindicated and when contrast will change management.

CT: use thin-slice technique and multiplanar reconstructions for fracture characterization and preoperative planning.

Ultrasound: operator-dependent — ensure experienced sonographer or clinician performs the exam when US is used for soft-tissue foreign body localization, tendon evaluation, or image-guided procedures.

Nuclear medicine: reserve bone scintigraphy and SPECT/CT for indications where MRI/CT are insufficient or contraindicated; use FDG PET/CT selectively for suspected infection or when other modalities are non-diagnostic.

Nuclear Medicine (MS-28.1) - General criteria

General nuclear medicine criteria for musculoskeletal indications (ALL):

Bone scan (planar and SPECT) is indicated for multifocal osseous processes, unexplained elevated alkaline phosphatase with suspected metabolic bone disease, and when MRI is contraindicated for suspected occult fracture or stress reaction.

SPECT/CT is indicated when planar bone scintigraphy is equivocal and additional anatomic localization will change management.

FDG PET/CT is reserved for complex infection evaluation, occult metastatic disease assessment when conventional imaging is non-diagnostic, or when the clinical question requires metabolic information not provided by MRI/CT.

Osteoarthritis (MS-12.1) - CT/MRI indications for non-surgical and surgical planning

CT/MRI indications for osteoarthritis and preoperative planning (ALL):

Advanced imaging for osteoarthritis is generally reserved for patients being considered for surgery or when symptoms are atypical or disproportionate to radiographic findings.

Preoperative CT is appropriate for bony surgical planning when detailed cortical anatomy or templating is required; preoperative MRI is appropriate for soft-tissue assessment prior to joint-preserving procedures.

For customized implant planning or patient-specific instrumentation, document the explicit surgical need and whether vendor-specific protocols apply.

Inflammatory Arthritis (MS-12.2)

Inflammatory arthritis imaging rules (ALL):

For suspected crystal arthropathy (gout/pseudogout) or pigmented villonodular synovitis (PVNS), initial workup should include appropriate labs (uric acid, synovial fluid analysis when aspirated) and plain radiographs.

MRI with or without contrast is indicated when soft-tissue synovial disease is suspected and will influence management (e.g., aspiration, surgical synovectomy).

For rheumatoid arthritis and early erosive disease, MRI may be requested to detect early synovitis/erosion when radiographs are normal or equivocal and clinical management would change.

Capsular/Synovial and Meniscal Dysfunction (MS-29.1)

Capsular, synovial, and meniscal dysfunction imaging rules (ALL):

Shoulder and hip labral or capsular pathology: MRI arthrography is preferred when intra-articular contrast will change diagnosis or surgical planning; plain MRI may suffice if arthrography is contraindicated.

Knee meniscal injury: MRI is indicated when the clinical exam is limited or discordant with radiographs and when the result will change management, except in well-examined cases where clinical findings alone justify operative referral.

Document prior attempts at conservative management where required; acute mechanical locking or significant joint instability may bypass conservative care requirements.

Foreign and Loose Bodies (MS-6.1)

Management of foreign and loose bodies (ALL):

Ultrasound is preferred for localization of radiolucent soft-tissue foreign bodies in the extremities when operator expertise is available.

CT or MRI may be used when ultrasound is nondiagnostic, not feasible, or when the foreign body lies adjacent to complex anatomy (e.g., intraarticular, peri-neurovascular).

Document the suspected material composition (radiopaque vs radiolucent), duration since injury, and the planned procedure (operative removal versus conservative management).

Acute Fractures (MS-5.1) - complex fractures

Imaging for complex acute fractures (ALL):

CT is preferred for multi-fragmentary, intra-articular, peri-articular, and pelvic/acetabular fractures to define fracture anatomy for surgical planning.

MRI is indicated when there is concern for occult extension, associated soft-tissue or ligamentous injury, or when marrow assessment affects management.

Ensure plain radiographs are available from the current episode; preoperative planning often requires CT with thin slices and 3-D reconstructions.

