CurrentUnitedHealthcarePolicy CSRAD020OH.E

UN-CSRAD020OH.E - Pediatric Neck Imaging Guidelinesopen_in_new

UnitedHealthcare Community Plan guideline governing pediatric neck imaging practices and appropriate use of imaging modalities for individuals age 18 and younger in Ohio; includes modality selection, documentation, coding and billing guidance, and 3D rendering/unlisted code rules.

Policy Summary

PayerUnitedHealthcare

PolicyUN-CSRAD020OH.E - Pediatric Neck Imaging Guidelinesopen_in_new

Policy CodePolicy CSRAD020OH.E

Change TypeRevised (annual and interim updates listed)

Effective DateFebruary 3, 2026

Next Review DateN/A

Key ActionProviders must submit pertinent clinical evaluation since onset or change in symptoms including detailed history, physical exam, lab studies, and prior imaging to establish medical necessity.

SourceLink

POLICY UPDATE CHANGES

Policy history entries: 02/01/2024 annual updates; 07/01/2024 interim updates; 05/01/2025 annual updates; 11/06/2025 annual updates

V1.0.2026Guideline Version

OhioGeographic Scope

Pediatric (<=18)Target Population

1Guidance unit rule

Whole-body CT screening

Coverage Summary

This UnitedHealthcare Community Plan coverage guideline (CSRAD020OH.E, V1.0.2026, effective February 3, 2026) defines evidence-based imaging and procedural guidance for pediatric neck conditions for individuals aged 18 years and younger and applies only in Ohio. The policy is current and undergoes annual review and updates; it integrates society practice parameters and peer-reviewed literature to direct appropriate use of modalities (US, CT, MRI, NM/PET), guidance procedures, 3D rendering, and unlisted procedure coding. Coverage stance is mixed — modality- and indication-specific recommendations and coding rules are specified throughout, with clinical evaluation, documentation, and state regulatory requirements informing medical necessity determinations.

Key thresholds and quick-reference

Lymphadenopathy duration> 4 weeks of treatment

Conservative therapy duration (painful acute lymphadenopathy)>= 4 weeks (including antibiotics if appropriate)

Fever threshold prompting ultrasound>= 100.4°F

Initial imaging for neck massesUltrasound Neck (CPT 76536) — medically necessary

If ultrasound inconclusive or for malignancy concernMRI Orbit/Face/Neck (70540 or 70543) or CT Neck with contrast (70491)

Unit-of-service rule for guidance codesOne unit per individual encounter/date of service

Repeat ultrasound timing after benign/stable thyroid nodule6-12 months (then every 1-2 years if stable)

Medical-Necessity and Modality Selection Rules

Application / General Use

Covered when ALL of the following are met:

This policy applies only to the state of Ohio; requests will be evaluated under Ohio Administrative Code 5160-1-01 when services are stated as unproven or have coverage/quantity limits.

Imaging is for individuals age ≤18 years to be managed under the Pediatric Neck Imaging Guidelines; individuals >18 years follow General Imaging Guidelines unless otherwise specified in a condition section.

Adequate clinical information must be submitted to establish medical necessity, including relevant history, physical exam findings, onset/change in symptoms, prior imaging, and pertinent laboratory studies.

Advanced imaging or other designated procedures should not be ordered prior to clinical evaluation by the treating physician or appropriate consultant, except for guideline-supported scheduled surveillance.

3D Rendering, Guidance Codes, Unlisted Codes — Operational & Billing Rules

3D Rendering Criteria (CPT 76376, 76377)

{

"operator":"any",

"children":[

Operational note: Preserve the 'any' operator — a single qualifying indication is sufficient for consideration of 3D rendering codes when documentation supports medical necessity.

