Medical necessity review per Ohio rule

Requests for services labeled unproven or with coverage/quantity limits will be evaluated for medical necessity under Ohio Administrative Code 5160-1-01; providers should expect these requests to undergo medical necessity review per Ohio rule.

Prior authorization guidance

Inclusion of a CPT in these guidelines does not by itself indicate the code requires prior authorization; follow the payer's prior authorization processes and plan-specific rules to determine authorization requirements.

Prior authorization for 3D/3D segmentation

Prior authorization may be required for 3D rendering codes (CPT 76376, 76377) and for HCPCS C8001 (3D anatomical segmentation) even when the underlying base imaging is not preauthorized; document physician supervision/participation per ACR recommendations.

• Document active physician participation/monitoring of the 3D reconstruction to support concurrent supervision billing.

Whole-body imaging prior authorization

Whole‑body CT screening for asymptomatic individuals is not a covered benefit and WBMRI is generally not medically necessary except for select cancer predisposition syndromes or specific autoimmune conditions; WBMRI should be reported using CPT 76498 when authorized.

• Do not request whole‑body CT (LifeScan) for asymptomatic screening — it will not be covered.
• If requesting WBMRI, report using CPT 76498 and provide condition‑specific justification for coverage.

Coding and authorization for WBMRI and PET/MRI

PET/MRI may be authorized when the individual meets condition‑specific PET/MRI criteria, or if the individual meets PET/CT criteria and PET/CT is unavailable and the provider requests PET/MRI; when authorized report as CPT 78813 + 76498.

• Provide documentation that PET/CT criteria are met and that PET/CT is not available when requesting PET/MRI in lieu of PET/CT.
• Use CPT 78813 + 76498 to report PET/MRI when criteria are met.

Pre-authorization / Documentation for Simultaneous Studies

When simultaneous spinal MRI and CT are requested (e.g., for preoperative planning or complex failed fusion evaluation), submit documentation that both soft‑tissue and bony anatomy determination is required; prior authorization and justification may be requested.

• Include clinical rationale for why both modalities are necessary for the same episode of care.

Post-discography CT authorization

Authorization for post‑lumbar discography CT will be issued only when discography has already been approved and the CT is verified to be performed as a post‑discography CT coded without contrast (CPT 72131).

• Provide evidence of approved discography and verify the CT is post‑discography and coded as CPT 72131 (without contrast).

CT/myelography procedure code authorization

Approval for CT/myelography–related studies is limited to the listed post‑myelogram CT procedure codes (CPT 72126, 72129, 72132); requests for other myelogram‑related procedure codes (e.g., CPT 72265, 62284) are not approved.

• When requesting post‑myelogram CT, submit the specific CPT among 72126, 72129, or 72132 as applicable.

Spinal canal ultrasound reporting and intraoperative use

Intraoperative spinal ultrasound guidance should be reported with CPT 76998 and does not require prior authorization; CPT 76800 (spinal canal ultrasound) describes diagnostic evaluation (often pediatric) and should not be reported multiple times for different spinal regions.

• Use CPT 76998 for intraoperative ultrasonic guidance — no prior authorization required.
• For diagnostic spinal canal ultrasound (CPT 76800), ensure indication supports pediatric/newborn/infant use or other described indications.

Prior authorization requirements for advanced spine imaging

Prior authorization for advanced spine imaging is contingent on documentation of required pre‑imaging steps: an in‑person clinical evaluation for the current episode, failure of a 6‑week trial of provider‑directed treatment when applicable (unless a red flag/high‑risk), clinical re‑evaluation, and plain x‑rays available when required.

• Ensure the record includes initial in‑person evaluation or re‑evaluation, conservative therapy details (dates, modalities), and re‑evaluation documentation.
• Attach plain radiograph results performed after the current episode start/change when the condition section requires them.

Prior authorization for advanced spine imaging (thoracic/lumbar)

Prior authorization is required for advanced imaging of the thoracic and lumbar spine; providers must confirm and document the required clinical evaluation, failed 6‑week conservative therapy when applicable (or a red‑flag/high‑risk exception), and post‑treatment re‑evaluation before approval.