Acute Fractures (MS-5.1) - Medically Necessary

When advanced imaging is medically necessary for acute fractures (ALL):

Evidence of complex fracture on radiographs (comminution, articular step-off, displacement) that would alter surgical management.

Neurologic deficit, vascular compromise, or concern for open fracture when additional imaging will change acute management.

Inadequate visualization on radiographs for surgical planning or when prior imaging is from a different episode and cannot be used for the current decision-making.

Occult/Stress/Insufficiency Fracture or Reaction (MS-5.2)

Occult, stress, and insufficiency fracture imaging rules (ALL):

Plain radiographs may be negative early; MRI without contrast is the preferred test for suspected occult or stress fracture when clinical suspicion is high and radiographs are nondiagnostic.

If MRI is contraindicated or unavailable, bone scintigraphy or CT (with attention to cortical changes) may be used; document contraindications to MRI.

For typical stress reactions, follow-up radiographs may be adequate when symptoms are improving; if symptoms persist or worsen, advanced imaging is indicated.

Other Indications (MS-5.3)

Other fracture-related indications (ALL):

Delayed union or non-union: advanced imaging (CT or MRI) is indicated to assess bony bridging, hardware integrity, and surrounding soft tissues when plain radiographs are inconclusive.

Preoperative imaging for fracture revision or complex fixation planning requires current radiographs (within the timeframe specified in the condition-specific guideline) and appropriate CT or MRI depending on the clinical question.

General Infection/Osteomyelitis (MS-9.1)

General infection and osteomyelitis imaging criteria (ALL):

Initial evaluation should include clinical exam and relevant laboratory tests (CBC, ESR, CRP) and plain radiographs.

Use MRI with contrast for most suspected osteomyelitis or soft-tissue infection when not contraindicated; MRI provides superior evaluation of marrow and soft-tissue abscess.

In diabetic foot and complicated extremity infections, consider combined modalities (radiographs, MRI, and when indicated nuclear medicine or PET/CT) and involve specialty teams (podiatry/vascular/infectious disease) when appropriate.

Charcot Joint (MS-9.2) - Medically Necessary after failed conservative treatment

Charcot joint imaging after failed conservative care (ALL):

Advanced imaging (MRI or CT) is indicated after failed conservative treatment to assess extent of osseous and soft-tissue destruction and to guide surgical planning.

Document failed conservative measures and the timeframe of those treatments; include plain radiographs from the current episode.

Septic Joint (MS-9.2) - Medically Necessary

Septic joint imaging rules (ALL):

Aspiration and synovial fluid analysis should be performed as the initial diagnostic step when septic arthritis is suspected; document attempts and results.

If aspiration is nondiagnostic or not feasible and clinical concern persists, MRI with contrast or ultrasound-guided aspiration with adjunct imaging is indicated.

Include laboratory evidence of infection (elevated ESR/CRP, leukocytosis) with imaging request to support necessity.

Joint Instability and Dysfunction (MS-30.1) - Medically Necessary

Joint instability and dysfunction imaging rules (ALL):

Imaging selection is site-specific and guided by clinical exam and suspected pathology; for example, weight-bearing radiographs for foot/ankle instability, MRI for rotator cuff or labral pathology when repair is contemplated.

Younger individuals with acute traumatic instability may proceed to advanced imaging without prolonged conservative care when exam and clinical history support surgical referral.

Document the clinical exam findings, prior conservative care where applicable, and the specific management question the imaging will answer.

Ligament and Fascia Injury (MS-31.1) - Medically Necessary

Ligament and fascia injury imaging rules (ALL):

Knee ligament injury: MRI is indicated when the clinical exam is limited, equivocal, or when surgery is being considered; acute well-documented exam findings of instability may obviate the conservative care requirement.

Other joints: select MRI, CT, or ultrasound based on joint size, depth, and operator expertise; document rationale for modality selection.