]

}

Codes and Groups

3D Rendering CodesCPT

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

Guidance Procedure CodesCPT

19085	Biopsy, breast, 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

Unlisted Procedure CodesCPT

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

Other Mentioned CPT / Modality Codes (billing constraints and examples)mixed

70486	CT stereotactic localization diagnostic CT example (do not report with 77011 for same session)
C9791	MRI using Xenon Xe 129 (investigational per policy)

Common MRI codes (Orbit/Face/Neck)CPTCovered

70540	MRI Orbit, Face, Neck without contrast
70542	MRI Orbit, Face, Neck with contrast
70543	MRI Orbit, Face, Neck without and with contrast
70336	MRI Temporomandibular Joint (TMJ)
76498	Unlisted MRI procedure (for radiation planning or surgical software / WBMRI reporting when appropriate)

MRA NeckCPTCovered

70547	MRA Neck without contrast
70548	MRA Neck with contrast
70549	MRA Neck without and with contrast

CT Neck / Maxillofacial / CTACPTCovered

70486	CT Maxillofacial without contrast
70487	CT Maxillofacial with contrast
70488	CT Maxillofacial without and with contrast
70490	CT Neck without contrast
70491	CT Neck with contrast
70492	CT Neck without and with contrast
70498	CTA Neck
76497	Unlisted CT procedure (for radiation planning or surgical software)

PET codes (not typically used in pediatrics)CPT

78811	PET Imaging; limited area
78812	PET Imaging: skull base to mid-thigh
78813	PET Imaging: whole body
78814	PET with concurrently acquired CT; limited area
78815	PET with concurrently acquired CT; skull base to mid-thigh
78816	PET with concurrently acquired CT; whole body

Thyroid / Parathyroid Nuclear MedicineCPTCovered

78012	Thyroid Uptake, Single or Multiple Quantitative Measurement(s)
78013	Thyroid Imaging (Including Vascular Flow)
78014	Thyroid Imaging with Uptake(s)
78015	Thyroid Carcinoma Metastases Imaging Limited Area
78016	Thyroid Carcinoma Metastases Imaging with Additional Studies
78018	Thyroid Carcinoma Metastases Imaging Whole Body
78020	Thyroid Carcinoma Metastases Uptake (Add-on)
78070	Parathyroid Planar Imaging (Including Subtraction)
78071	Parathyroid Planar Imaging with Tomographic (SPECT)
78072	Parathyroid Planar Imaging with SPECT and CT (SPECT/CT) - effective 2013

Salivary gland nuclear imagingCPTCovered

78230	Salivary Gland Nuclear Imaging
78231	Salivary Gland Nuclear Imaging with Serial Imaging
78232	Salivary Gland Function Study

Other nuclear medicine / localizationCPTCovered

78800	Radiopharmaceutical Localization Imaging Limited area
78802	Radiopharmaceutical Localization Imaging Whole Body
78803	Radiopharmaceutical Localization Imaging SPECT

Ultrasound / VascularCPTCovered

76536	Ultrasound soft tissues of head and neck
93880	Duplex scan of extracranial arteries; complete bilateral study
93882	Duplex scan of extracranial arteries; unilateral or limited study
93875	Non-invasive physiologic studies of extracranial arteries, complete bilateral study
76942	Ultrasound guidance for needle placement

Guidance / biopsy / interpretation / limited CTCPTCovered

76140	Interpretation of an Outside Study
76380	Limited or Follow-up CT
77013	CT guidance (only for non-bone ablation procedures)
77014	CT Guidance for Placement of Radiation Therapy Fields
20982	CT guidance for bone tumor ablations (included in 20982 guidance note)

SPECT/CT reporting codesCPTCovered

78830	Hybrid Nuclear/CT scan single area single day
78831	Hybrid Nuclear/CT scan 2 or more days
78832	Hybrid Nuclear/CT 2 areas one day and 2-day study
78072	SPECT/CT parathyroid nuclear imaging (effective 2013)

Ultrasound NeckCPTCovered

76536

Ultrasound, soft tissues of head and neck (eg, thyroid, parathyroid), real time with image documentation; limited or other than thyroid

Fine Needle Aspiration under Ultrasound GuidanceCPTCovered

76942

Ultrasound guidance for needle placement (eg, biopsy, aspiration), imaging supervision and interpretation

