Injection Therapy for Headache (Migraine and Other) and Non-Spine Management
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Defines coverage and medical policy for sphenopalatine ganglion (SPG) blocks and other peripheral nerve injection/blocks for headache (including migraine, cluster, tension, cervicogenic, occipital neuralgia, PDPH) and non-spine indications for Blue Cross Blue Shield North Carolina members and providers.
No material clinical or coverage changes in this revision.
Coverage Criteria
Not covered — investigational nerve blocks
Covered when ALL of the following are met
Explicit policy statement that investigational services are not covered; applies to SPG and other listed nerves.
This policy excludes nerve blocks for all indications, including but not limited to the following nerves and anatomic targets: sphenopalatine (SPG), trigeminal, occipital, auricular, periorbital, facial, suprascapular, spinal accessory, cervical plexus, axillary, brachial plexus, temporomandibular joint (TMJ), masseter, and unlisted neurologic procedures.
Nerve blocks (peripheral or other injection pain blocks) are considered investigational for all indications. Because investigational services are not covered by BCBSNC, these procedures are excluded from coverage for acute or chronic migraine, other non-migraine headaches, and other pain syndromes.
Sphenopalatine ganglion (SPG) blocks, including intranasal SPG procedures, are specifically categorized as investigational for all indications, including treatment of migraine and non-migraine headaches; therefore SPG blocks are not covered.
Policy history: The policy was first developed on 7/28/17 with the position that SPG blocks are investigational for all indications. Subsequent advisory panel reviews and updates (listed through 9/29/23) have maintained this investigational classification.
Applicable Codes
| G43.001 | |
| G43.009 | |
| G43.011 | |
| G43.019 | |
| G43.101 | |
| G43.109 | |
| G43.111 | |
| G43.119 | |
| G43.401 | |
| G43.409 |
| G43.001 | |
| G43.009 | |
| G43.011 | |
| G43.019 | |
| G43.101 | |
| G43.109 | |
| G43.111 | |
| G43.119 | |
| G43.401 | |
| G43.409 |
Provider Actions and Billing
Verify prior authorization for listed CPT/HCPCS codes
These procedure codes are listed as applicable to this policy; verify prior authorization requirements per member benefit design and BCBSNC administrative policies.
Code inclusion does not ensure payment — medical necessity review may be required
Inclusion of a code in the policy’s billing section does not guarantee reimbursement; BCBSNC may require medical records to determine medical necessity prior to payment.
Document prior use of guideline-based pharmacologic and behavioral therapies
Policy references guideline-based acute and preventive pharmacologic and behavioral therapies (e.g., triptans, ergotamines, lasmiditan, CGRP antagonists, NSAIDs, antiemetics) and botulinum toxin for chronic migraine as standard treatments prior to investigational procedures.
- Acute: triptans, ergotamines, lasmiditan, CGRP antagonists, NSAIDs, antiemetics
- Preventive/prophylactic options and behavioral therapies; botulinum toxin type A for chronic migraine
Investigational status — do not anticipate coverage
BCBSNC considers peripheral and other injection pain blocks investigational for all indications; do not expect coverage for these procedures.
- Includes but is not limited to SPG, trigeminal, occipital, auricular, periorbital, facial, suprascapular, spinal accessory, cervical plexus, axillary, brachial plexus, TMJ, masseter.
Include appropriate CPT/HCPCS and ICD-10 codes in documentation
Provider documentation should include the appropriate CPT/HCPCS procedure code(s) listed in the policy and the supporting ICD-10 diagnosis code(s) relevant to the member’s condition.
- Use listed procedure codes when applicable (see policy coding section).
- Include supporting ICD-10 diagnosis code(s) as applicable.
When records are requested, provide full supporting documentation (letters alone often insufficient)
When BCBSNC requests medical records for determination of medical necessity, submit complete clinical documentation; letters of support/explanation alone are often not sufficient unless they include all specific information needed.
- Include full clinical history, prior treatments, and details of procedure performed.
- Attach objective findings and any imaging or test results referenced in the record.
Risk of denial — investigational nerve blocks
Claims for peripheral or other injection pain blocks (including SPG and listed peripheral nerve blocks) will be denied as investigational.
- Denial applies to SPG, trigeminal, occipital, auricular, periorbital, facial, suprascapular, spinal accessory, cervical plexus, axillary, brachial plexus, TMJ, masseter, and unlisted neurologic procedures.
Medical records may be requested; letters alone may not suffice
BCBSNC may request medical records to determine medical necessity; letters of support or explanation are useful but often insufficient unless they include all specific information needed for the determination.
- Be prepared to submit complete medical records rather than only letters when requested.
Background
Headache disorders (including migraine, tension-type, cluster, cervicogenic headache, occipital neuralgia, and post-dural puncture headache) are common and heterogeneous in mechanism and presentation. SPG blocks and other peripheral nerve injections have been proposed as treatments for acute and preventive management, but the policy concludes that evidence is insufficient to support these procedures. As stated in the policy, nerve blocks are considered investigational for all indications, and BCBSNC does not provide coverage for investigational services.
Definitions
Conservative Treatment Requirements
Frequency Limits
Imaging and Diagnostic Requirements
Use diagnostic anesthetic facet/lateral atlanto‑axial block to confirm cervicogenic headache
An anesthetic block of the lateral atlanto‑axial joint, the C2‑3 facet joint, or the C3‑4 facet joint may be used to confirm a diagnosis of cervicogenic headache; the policy does not provide imaging specification details.
- Diagnostic anesthetic facet or lateral atlanto‑axial block can confirm cervicogenic headache.
Not Covered
Not covered: SPG block and other peripheral nerve blocks for headache and non-spine pain are investigational and therefore not covered. See the exclusions list for specific nerves and targets (for example: sphenopalatine, trigeminal, occipital, auricular, periorbital, facial, suprascapular, spinal accessory, cervical plexus, axillary, brachial plexus, TMJ, and masseter). The policy origin notes the SPG investigational designation was established 7/28/17 and has been reaffirmed in later policy updates.
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