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Spinal Ultrasound
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This clinical policy bulletin addresses when ultrasound of the spine and paraspinal tissues is considered medically necessary, investigational, or not covered, and lists applicable procedure and diagnosis codes. It applies to Aetna coverage determinations and providers submitting claims.
No material clinical or coverage changes in this revision.
Coverage Criteria
Medically necessary indications
Aetna considers spinal ultrasound medically necessary when ALL of the following groups apply (grouped by context):
Experimental and investigational
The following are considered experimental and investigational (use of ultrasound is NOT established):
Evidence summaries — SonixGPS, pre-procedural lumbar US, nerve US
Findings from the literature for specific applications:
Class of evidence: limited (feasibility/case series)
Class of evidence: pooled RCTs/meta‑analysis
Class of evidence: prospective cohort (Class IV) and case series
Aetna considers non‑operative spinal/paraspinal ultrasound in adults to be investigational/not established for diagnostic evaluation. Examples of adult clinical contexts explicitly listed include evaluation of dorsopathies, intervertebral disc disorders, scoliosis/curve assessment, dorsalgia (back pain), radiculopathy, and other neuromusculoskeletal conditions of the spine and paraspinal tissues. Corresponding ICD‑10 categories cited as not covered for these non‑neonatal adult indications include M41.x (scoliosis), M50.x–M51.x (intervertebral disc disorders), M53.x (other dorsopathies), M54.x (dorsalgia), and related nervous system and peripheral nerve disorder codes (for example, G54.0–G59), among others.
Spinal ultrasound is not described as an appropriate diagnostic tool for suspected spinal epidural abscess (SEA). When the clinical presentation and risk profile suggest SEA, the policy and cited literature state that gadolinium‑enhanced MRI of the spine should be obtained emergently to delineate the location and neural compressive effects of an abscess; spinal ultrasound is not presented as a management or primary diagnostic modality in this context.
This Clinical Policy Bulletin is a summary to assist in administering plan benefits and is not a contract. It provides a partial, general description of covered services and exclusions; specific member benefits, limitations, and exclusions are determined by the member's contract, and providers should consult plan documents and prior‑authorization procedures for definitive coverage decisions.
Diagnostic spinal or paraspinal ultrasound performed in adults for evaluation of back pain, radicular symptoms, or other non‑neonatal indications is considered investigational / not medically necessary. Professional society statements and the policy note insufficient evidence to support routine diagnostic use of spinal ultrasound in adults compared with established modalities such as CT or MRI.
Indications Considered Covered
Neonatal/infant spinal ultrasound indications
Intra-operative spinal ultrasound
Neuraxial procedural assistance (adjunct)
Pre-procedural ultrasound to facilitate neuraxial needle placement
Nerve ultrasound for suspected chronic inflammatory neuropathies (e.g., CIDP, MMN)
Real-time ultrasound with needle-tracking (SonixGPS) for neuraxial blockade
Documented clinical studies and guidelines
Coding
| 76800 | Ultrasound, spinal canal and contents |
| 62320-62323 | Injection(s) of diagnostic or therapeutic substance(s), interlaminar epidural or subarachnoid |
| 62324-62327 | Injection(s), including indwelling catheter placement, continuous infusion or intermittent bolus, interlaminar epidural or subarachnoid |
| 64400-64530 | Introduction/injection of anesthetic agent (nerve block), diagnostic or therapeutic |
| G96.0 | Cerebrospinal fluid leak [post-trauma] |
| G97.51 | Postprocedural hemorrhage of a nervous system organ or structure following a nervous system procedure [following lumbar puncture] |
| G97.61 | Postprocedural hematoma of a nervous system organ or structure following a nervous system procedure |
| G97.63 | Postprocedural seroma of a nervous system organ or structure following a nervous system procedure |
| P10.0-P10.3, P10.8-P10.9 | Subdural and cerebral hemorrhage [due to birth trauma] |
| P11.5 | Birth injury to spine and spinal cord |
| P52.0-P52.22 | Intracranial nontraumatic hemorrhage of newborn |
| P52.3 | Unspecified intraventricular (nontraumatic) hemorrhage of newborn |
| P52.5 | Subarachnoid (nontraumatic) hemorrhage of newborn |
| Q05.0-Q05.9 | Spina bifida |
| G06.1 | Intraspinal abscess and granuloma |
| G54.0-G59 | Nerve, nerve root and plexus disorders |
| G60.0-G65.2 | Polyneuropathies and other disorders of the peripheral nervous system |
| G70.00-G73.7 | Diseases of myoneural junction and muscle |
| M41.00-M41.9 | Scoliosis |
| M50.00-M51.9, M51.A0-M51.A5 | Cervical, thoracic, thoracolumbar, and lumbosacral intervertebral disc disorders |
| M53.0-M53.9 | Other and unspecified dorsopathies |
| M54.00-M54.9 | Dorsalgia |
Provider Actions / Billing Guidance
Prior authorization may be required for CPT 76800
Prior authorization may be required when billing CPT 76800; submit documentation that the study meets the policy's selection criteria (neonate/infant covered indications or intra-operative use).