MRI Orbit/Face/NeckCPTCovered

70540	MRI Orbit, face, neck without contrast
70543	MRI Orbit, face, neck without and with contrast

CT NeckCPTCovered

70490	CT neck without contrast
70491	CT neck with contrast

CT Cervical SpineCPTCovered

72125

CT cervical spine without contrast

MRI Cervical Spine / BrainCPTCovered

72141	MRI cervical spine without contrast
70553	MRI brain without and with contrast

Thyroid Nuclear MedicineCPTCovered

78012	Thyroid uptake; single uptake
78013	Thyroid imaging; planar
78014	Thyroid uptake and imaging; quantitative

Esophageal / Motility / Chest CT / CTA / MRACPTCovered

78258	Esophageal motility study
71250	CT chest without contrast
71260	CT chest with contrast
71275	CTA chest
71555	MRA chest

3D Rendering for Preoperative PlanningCPTCovered

76376	3D rendering with interpretation and reporting; based on CT, MRI, ultrasound, or other tomographic modality
76377	3D rendering with interpretation and reporting; based on tomographic modality, more complex

Background, Evidence, and Definitions

Background: These evidence-based UnitedHealthcare clinical guidelines evaluate advanced imaging modalities (nuclear medicine, ultrasound, CT, MRI, PET), image-guidance procedures, 3D rendering, and unlisted procedure use for pediatric neck conditions with emphasis on appropriate use, patient safety, and imaging selection. The guidelines are developed from major society practice parameters and peer-reviewed literature, undergo a formal annual review, and are updated as needed (annual and interim updates documented in policy history). They are intended to inform medical necessity determinations, coding/billing rules, and clinical sequencing of imaging for pediatric neck indications.

Evidence	Summary
References	Multiple peer-reviewed sources and professional society practice parameters (ACR, FDA communications) cited; guideline references and bibliography available within the guideline.
Ultrasound advantage	Allows serial evaluation without sedation or radiation; useful as initial imaging to differentiate adenopathy from mass/cyst and to guide further modality selection.
CT vs MRI tradeoff	CT is faster and more widely available but uses ionizing radiation; MRI avoids radiation and provides superior soft-tissue definition but is longer and may require sedation in children.

Definitions (operational):

• Concurrent supervision (3D rendering): active physician participation and monitoring of the 3D image post-processing and reconstruction (design of anatomic region, selection of tissues/structures to display, images to archive, and monitoring/adjustment of the 3D product); required for CPT 76376/76377.

• Unit of service (guidance codes): the individual encounter (date of service); only one unit of certain guidance codes may be billed per encounter regardless of number of lesions or procedures.

• Unlisted procedure codes: CPT 76497, 76498, and 78999 used when no anatomic site–specific CT/MR/nuclear CPT code exists; a Category III code must be used instead if one is available.

• Conservative therapy: observation and medical management (including antibiotics when appropriate) for at least 4 weeks for painful acute lymphadenopathy prior to advanced imaging unless clinical course dictates earlier imaging.

• High-risk mechanism: mechanisms predisposing to cervical spine injury (e.g., head/maxillofacial trauma, pedestrian vs vehicle, falls from above standing height, diving accidents, head-on/rollover/ejection/high-speed motor vehicle collisions, lack of seatbelt use) and conditions such as ankylosing spondylitis that increase fracture risk.

Revision History

02/01/2024revised

Policy history lists annual and interim evidence-based updates with last update 11/06/2025; Summary of Changes entries: 02/01/2024 annual updates; 07/01/2024 interim updates; 05/01/2025 annual updates; 11/06/2025 annual updates (detail: Summary of Changes entries: 02/01/2024 annual updates; 07/01/2024 interim updates; 05/01/2025 annual updates; 11/06/2025 annual updates)

07/01/2024revised

05/01/2025revised

Policy Summary

PayerUnitedHealthcare

PolicyUN-CSRAD020OH.E - Pediatric Neck Imaging Guidelinesopen_in_new

Policy CodePolicy CSRAD020OH.E

Change TypeRevised (annual and interim updates listed)

Effective DateFebruary 3, 2026

Next Review DateN/A

SourceLink

On This Page

When a guideline-supported scheduled follow-up imaging is requested, a recent clinical evaluation may be unnecessary as described in the applicable condition-specific sections.

