ICD-10 M08
Non-Billable HeaderJuvenile arthritis
About ICD-10-CM M08
ICD-10-CM code M08 represents Juvenile arthritis. This is a non-billable header code in the Musculoskeletal and Connective Tissue chapter (block M08). The 2026 edition of ICD-10-CM M08 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.
Type 1 Excludes
Pure excludes, these codes can never be coded together with M08. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- arthropathy in Whipple's disease (M14.8)
- Felty's syndrome (M05.0)
- juvenile dermatomyositis (M33.0-)
- psoriatic juvenile arthropathy (L40.54)
Coding Notes
Code Also
- any associated underlying condition, such as:
- regional enteritis [Crohn's disease] (K50.-)
- ulcerative colitis (K51.-)
Medicare LCD Coverage for M08
Local Coverage Determinations (LCDs) from CMS MACs that list M08 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 M08.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but M08 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with M08
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To M08
Other codes in section M05-M14 (Inflammatory polyarthropathies).
ICD-10 M08, Billing FAQ
Is ICD-10 code M08 billable? +
No, M08 is a non-billable header code. Use a more specific child code from block M08 when submitting claims.
What codes are Type 1 Excludes for M08? +
Type 1 Excludes (never code together with M08): arthropathy in Whipple's disease (M14.8); Felty's syndrome (M05.0); juvenile dermatomyositis (M33.0-)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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