Limb Length Discrepancy (MS-17.1) - Not Medically Necessary (advanced imaging)

Limb length discrepancy imaging guidance (ALL):

Advanced cross-sectional diagnostic imaging for isolated limb length discrepancy is generally not necessary; perform a scanogram (CPT 77073) for accurate length measurement.

If advanced imaging is requested, document why CT/MRI would change management beyond measurement (usually not supported).

Muscle and Tendon Injuries (MS-11.1) - Mixed necessity

Muscle and tendon imaging rules (ALL):

Muscle belly strains without focal defect: advanced imaging is usually not indicated unless atypical features or concern for complex injury exist.

Tendinopathy and suspected tendon rupture: ultrasound or MRI may be used depending on site and operator expertise; document clinical findings and how imaging will alter management.

Conservative care requirements apply for many overuse tendon conditions; acute suspected full-thickness tears being considered for repair may proceed to advanced imaging without prolonged conservative therapy.

Compartment syndrome

Compartment syndrome imaging guidance (ALL):

Acute compartment syndrome is a clinical diagnosis and advanced imaging is generally not required for diagnosis or emergent management.

Chronic exertional compartment syndrome: advanced imaging may support evaluation in selected cases when it will change management; document physiologic testing and clinical correlation.

Osteochondral lesions and fractures

Osteochondral lesion imaging rules (ALL):

MRI is preferred for suspected osteochondral lesions of the knee, talus, or elbow when radiographs are nondiagnostic and clinical management (conservative versus surgical) depends on lesion characterization.

CT may be used for detailed subchondral bone assessment or when MRI is contraindicated.

Osteonecrosis / Avascular necrosis

Osteonecrosis (AVN) imaging rules (ALL):

MRI is the preferred modality for early detection of osteonecrosis across sites (femoral head, scaphoid, lunate); plain radiographs are often insensitive early and should be obtained first.

CT may be used to assess subchondral collapse or when MRI is contraindicated.

Osteoporosis (QCT)

QCT and osteoporosis imaging (ALL):

Quantitative CT (QCT) for bone density assessment is appropriate when standard DXA is unavailable or when site-specific volumetric assessment is required and the result will change management.

Use population- and indication-appropriate protocols and avoid routine repeat QCT more frequently than recommended in condition-specific guidance.

General musculoskeletal pain (MS-32.1)

General musculoskeletal pain imaging rules (ALL):

For non-specific regional musculoskeletal pain, plain radiographs and a trial of conservative care are required before advanced imaging unless red-flag features (neurologic deficit, systemic signs, suspicion for fracture or infection) are present.

When conservative care fails, select modality based on site and suspected pathology (e.g., MRI for soft-tissue or marrow pathology, CT for bony detail).

Joint Replacement Post-Operative Follow-Up (MS-16.1)

Post-operative joint follow-up imaging rules (ALL):

Follow-up imaging after joint replacement is indicated for suspected complications (infection, loosening, periprosthetic fracture) and should include plain radiographs as first-line.

Advanced imaging (CT with metal artifact reduction, MRI with metal artifact sequences, or nuclear medicine studies) is appropriate when radiographs are nondiagnostic and will change management.

Document the timing of symptoms relative to surgery and include prior imaging for comparison.

General Musculoskeletal Post-Operative Follow-Up (MS-16.2)

General post-operative musculoskeletal imaging (ALL):

For other post-operative scenarios, advanced imaging is appropriate when specific clinical concerns (failed fusion, hardware failure, recurrent instability, infection) exist and plain radiographs are inconclusive.

Ensure imaging is appropriate to the anatomic region and that recent plain films are available.

Soft Tissue Mass (MS-10.1)

Soft tissue mass imaging rules (ALL):

Clinical features prompting imaging: mass >5 cm, deep to fascia, rapidly growing, painful, or associated neurologic deficit — these warrant advanced imaging (MRI with contrast preferred) to characterize and guide management.

Superficial, small, stable, painless masses may be evaluated initially with ultrasound; document growth or change to justify escalation to MRI.