Imaging Modality Selection

Use the following modality selection rules when determining the appropriate imaging study:

Operator: all; Children should preferentially receive the least invasive and lowest risk modality that answers the clinical question.

Ultrasound is the preferred first-line imaging modality for most pediatric superficial neck masses, suspected lymphadenopathy, salivary gland evaluation, and thyroid nodules when technically feasible and when ultrasound will answer the clinical question.

When ultrasound is non-diagnostic, indeterminate, or cannot assess deeper structures, proceed to cross-sectional imaging (MRI preferred when feasible to avoid ionizing radiation).

CT is acceptable when rapid imaging is required, when MRI is contraindicated or not available, or when evaluation of osseous or calcified structures or acute airway compromise or suspected foreign body/acute hemorrhage is needed.

CT contrast use: use intravenous contrast when contrast enhancement is required to answer the clinical question (e.g., suspected abscess, vascular malformation, tumor characterization). Non-contrast CT may be appropriate for specific indications (e.g., calcified lesion, bony detail) as noted in condition-specific sections.

MRI preference: MRI with and without contrast is preferred for detailed soft-tissue characterization, deep neck space infection staging (when clinically stable), tumor staging and preoperative planning, cranial nerve or skull base involvement, or when superior soft-tissue resolution is required.

Contraindications to MRI (e.g., non-MR-safe implanted devices, unstable individuals) justify CT use.

PET/CT or PET/MRI: reserve for specific oncologic indications per condition-specific guidance (staging, treatment response, or when metabolic information is clinically necessary). Whole-body PET/CT should follow the Whole-Body Imaging rules and is not routine for isolated neck pathology.

When performing interventional or image-guided procedures, select modality that optimizes safety and efficacy (US or CT guidance as appropriate).

If a non-contrast study is performed and an unexpected abnormality is encountered that requires contrast for evaluation, intraprocedural use of contrast is appropriate.

Overutilization and Documentation Requirements

To avoid overutilization and ensure imaging will impact care, the following must be met:

Operator: all; Imaging is medically necessary only when the result will reasonably be expected to change clinical management (diagnosis, treatment, or procedural planning).

Routine or repeat imaging without change in clinical status, or imaging performed solely for data collection in research or clinical trials without direct impact on management, is not supported.

Pre-operative imaging: preoperative studies are covered when they’ll directly inform surgical planning and when prior, less advanced imaging (e.g., ultrasound) has failed to answer the surgical question or when the clinical scenario requires cross-sectional or vascular assessment.

Documentation requirements: submit recent clinical evaluation notes, relevant labs, prior imaging reports (with dates), description of symptoms/onset/change, prior conservative therapy and response (including duration), and the specific clinical question the requested imaging will answer.

Requests lacking adequate clinical information or missing prior imaging that the guideline requires may be denied or returned for additional information.

General criteria for advanced imaging of the pediatric neck

General prerequisites and rules for advanced (CT/MR/PET) pediatric neck imaging:

Operator: all; Advanced imaging should be performed only after appropriate initial evaluation and when results will influence management.

Initial evaluation for most neck masses and lymphadenopathy should begin with ultrasound unless otherwise contraindicated or unlikely to be diagnostic.

Repeat advanced imaging within short intervals requires documentation of clinical change or specific indication (e.g., post-treatment assessment, acute clinical deterioration); routine short-interval repeat imaging without new findings is not supported.

For congenital cysts, ranulas, or known benign-appearing lesions on ultrasound, cross-sectional imaging is reserved for lesions that are large, deep, symptomatic, rapidly growing, compressing adjacent structures, or when surgical planning requires further anatomic detail.

For suspected infection (abscess/deep neck space infection), imaging modality selection depends on clinical stability and need for airway/vascular assessment; CT or MRI with contrast may be indicated.

Initial imaging for pediatric neck masses

Initial imaging approach for pediatric neck masses:

Operator: all; Ultrasound is the first-line modality for initial evaluation of pediatric neck masses to distinguish cystic vs solid lesions and to assess vascularity and lymph nodes.

If ultrasound findings are indeterminate or show deep extension, bone/skull base involvement, or suggest malignancy, proceed to MRI with and without contrast (preferred) for further characterization and staging.