• If MRI is contraindicated, document the contraindication when requesting CT or CT myelography alternatives.

Advanced spine imaging PA/criteria

Prior authorization/approval for advanced imaging (e.g., MRI lumbar CPT 72148, CT lumbar CPT 72131/72132, SPECT codes) will be granted only when guideline criteria are met — including required conservative treatment or specific red‑flag indications — or when documentation justifies immediate imaging.

• Include clinical notes showing failure of a 6‑week trial when required, or detailed documentation of any red‑flag indication.

Prior authorization expectations

Providers requesting advanced imaging should expect prior authorization and must document indications: failure of a 6‑week trial of provider‑directed conservative therapy (when required), red‑flag indications, severe functional impairment (e.g., neurogenic claudication), or surgical planning needs.

• For bone scan/SPECT/SPECT‑CT or CTA/MRA requests, include modality‑specific rationale and prior plain x‑rays when applicable.

Clinical indication documentation required for listed CPTs

When submitting authorization requests for the listed advanced spine CPTs, ensure clinical indication documentation is provided (detailed history, neurological exam findings, prior imaging, conservative care trial and re‑evaluation) to support medical necessity.

• Attach pertinent prior plain radiographs and specialist recommendations when required by the condition section.

Preoperative CTA/MRA for revision anterior spinal surgery

If requested by the operating surgeon for revision anterior thoracic or lumbar spinal surgery, CTA pelvis (CPT 72191), CTA abdomen (CPT 74175), CTA abdomen and pelvis (CPT 74174), MRA pelvis (CPT 72198) and/or MRA abdomen (CPT 74185) may be authorized for preoperative planning; a documented surgeon request must be included.

• Include a surgeon's documented request to support authorization for CTA/MRA for revision anterior surgery.

Evaluation before imaging

Providers must perform a clinical evaluation prior to ordering advanced imaging; some condition sections explicitly require a face‑to‑face (in‑person) evaluation for the current episode of symptoms.

• Other meaningful contacts (telehealth, phone, portal message) may suffice for re‑evaluation but initial advanced imaging often requires in‑person evaluation per condition rules.

Use of CPT 76380

Use CPT 76380 only for limited or follow‑up CT studies when the work of a full diagnostic CT is not performed; CPT 76380 is not appropriate for treatment planning and should not be used to report extra slices added to a diagnostic CT.

• Provide clinical justification when selecting CPT 76380 and avoid combining it to cover additional slices of a full diagnostic CT.

Clinical re-evaluation after conservative therapy

Clinical re‑evaluation after a six‑week trial of provider‑directed conservative treatment is required prior to consideration of most advanced spine imaging unless a red‑flag or high‑risk condition applies.

• Document the conservative therapies tried, dates, and objective response during re‑evaluation.

Conservative treatment requirement for severe radicular pain

For severe radicular pain, providers must document a minimum seven (7)‑day trial of provider‑directed treatment (unless other specified severe features, urgent spine intervention, or spine specialist referral is planned), plus VAS ≥9/10 and significant functional loss, to meet imaging criteria.

• Include VAS score, functional impact, treatments provided, and treatment dates in the request.

Preferred modality sequencing

MRI is the preferred initial advanced imaging modality for spinal cord and soft‑tissue pathology; if MRI is contraindicated or equivocal, document the contraindication when requesting CT or CT myelography as an alternative.

• When substituting CT for MRI, match contrast level appropriately and include contraindication details.

Conservative treatment requirement (cervical/thoracic)

A 6‑week trial of provider‑directed conservative treatment is required prior to advanced imaging for non–high‑risk cervical and thoracic spine pain; document the treatments attempted and a clinical re‑evaluation after the trial.

• Exceptions apply for red‑flag presentations and high‑risk individuals (e.g., recent significant trauma, age >60, high‑energy mechanism).

Conservative treatment requirement (thoracic/lumbar)

A 6‑week trial of provider‑directed conservative treatment followed by clinical re‑evaluation is required prior to advanced imaging for most indications; document the trial, re‑evaluation (in‑person or other meaningful contact), and why imaging is now necessary.