Biopsy planning: MRI with contrast is preferred prior to biopsy for surgical planning and to avoid sampling error.

Bone Lesion (MS-10.2)

Bone lesion imaging rules (ALL):

Plain radiographs are required for evaluation of suspected osseous lesions; when radiographs are indeterminate, MRI with contrast is preferred to characterize marrow and soft-tissue extension.

CT is useful for lesion matrix characterization and cortical detail when MRI is contraindicated or when CT will affect surgical approach.

Consider systemic evaluation and laboratory correlation (e.g., tumor markers, metabolic panels) where clinically indicated; Paget disease and known metabolic bone disease have specialized imaging pathways.

Cysts (MS-10.3)

Cyst imaging rules (ALL):

Benign-appearing simple cysts that are asymptomatic generally do not require advanced imaging.

Preoperative planning for symptomatic or surgically treated cysts may warrant MRI or CT to define extent; document how imaging will change operative approach.

Avoid advanced imaging solely to characterize simple, stable cysts without clinical correlation.

Percutaneous Procedure Imaging Guidance Codes

Percutaneous procedure imaging guidance codes: use and documentation requirements (ALL):

When imaging guidance is used for percutaneous procedures (biopsy, aspiration, injection, ablation), select the CPT guidance code that precisely describes the modality, imaging method, and confirmatory steps performed.

Documentation must include: (1) the anatomic target and laterality; (2) the imaging modality and real-time guidance used; (3) needle trajectory, number of passes, and any imaging-confirmed adjustments; (4) whether additional imaging (e.g., specimen radiograph) was performed.

Do not report guidance codes separately when the guidance is inherent to and bundled with another procedure per CPT definitions; if billed separately, provide clear documentation of distinct additional work that meets CPT requirements for separate billing.

When ultrasound is used for both diagnostic evaluation and procedural guidance during the same encounter, separate billing for diagnostic ultrasound and guidance may be allowed only when distinct, separately reportable components are documented (diagnostic exam findings recorded and separate guidance imaging time and actions documented).

Use appropriate modifiers (e.g., -59, -XE, -XS) only when documentation supports distinct procedural services and payer modifier policy; misuse of modifiers to unbundle guidance codes risks denial.

For image-guided musculoskeletal injections, arthrocentesis, or biopsies, include pre-procedure planning, time spent guiding needle placement, confirmation images, and post-procedural imaging (if any) in the report to support billing.

Plain radiographs (x‑rays) of the symptomatic region are required prior to most advanced musculoskeletal imaging (CT, MRI, US, NM) unless specifically excepted in condition sections (e.g., some acute trauma or where x‑ray is non-diagnostic due to soft-tissue concern). Ensure x‑ray images and reports from the current episode are included with the request.

Required for spine and musculoskeletal guideline sections unless exception documented
If x‑ray is unavailable, document reason and any alternative imaging used

Documentation Required

Conservative care documentation

Document a trial of conservative care for indications that require it prior to advanced imaging: conservative measures, duration, frequency, and objective response. Examples include physical therapy, activity modification, analgesics, immobilization, or intra-articular injections when applicable. For certain conditions (e.g., acute compartment syndrome, suspected septic joint, severe neurologic deficit) exceptions apply and should be documented.

Specify start and end dates of conservative therapy and measurable outcome (improvement, no change, worsening)
If conservative care not appropriate, document clinical justification or exception

Billing Rule

Guidance code unit reporting

Follow CPT guidance for code selection and unit reporting. Report each guidance/procedure pairing using the appropriate, modality-specific CPT codes and report units per CPT definitions — do not report multiple units for single-session unilateral procedures unless CPT permits. Avoid pairing guidance codes with unrelated procedure codes that are considered inclusive.

