M08
ICD-10Non-billable categoryJuvenile arthritis
Official ICD-10-CM descriptor (FY2026)
Juvenile arthritis
M08 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- arthropathy in Whipple's disease (M14.8)
- Felty's syndrome (M05.0)
- juvenile dermatomyositis (M33.0-)
- psoriatic juvenile arthropathy (L40.54)
Code also
Two codes may be needed; sequencing depends on the reason for the encounter.
- any associated underlying condition, such as:
- regional enteritis [Crohn's disease] (K50.-)
- ulcerative colitis (K51.-)
More specific codes under M08
- M08.0Unspecified juvenile rheumatoid arthritiscategory
- M08.1Juvenile ankylosing spondylitis
- M08.2Juvenile rheumatoid arthritis with systemic onsetcategory
- M08.3Juvenile rheumatoid polyarthritis (seronegative)
- M08.4Pauciarticular juvenile rheumatoid arthritiscategory
- M08.8Other juvenile arthritiscategory
- M08.9Juvenile arthritis, unspecifiedcategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.