• If the patient is high‑risk or has a red‑flag, document the specific exemption to bypass the 6‑week requirement.

Conservative therapy requirement

For typical low back/radicular presentations, a conservative therapy step (6‑week trial) followed by re‑evaluation is required before advanced imaging; document therapies, durations, and re‑evaluation findings.

Conservative treatment before imaging (spondylolisthesis/lumbar stenosis)

A 6‑week trial of provider‑directed conservative treatment is required before advanced imaging for spondylolisthesis and many lumbar spinal stenosis cases unless red‑flag indications or severe neurogenic claudication are present; document trial failure and re‑evaluation.

Conservative therapy prerequisite (lumbar)

A trial of conservative (provider‑directed) therapy for 6 weeks is required prior to approval of most advanced lumbar spine imaging (MRI/CT) unless red flags or other specified exceptions apply; include documentation of therapies and outcome.

Conservative therapy requirement before advanced imaging (>6 months post-op)

For individuals >6 months post‑operative, advanced imaging (MRI or CT) is medically necessary only after plain x‑rays of the affected surgical region and failure of a 6‑week trial of provider‑directed treatment following symptom onset/change, unless red‑flag indications exist.

• Provide post‑operative plain x‑ray results performed after the current episode started or changed when submitting a request.

Documentation expectations

Providers should document clinical indications and reasoning consistent with evidence‑based guidelines; clinician judgment may override guideline rules but must be supported by the individual's clinical circumstances and documented in the record.

• Include detailed history, exam findings, prior imaging, labs, and rationale for deviation from standard criteria when applicable.

Required clinical documentation

Submit adequate clinical information with authorization requests: detailed history, physical exam including neurological findings, relevant labs, prior imaging (including plain x‑rays when required), and condition‑specific information to establish medical necessity.

• For pediatric requests (≤18 years) follow Pediatric Imaging Guidelines when applicable.

Documentation for 3D rendering supervision

When billing CPT 76376/76377 for 3D rendering, document the physician's supervision or participation in the 3D reconstruction process (design of anatomic region, structures displayed, images archived, monitoring) to support concurrent supervision and billing.

• Maintain documentation of the physician's specific actions during reconstruction per ACR recommendation.

Coding and documentation guidance for unlisted procedures

When using unlisted CT/MR procedure codes (e.g., 76497, 76498), report the appropriate unlisted code only when no anatomic site‑specific CPT exists and include clinical justification; do not use CPT 76380 to report additional slices of a diagnostic CT.

• Include a clinical description of the procedure and rationale for using an unlisted code.
• Use CPT 76140 for interpretation of outside studies when relevant.

Before advanced diagnostic (spine) imaging: evaluation and re-evaluation

Before advanced spine imaging, document an in‑person clinical evaluation for the current episode and a clinical re‑evaluation after a failed conservative therapy trial; re‑evaluation may be in‑person or another meaningful contact and must record history, exam (including neuro exam), and prior treatments.

• Ensure documentation of provider‑directed conservative therapies and objective findings at re‑evaluation.

Clinical Evaluation Requirement (in-person)

An in‑person clinical evaluation for the current episode is required and documentation must demonstrate the specified findings (e.g., motor weakness grade ≤3/5, VAS ≥9/10 for severe radicular pain, or failure of required days of provider‑directed treatment) when these criteria are cited as indications for immediate imaging.

• Include objective exam findings and severity scores as applicable to meet red‑flag or severe symptom criteria.

Required prior imaging and contraindication documentation

Results of plain x‑rays performed after the current episode of symptoms started or changed must be available to the requesting provider for many spine indications (e.g., cervical/thoracic non‑high‑risk trauma, post‑operative imaging, deformity evaluation); document and attach these x‑ray results when required.

• If MRI is contraindicated and CT is requested instead, document the MRI contraindication with rationale.

Post-discography CT documentation

When requesting post‑discography CT, verify the discography was previously approved and include documentation that the post‑discography CT will be performed as a CT without contrast (CPT 72131).