Use modality-specific CPT codes for procedures (e.g., ultrasound guidance vs CT guidance)
Do not report guidance codes as both primary and add-on when guidance is inherent to the procedure
Report units per CPT — e.g., multiple needle placements may alter unit reporting only when CPT describes separate services

Prior Authorization

3D rendering billing exclusions

3D rendering (CPT 76376, 76377) and advanced post-processing may be excluded or require prior authorization depending on plan and service context. These services are billed separately only when they meet CPT definitions and are not included in primary imaging/volume-rendered reconstructions provided as part of CT/MR interpretation. Pre-authorization may be required for 3D rendering and associated procedures.

CPT 76376 — 3D rendering with interpretation and reporting (single study)
CPT 76377 — 3D rendering each additional or separate study (if applicable)
Prior authorization may be required for 3D rendering and some procedures

Documentation Required

Unlisted code usage

Use unlisted procedure codes only when no specific CPT code accurately describes the service provided. Include comprehensive documentation to justify medical necessity, detailed operative or procedural report, time, technique, and why existing CPT codes are not appropriate. Anticipate increased documentation requests and potential prior authorization.

When using unlisted CPT, attach full procedure note and rationale
Provide crosswalk to closest CPT codes if possible to aid review

Billing Rule

SPECT vs planar selection

When selecting nuclear medicine for bone/joint evaluation, choose SPECT (single photon emission computed tomography) over planar imaging when the clinical question requires 3‑D localization or increased sensitivity (e.g., focal pain localization, prosthetic loosening). Conversely, planar imaging may suffice for diffuse metabolic bone disease. Document the clinical rationale for SPECT vs planar selection.

Report appropriate SPECT CPT codes when 3‑D information is needed and document justification
Planar bone scan codes should be used for diffuse disease evaluation where adequate

Billing Rule

Secondary interpretation billing

Secondary (remote) interpretation of outside imaging may be billed separately only when the service meets CPT criteria for a distinct professional interpretation not included with the original study. Include documentation that the outside report did not suffice and that a formal reinterpretation was performed.

Document time spent and elements of reinterpretation
Include why original report was inadequate or unavailable

Prior Authorization

Pre-authorization documentation requirements

Pre-authorization documentation requirements: when prior authorization is required, submit complete clinical records including history, exam, prior conservative care, prior imaging (including required x‑rays), laboratory data when relevant, and procedural notes for follow-up or repeat studies. Incomplete submissions may delay or result in denial.

Include prior imaging and reports (x‑rays mandatory for musculoskeletal unless exception)
Provide details of conservative care and exceptions if applicable

Prior Authorization

Joint replacement customized planning

Joint replacement customized planning and surgical templating (including 3D printed models) require clear documentation of how the planning materially changes operative approach. Billing must use modality- and service-specific CPT codes; 3D printing-related services may require prior authorization and are subject to exclusion if considered part of global surgical planning.

Document surgeon request and how planning alters procedure
Bill 3D rendering codes only when separate from routine pre-op imaging and when CPT criteria are met

Documentation Required

Joint aspiration for suspected periprosthetic infection

For suspected periprosthetic joint infection, joint aspiration and synovial analysis are expected as part of the evaluation prior to advanced imaging unless contraindicated. Imaging without aspiration should be justified with clinical rationale and documented.

Document aspiration results (cell count, differential, gram stain, culture) when available
If aspiration not performed, document why (e.g., dry tap, risk)

Billing Rule

Use modality-specific CPT codes

Use modality-specific CPT codes (e.g., ultrasound guidance CPTs, CT guidance CPTs, MR guidance where applicable) rather than generic or cross-modality codes. Avoid reporting guidance/procedure codes that are considered bundled by CPT conventions.

Select CPT codes that reflect the modality used for both guidance and procedural work
Avoid pairing guidance codes with procedures when guidance is included in the primary CPT

Documentation Required

Clinical exam exceptions (knee ligaments)

Clinical exam exceptions: for certain knee ligament injuries and other specific tears, advanced imaging may be appropriate without prolonged conservative care if objective clinical examination demonstrates instability or if physical exam tests are diagnostic. Document specific exam findings (e.g., positive Lachman, pivot shift) and mechanism of injury.