CT with contrast may be used when MRI is contraindicated, unavailable, when rapid assessment is required, or when evaluation of bony detail or acute airway compromise is necessary.

Specific scenarios: ranula or suspected congenital cystic lesions — ultrasound first; cross-sectional imaging (MRI preferred, CT if indicated) if lesion is large, deep, or preoperative planning required.

Lymphadenopathy: unilateral, persistent (>6 weeks), enlarging, painful, or associated with systemic symptoms (fever, weight loss, night sweats) requires further evaluation beyond ultrasound per condition-specific criteria.

Persistent/Painful Lymphadenopathy (PEDNECK-3.1)

Persistent or painful lymphadenopathy and related neck mass rules (PEDNECK-3.1):

Operator: all; For initial presentation, perform ultrasound to assess node morphology, size, and vascularity.

Criteria for cross-sectional imaging (MRI preferred) or CT: persistent lymphadenopathy >6 weeks despite appropriate conservative therapy, rapidly enlarging nodes, nodes >2.5 cm (or per condition-specific thresholds), focal suppuration/abscess on ultrasound, systemic 'B' symptoms, or suspicion for malignancy.

For suspected bacterial lymphadenitis with abscess formation, CT or MRI with contrast may be used for surgical planning when ultrasound is insufficient.

If biopsy is planned, cross-sectional imaging may be required for guidance and staging.

Dystonia/Torticollis (PEDNECK-4.1)

Dystonia / torticollis imaging rules (PEDNECK-4.1):

Operator: all; For acute torticollis without red flags, initial evaluation often includes clinical assessment and targeted radiographs when indicated.

Ultrasound may be useful if a palpable mass is suspected as the cause. MRI of the neck (and cervical spine when indicated) with and without contrast is preferred for persistent, progressive, or neurologic-sign-associated torticollis to evaluate soft tissues, nerve roots, and spinal cord.

CT is reserved for acute trauma, suspected osseous abnormality, or when MRI is contraindicated.

Dysphagia (PEDNECK-5.1)

Dysphagia imaging rules (PEDNECK-5.1):

Operator: all; Initial evaluation depends on clinical presentation: oropharyngeal vs esophageal dysphagia and suspicion for structural, functional, or neuromuscular causes.

Barium swallow or fluoroscopic swallowing study is appropriate initial testing for oropharyngeal dysphagia or suspected aspiration.

For suspected structural lesions, masses, or external compression, ultrasound (for superficial lesions) and MRI (preferred for soft tissue/extent) or CT (if MRI contraindicated or rapid assessment needed) may be used.

Endoscopic evaluation may be required and imaging should be coordinated with endoscopy results for surgical or therapeutic planning.

Thyroid/Parathyroid and Salivary gland / parotid mass preoperative evaluation

Thyroid and parathyroid imaging rules (PEDNECK-6.x & 6.4):

Operator: all; Thyroid nodules and masses: ultrasound is the first-line imaging modality for evaluation, characterization, and to guide fine-needle aspiration (FNA) when indicated.

Criteria for cross-sectional imaging (CT or MRI): concern for substernal extension, invasive disease, retrosternal goiter causing compression, tracheal deviation/narrowing requiring surgical planning, or when ultrasound is non-diagnostic for deep/retropharyngeal extension.

For hyperthyroidism and Graves’ disease, thyroid scintigraphy (radionuclide imaging) may be used when clinical and laboratory evaluation indicate its utility; correlate with endocrinology recommendations.

Parathyroid imaging (PEDNECK-6.4): localizing studies (e.g., ultrasound, 99mTc-sestamibi SPECT/CT) are appropriate when biochemical evidence of primary hyperparathyroidism exists and localization will change operative management. Cross-sectional imaging with contrast may be used for ectopic glands or prior failed localization.

Preoperative salivary gland/parotid mass evaluation: begin with ultrasound; if malignancy suspected, MRI with contrast is preferred for local extent and perineural spread assessment. CT with contrast may be used if MRI contraindicated or to evaluate osseous involvement.