Documentation for additional lesion characterization and surgical planning

MRI without and with contrast or CT without contrast is medically necessary to further characterize spinal lesions seen on plain x‑ray or non‑contrast MRI when a spine specialist or radiologist recommends additional characterization or when needed for surgical planning; include specialist recommendation in documentation.

• Attach the specialist's recommendation or surgical planning notes to support the request.

Documentation requirements for spinal canal ultrasound (CPT 76800)

For spinal canal ultrasound (CPT 76800), provide documentation supporting pediatric/newborn/infant indication, incomplete ossification evaluation (e.g., tethered cord), suspected spinal dysraphism, spinal cord tumors/vascular malformations, or birth‑related trauma; intraoperative ultrasound should be reported with CPT 76998.

• CPT 76800 should not be used for routine adult spine pain, radiculopathy, or facet/nerve‑root inflammation indications.

Required plain x-rays prior to advanced imaging (cervical/thoracic)

Plain x‑ray results of the cervical or thoracic spine performed after the current episode of symptoms started or changed must be available to the requesting provider for non–high‑risk trauma prior to advanced imaging; include the images/results with the request.

• High‑risk mechanisms and AS/DISH exceptions do not require plain x‑rays prior to advanced imaging; document the high‑risk criteria or AS/DISH diagnosis.

Required clinical documentation for advanced imaging

Document an in‑person clinical evaluation for the current episode, documentation of a failed 6‑week trial of provider‑directed treatment (or presence of a red‑flag), and a clinical re‑evaluation after the treatment period (may be in‑person or other meaningful contact) when requesting most advanced spine imaging.

Required clinical documentation for lumbar imaging

Document in‑person clinical evaluation for the current episode, documentation of a 6‑week trial of provider‑directed treatment and clinical re‑evaluation after treatment when requesting lumbar advanced imaging; for high‑risk individuals or red flags document the specific exemption that permits bypassing the conservative treatment requirement.

• Include conservative therapy details, dates, and re‑evaluation findings in the request.

Plain x-ray availability

Ensure results of plain radiographs performed after the current episode of symptoms started or changed are available to the requesting provider and included with requests where the condition section requires them.

Required clinical documentation (general spine)

When requesting advanced imaging, include prior plain x‑rays (when required), documentation of a 6‑week trial of provider‑directed treatment and clinical re‑evaluation, concordant location of spinal pain with x‑ray findings (for compression fractures), or documentation of red‑flag indications or surgical planning requests when applicable.

Radiograph results must be available for deformity imaging

Requesting provider should have available results of plain radiographs (e.g., Cobb radiographs) of the affected spinal regions when requesting MRI or CT for spinal deformity evaluation or pre‑operative planning; include these x‑ray results with the authorization request.

Prior plain radiography required before post‑operative advanced imaging

Plain x‑rays of the affected spinal regions must be performed with results available to the requesting provider prior to MRI/CT for post‑operative imaging requests (both >6 months and within‑6‑months pathways specify plain x‑rays as prerequisite).

Denial triggers: investigational, research, inconsistent with standards

Imaging requests that are inconsistent with established clinical standards, requested for data collection only, or for services stated as investigational/experimental will be evaluated under Ohio rules and may be denied.

• Clinical trial or research‑only imaging that will not be used in direct clinical management may be determined not medically necessary.

Denial triggers: research/data-collection and duplicative requests

Imaging requests inconsistent with established clinical standards, requested for data collection not used in direct clinical management, duplicate/unnecessary studies, or otherwise unsupported by the guideline may be denied as not medically necessary.

• Ensure requests are accompanied by documentation demonstrating how the imaging will affect clinical management to avoid denial.

Prior auth risk for 3D rendering

Providers may be required to obtain prior authorization for 3D rendering CPTs 76376 and 76377 even if prior authorization is not required for the underlying echocardiography or ultrasound codes; be prepared to submit documentation supporting clinical necessity.

Whole-body imaging exclusions

Whole‑body CT screening for asymptomatic individuals is not a covered benefit and will be denied; whole‑body MRI is generally not medically necessary except for select cancer predisposition syndromes and certain autoimmune conditions and may be denied outside those exceptions.