Document specific positive exam maneuvers and their timing relative to injury
If MRI contraindicated, document alternative imaging and clinical rationale

Documentation Required

Use of alternative imaging when MRI contraindicated

When MRI is contraindicated or unavailable, use appropriate alternative imaging modalities (CT, ultrasound, nuclear medicine) and document the clinical rationale for the alternative and its limitations. Choose modality-specific CPT codes and document why MRI could not be used.

Document contraindication (e.g., pacemaker, severe claustrophobia) and why alternative modality is chosen
Ensure alternative modality codes reflect the diagnostic question

Documentation Required

Advanced imaging for muscle belly strains/tears

Advanced imaging for muscle belly strains/tears should be reserved for cases where results will change management (e.g., large retracted tears, surgical planning) and after appropriate clinical evaluation and conservative care unless acute severe injury. Document exact anatomic location, clinical exam, and prior conservative measures.

For suspected isolated muscle belly strain, document focal weakness, palpable defect, or failure of conservative care
MRI is preferred for soft-tissue muscle/tendon evaluation when available

Documentation Required

Clinical exam documentation for certain tears

Clinical exam documentation is required for certain tendon/ligament tears (e.g., full-thickness rotator cuff, ACL) — include mechanism, exam maneuvers, instability tests, and functional limitation. This supports medical necessity for advanced imaging and potential surgical planning.

Include documented positive exam findings and functional deficit
Specify timeframe since injury and prior conservative treatments

Billing Rule

QCT repeat interval

QCT (quantitative CT for bone density) repeat interval: avoid repeating QCT within short intervals unless there is a compelling clinical reason; document prior QCT date and clinical justification for repeat testing. Follow established interval guidance for monitoring bone density.

Document prior QCT date when requesting repeat study
Provide rationale for change in clinical management that necessitates repeat

Denial Risk

Acute compartment syndrome imaging denial risk

Acute compartment syndrome: imaging is rarely appropriate and may be denied if used to screen for compartment syndrome. Clinical diagnosis and measurement of compartment pressures are primary. Imaging requests for suspected acute compartment syndrome should include strong clinical correlation and justification.

Document clinical signs (tense compartment, pain out of proportion, pain with passive stretch) and measured compartment pressures if obtained
Imaging used as adjunct only — justify why non-imaging diagnosis not feasible

Billing Rule

MRI preferred over nuclear medicine

MRI is generally preferred over nuclear medicine for soft-tissue and intra-articular pathologies (e.g., tendon, ligament, meniscal, cartilage injuries) when MRI is available and not contraindicated, due to superior anatomic resolution and specificity. Use nuclear medicine when physiologic/metabolic information is specifically required or when MRI is contraindicated.

Document why nuclear medicine is selected over MRI when MRI is feasible
Select modality-specific CPT codes for nuclear studies when indicated

Billing Rule

Appropriate pairing of guidance and procedure codes

Appropriate pairing of guidance and procedure codes: pair guidance CPT codes with the correct procedural CPT codes only when CPT allows separate reporting. Guidance included in the primary procedure should not be billed separately. Document the nature of guidance and why it is distinct and billable.

Confirm CPT descriptors to determine if guidance is included or billable separately
When guidance is billable, include documentation of extra work, time, and image documentation

Billing Rule

Guidance codes and unit reporting

Guidance codes and unit reporting: specific guidance and biopsy codes commonly used include CPT 77012, 77021, 76942, 77002, and 77003. Report units consistent with CPT definitions and include documentation of laterality, number of lesions/targets, and number of separate biopsy sites when claiming multiple units.

77012 — Fluoroscopic guidance for needle placement (example)
77021 — CT guidance for needle placement (example)
76942 — Ultrasonic guidance for needle placement (example)
77002/77003 — Guidance for aspiration/biopsy (example)
Report units per CPT and document number of separate lesion sites

11/06/2025policy_updateLatest

Annual evidence-based updates (summary notes: annual evidence-based updates applied to guideline).