- CPT 76800: Ultrasound, spinal canal and contents
- Include ICD-10 code(s) corresponding to covered neonatal/infant indications or intra-operative context
Prior authorization may be needed for SonixGPS-guided procedures
When SonixGPS or other proprietary real-time needle-tracking systems and associated proprietary needles are used, prior authorization may be required to justify use of specialized equipment and consumables.
- SonixGPS is an electromagnetic needle-tracking system used for real-time US-guided neuraxial procedures
- Evidence is limited to case reports/series and feasibility studies
No blanket prior-authorization specification for all spinal US
This policy section does not list specific universal prior authorization rules for all spinal ultrasound studies; check member benefits and prior-auth requirements for individual cases.
- The Clinical Policy Bulletin is a partial description of plan benefits and may be updated; verify coverage and authorization requirements with the plan
Denial risk for investigational adult or SonixGPS uses
Claims for spinal/paraspinal ultrasound in adults for non-operative diagnostic evaluation or for indications listed as investigational (including SonixGPS) are subject to denial.
- Adult diagnostic/non-operative uses (e.g., back pain, radiculopathy) are considered experimental/investigational
- SonixGPS is listed as experimental and investigational
Stepwise use of pre-procedural lumbar ultrasound
Use a stepwise approach for pre-procedural lumbar ultrasound: consider standard palpation techniques first and reserve pre-procedural US when clinical factors (e.g., difficult spine, obesity) suggest benefit, as evidence shows improved first-attempt success and fewer needle re-directions particularly in difficult spines.
- Pre-procedural US decreased technical failure and increased first-attempt success (NNT = 5 overall; NNT = 3 in difficult/obese patients)
- Document rationale if pre-procedural US is used up-front for clinical reasons
Document justification for novel equipment-guided procedures
When seeking coverage for novel equipment-guided procedures, provide case justification and supporting evidence; SonixGPS-related procedures have limited evidence and may require prior review.
- Case reports and small series report feasibility but larger trials are lacking
- Be prepared to document why specialized needle-tracking is necessary for the patient
Document neonatal/infant status and listed indication
When submitting claims for spinal ultrasound for covered neonatal/infant indications, include documentation that the patient is a newborn or infant and that the indication matches one of the policy-listed neonatal/infant criteria.
- Examples of covered neonatal/infant indications include detection of sequelae of injury, evaluation of suspected defects (tethering, diastematomyelia, hydromyelia, syringomyelia), guidance for lumbar puncture, lumbosacral stigmata associated with dysraphism, post-op assessment for cord retethering, caudal regression spectrum, and visualization of blood-characteristic fluid with intracranial hemorrhage
- Age limitation: most successful in newborn and early infancy; limited in infants older than 6 months
Document indication, procedure and needle details for pre-procedural lumbar US
For pre-procedural lumbar US used to facilitate neuraxial procedures, document the clinical indication (e.g., difficult spine, obesity), procedure details (number of needle passes, approach), and needle information and outcomes to support clinical benefit.
- Record indication (difficult spine, obesity, prior surgery), needle passes and re-directions, approach (in-plane vs out-of-plane), and first-attempt success or need for conversion
- Include outcomes to substantiate the clinical benefit claimed
Providers responsible for treatment decisions and benefit verification
Clinical Policy Bulletins are a partial description of plan or program benefits and do not constitute a contract; providers are responsible for treatment decisions and for verifying member-specific coverage and prior authorization requirements.
- Providers are solely responsible for medical advice and treatment of members
- Verify plan provisions for coverage details and prior authorization
Denial risk for investigational uses
Claims for investigational or experimental uses (including non-operative adult diagnostic spinal/paraspinal ultrasound and SonixGPS use) may be denied as effectiveness has not been established.