WBMRI / PET‑MRI denial risk

WBMRI and PET/MRI are generally not medically necessary for the majority of indications; PET/MRI may be allowed only when condition‑specific criteria are met or when PET/CT criteria are met and PET/CT is unavailable and PET/MRI is requested.

Contrast rules — renal impairment, pregnancy, allergies, recent inconclusive studies

Select contrast level based on clinical indication; avoid gadolinium and iodinated contrast in severe renal impairment (GFR <30 mL/min), consider pregnancy and allergies when choosing contrast, and document contraindications or prior inconclusive studies as appropriate.

• Document GFR when renal impairment is a concern (GFR <30 mL/min).
• Document pregnancy status and contrast allergy history.

Gadolinium contrast safety — document rationale when used

Gadolinium‑based contrast agents have known retention considerations; limit GBCA use to situations where contrast provides needed additional diagnostic information and document rationale per ACR/FDA guidance.

WBMRI technique variability and contrast usage — rationale for non‑coverage

Whole‑body MRI technique and sequence selection vary substantially and lack of standardization (including contrast usage) is a rationale for general non‑coverage of WBMRI for most disease states.

WBMRI sequence variability cited as reason for non‑coverage

Because sequence/technique variability affects WBMRI interpretation, lack of standardized WBMRI sequences is cited as a reason that WBMRI is generally not medically necessary.

Contrast options vary by indication (cauda equina, infection, cancer) — document justification

Contrast may be indicated by specific indications (e.g., cauda equina, infection, or cancer) — select MRI without contrast, MRI without and with contrast, or CT with/without IV contrast based on the clinical scenario and document the indication for contrast.

Contrast generally not necessary for most disc/nerve root/fracture evaluations

Contrast is generally not necessary for most disc/nerve root evaluations, fractures, and degenerative disease; a 'with contrast' study alone is appropriate only to complete a study begun without contrast.

Contrast for atypical spinal lesions when specialist recommends additional imaging

When an atypical spinal lesion on x‑ray or non‑contrast MRI requires additional characterization or is recommended by a spine specialist for surgical planning, MRI without and with contrast or CT without contrast is medically necessary; document the specialist recommendation.

CSF flow studies included in MRI codes — do not report separately

Cerebrospinal fluid (CSF) flow studies are included in MRI brain CPT codes (70551/70552/70553) and should not be reported separately.

CT alternatives when MRI contraindicated — document contraindication

When MRI is contraindicated, CT without contrast or CT myelography is an appropriate alternative for thoracic/lumbar/cervical imaging; document the MRI contraindication when ordering CT instead.

• Examples: CPT 72125/72126 (cervical), CPT 72128/72129 (thoracic), CPT 72131/72132 (lumbar).

CT alternatives for thoracic/lumbar when MRI contraindicated

When MRI is contraindicated for thoracic or lumbar indications, CT without contrast or CT myelography (post‑myelogram CT) is medically necessary as an alternative; include documentation of contraindication.

Myelopathy evaluation — MRI contrast options and documentation

For myelopathy evaluation, MRI without contrast or MRI without and with contrast are medically necessary options; document the clinical findings prompting myelopathy imaging.

CT myelography as alternative when MRI contraindicated or for surgical planning

When MRI is contraindicated or for surgical planning, CT myelography (CT with contrast) is an acceptable alternative for myelography/CT myelogram indications; document reason MRI cannot be used.

Sacroiliitis contrast considerations — document rationale

For suspected sacroiliitis or inflammatory spondylitis, MRI with contrast can increase diagnostic accuracy but must be balanced against contrast risks; document the clinical rationale for contrast use.

Contrast generally reserved for concern for malignancy or specific indications

When there is concern for malignancy or specific clinical indications, imaging may be performed without and with contrast; otherwise many spine MRIs are listed as medically necessary without contrast.

Post‑operative contrast considerations — document radiographs and contraindications

For post‑operative evaluation and suspected recurrent/worsening symptoms, MRI without and with contrast or MRI without contrast are listed as medically necessary options; CT without contrast and CT myelography are alternatives when MRI is contraindicated—document prior plain x‑rays.