Trachea (PEDNECK-8.1)

Tracheal imaging rules (PEDNECK-8.1):

Operator: all; For suspected tracheal compression, stenosis, or dynamic airway collapse, cross-sectional imaging with contrast (CT or MRI) and dynamic imaging protocols may be required.

CT (including inspiratory/expiratory or cine techniques) is often used for rapid assessment of airway caliber and osseous/cartilaginous abnormalities; MRI may be used when soft-tissue detail without radiation is preferred and when patient cooperation allows.

For preoperative airway planning or acute airway compromise, choose the modality that provides timely, actionable information.

Coding and Modality-Specific Considerations (3D rendering, guidance codes, unlisted codes, whole-body)

Coding, guidance, and procedure-specific rules:

3D rendering (CPT 76376, 76377): 3D surface rendering, volume rendering, or other post-processing billed with CPT 76376/76377 is appropriate only when it is required for surgical planning or when reconstruction materially changes management; documentation must state how the rendering affected clinical decision-making.

CT/MR/Ultrasound guidance codes and imaging-guided procedure documentation (e.g., CPT 75989, 76942, 77011-77013, 77021-77022): guidance codes are reportable when an image-guided localization, needle placement, or intervention is performed; document the guidance modality used, target, and that the guidance directly facilitated the procedure.

Unlisted CT/MR/Nuclear codes (CPT 76497, 76498, 78999): use of unlisted or limited-procedure codes requires submission of complete documentation including rationale for unlisted coding, detailed description of procedures performed, the time involved, and comparable CPT codes for pricing; lack of adequate documentation may result in denial or downcoding.

Unlisted and limited CT/MR procedure coding rules: limited or regional CT/MR protocols should be coded to the most appropriate CPT that reflects procedure complexity and body region imaged; do not routinely fragment studies to avoid appropriate full-study codes.

Whole-body imaging: whole-body CT/MR/PET studies are rarely indicated for isolated pediatric neck pathology and should be justified by oncologic staging or systemic disease concerns; follow whole-body imaging rules in Preface sections and condition-specific guidance.

Modality-specific considerations: when using contrast agents in pediatric patients, follow weight-based dosing and institutional safety protocols; when sedation or anesthesia is required for MRI in children, document need and prior attempts at non-sedated imaging.

CT/MR/Ultrasound Guidance Codes — Billing Constraints

ALL of the following

Imaging guidance codes are limited to one unit per encounter for a single guidance event (regardless of the number of needle passes) — report only one unit of the appropriate guidance CPT for the encounter (e.g., 77012, 77021, 76942, 77002, 77003, 77013, 77022).
One unit = single encounter guidance event.
Do not report image guidance CPT codes in conjunction with open surgical procedures when guidance is integral to the open procedure or when the guidance is performed for the same operative episode and is not separately identifiable as a distinct, reportable imaging service.
Billing exclusion
When stereotactic localization is required for cranial procedures, choose the appropriate stereotactic guidance code: CPT 77011 applies for stereotactic localization when billed as the guidance component; contrast CPT 70486 (CT guidance for stereotactic procedures) is modality-specific — ensure correct code selection based on imaging modality and service performed.
CPT 77011 vs 70486 usage

Unlisted CT/MR/Nuclear Codes — When Appropriate

ANY of the following

Unlisted CT/MR/Nuclear codes (e.g., CPT 76497, 76498, or reportable unlisted CPTs such as 78999) should be used only when no specific CPT code adequately describes the service provided and when detailed documentation and justification are submitted with the claim.
Submit operative/technique details and rationale; prior authorization may be required.
When a Category III code exists for the performed advanced or experimental imaging procedure, report the Category III code rather than an unlisted code. If only an unlisted code is available, include complete technical and clinical documentation and, if applicable, prior authorization documentation.
Category III requirement
For PET/MRI procedures when no precise CPT descriptor exists and facility/provider billing requires unlisted codes, report PET/MRI as CPT 78813 (PET imaging) in conjunction with CPT 76498 when criteria and documentation support combined PET/MRI acquisition and interpretation per payer guidance.
PET/MRI reporting note

Prior Authorization

Prior authorization may be required for 3D rendering and select advanced imaging

Prior authorization may be required for 3D rendering and select advanced imaging. Prior authorization requirements apply to advanced rendering (CPT 76376, 76377), select unlisted advanced imaging codes (CPT 76497, 76498, 78999), and certain hybrid/combined modalities (e.g., PET/MRI). Providers must follow payer prior authorization procedures and submit the required clinical documentation to support medical necessity.