- Non-operative adult diagnostic spinal/paraspinal ultrasound is considered investigational
- SonixGPS is expressly listed as experimental and investigational
Do not use spinal US to diagnose suspected spinal epidural abscess — obtain gadolinium-enhanced MRI
Spinal ultrasound is not described as an appropriate diagnostic tool for suspected spinal epidural abscess; obtain gadolinium-enhanced MRI of the spine emergently when SEA is suspected.
- MRI with gadolinium is the diagnostic imaging modality of choice for SEA
- Spinal ultrasound is not mentioned as a management tool for SEA in reviews and guidance
No specific authorization or denial triggers stated
This section does not specify particular authorization or denial triggers for all studies; follow plan-specific prior authorization processes and provide supporting documentation as requested.
- No specific authorization/denial triggers are stated in this part of the document
- Contact the plan for case-by-case prior-authorization requirements
Prior Authorization Notes
Prior authorization required for CPT 76800 unless covered indication documented
Prior authorization is required when billing CPT 76800 unless documentation supports that the study was performed for a covered neonatal/infant indication or intra-operatively.
- CPT 76800: Ultrasound, spinal canal and contents
- Ensure submitted documentation matches policy-covered neonatal/infant indications or intra-operative use
Prior authorization may be required for real-time US with needle-tracking (SonixGPS)
When real-time ultrasound is performed with needle-tracking equipment (e.g., SonixGPS) and proprietary needles, prior authorization may be required to justify use of specialized equipment and consumables.
- SonixGPS displays current and predicted needle tip position on the ultrasound screen in real time
- Provide justification and supporting evidence due to limited current effectiveness data
Contrast and Imaging Rules
Contrast/imaging guidance for suspected SEA
When contrast or alternative imaging is indicated, follow clinical guidance: for suspected spinal epidural abscess, obtain gadolinium-enhanced MRI emergently rather than relying on spinal ultrasound.
- SEA investigations require emergent gadolinium-enhanced MRI of the spine
- Spinal ultrasound is not recommended as the diagnostic modality for SEA
Suspected spinal epidural abscess — obtain gadolinium-enhanced MRI; spinal US not recommended
For suspected spinal epidural abscess, do not use spinal ultrasound for diagnosis; obtain emergent gadolinium-enhanced MRI of the spine as the diagnostic study of choice.
- SEA often requires prompt MRI with gadolinium to delineate abscess location and neural compression
- Spinal US is not mentioned as a management or diagnostic tool for SEA in clinical reviews
Not Covered / Exclusions
Non‑operative spinal and paraspinal ultrasound in adults used for diagnostic evaluation—such as assessment of back pain, radiculopathy, paraspinal masses, or other neuromusculoskeletal spinal conditions—is considered not covered / investigational. The policy lists adult ICD‑10 groups and examples (for instance, dorsopathies, intervertebral disc disorders, scoliosis, and dorsalgia) as contexts in which ultrasound is not established for diagnostic use in adults.
Use of spinal ultrasound as the primary diagnostic modality for suspected spinal epidural abscess is not covered. The referenced clinical reviews emphasize that when SEA is suspected, gadolinium‑enhanced MRI is the diagnostic imaging study of choice and should be obtained emergently; spinal ultrasound is not described as an appropriate management tool in the evaluation of SEA.
Background
Spinal ultrasound is a noninvasive imaging technique primarily useful in newborns and young infants because the posterior bony elements are incompletely ossified, permitting sonographic visualization of the spinal canal and cord. Professional society guidance and reviews historically limit routine diagnostic use in adults owing to insufficient evidence of diagnostic accuracy compared with CT or MRI. Ultrasound is also used intra‑operatively and as an adjunct to neuraxial procedures, where evidence supports improved localization and procedural precision in selected situations.
Definitions
Evidence and References
Evidence summaries — SonixGPS, pre-procedural lumbar US, nerve US (for content writer)
Findings from the literature for specific applications (summary for content writers):
See SonixGPS case report and case‑series (Wong et al., Brinkman et al., Niazi et al.)
See Sidiropoulou et al.; Perlas et al.
See Herraets et al.
Bibliographic support
Bibliographic support referenced by the policy (selected chunks for citation):
Revision History
Policy originally became effective.
Policy last reviewed on 09/12/2023; content and references updated as applicable.
Next scheduled policy review date.
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