ICD-10 M46
Non-Billable HeaderOther inflammatory spondylopathies
About ICD-10-CM M46
ICD-10-CM code M46 represents Other inflammatory spondylopathies. This is a non-billable header code in the Musculoskeletal and Connective Tissue chapter (block M46). The 2026 edition of ICD-10-CM M46 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Medicare LCD Coverage for M46
Local Coverage Determinations (LCDs) from CMS MACs that list M46 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing M46.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but M46 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with M46
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 72148 Magnetic resonance imaging of the spine for back pain Internal Medicine
Codes Adjacent To M46
Other codes in section M45-M49 (Spondylopathies).
ICD-10 M46, Billing FAQ
Is ICD-10 code M46 billable? +
No, M46 is a non-billable header code. Use a more specific child code from block M46 when submitting claims.
What CPT codes are commonly billed with M46? +
Procedures frequently paired with M46 include: 72148.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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