Affected codes: 76376, 76377, 76497, 76498, 78999, 78813, 70543, 70540, 70491, 76536
Provider action: Obtain prior authorization when required by the plan; include detailed clinical indication and documentation showing how 3D rendering or unlisted/advanced imaging will alter management.

Billing Rule

Guidance codes — single unit per encounter

Guidance codes — single unit per encounter. Image guidance codes represent a single guidance event and should be billed as one unit for the encounter regardless of the number of needle passes or attempts. Duplicate units for the same encounter are inappropriate and may be denied.

One-unit guidance codes include but are not limited to: 77012, 77021, 76942, 77002, 77003, 77013, 77022
Provider action: Report only one unit per encounter for imaging guidance services; document the guidance event in the medical record.

Billing Rule

3D rendering billing exclusions

3D rendering billing exclusions. Do not report CPT 76376 or 76377 in conjunction with studies/modalities where 3D rendering is considered integral, redundant, or specifically excluded. Billing 3D rendering in these contexts may result in denial.

Do not bill 76376/76377 with CAD reconstructions that are part of the primary CTA/CT/MR study, MR angiography (MRA), CT angiography (CTA), or with nuclear studies (SPECT, PET) where 3D rendering is integrated into the performed exam.
Do not bill 76376/76377 with stereotactic localization codes when those services are captured by 77011 or modality-specific guidance codes such as 70486.
Do not bill 3D rendering for dedicated breast studies or cardiac CT/MRI where rendering is considered part of the diagnostic interpretation and not separately reportable.

Billing Rule

Do not unbundle PET/CT

Do not unbundle PET/CT. Report combined PET/CT studies using the appropriate combined PET/CT code(s) rather than separating into individual PET and diagnostic CT codes unless payer policy explicitly allows separate reporting with full supporting documentation.

Provider action: When PET/CT is performed as a combined study, report the appropriate combined codes and do not unbundle into separate PET + diagnostic CT components.
If PET/MRI is performed and meets payer criteria for combined reporting, follow the PET/MRI reporting guidance (see unlisted/CPT guidance above).

Documentation Required

Clinical evaluation and documentation required

Clinical evaluation and documentation required. Before ordering advanced imaging (including 3D rendering or unlisted/advanced procedures), providers must perform and document a pertinent clinical evaluation.

Submit a detailed history, physical examination findings, relevant laboratory studies, and prior imaging reports with the request.
Document that conservative therapy has been attempted for at least 4 weeks for cervical lymphadenopathy when required by the condition-specific guidance.
When fever is used as an indication for imaging, document measured fever ≥ 100.4°F (38.0°C) and correlate with other clinical findings.
If contrast is omitted for MRI due to contraindication (e.g., severe allergy or other clinical reason), document the contraindication; document sedation coordination and monitoring plans when applicable.
Advanced imaging after ultrasound: when ultrasound is used as the initial modality and is inconclusive or inadequate to answer the clinical question, document ultrasound findings that justify escalation to CT or MRI.
Thyroid nodule follow-up intervals: document prior imaging dates and nodule characteristics to justify interval follow-up per guideline recommendations.

Billing Rule

Unlisted procedure reporting

Unlisted procedure reporting. Use unlisted CPT codes (e.g., 76497, 76498, 78999) only when no specific CPT accurately describes the performed procedure. Provide comprehensive documentation and consider Category III codes if applicable.

When reporting unlisted codes, include a complete description of the technique, indication, images acquired, reconstruction methods, and rationale for why existing codes do not apply.
If a Category III code exists for the performed service, report the Category III code instead of an unlisted CPT when appropriate.
PET/MRI reporting: when PET/MRI meets payer criteria for combined acquisition and interpretation and no single Category I code exists, CPT 78813 may be reported in conjunction with CPT 76498 with full supporting documentation and prior authorization if required.

11/06/2025revisedLatest