ICD-10 Code for Still's Disease or Syndrome
Also indexed as (juvenile)
The ICD-10-CM code for Still's Disease or Syndrome is M08.20 — Juvenile rheumatoid arthritis with systemic onset, unspecified site. This is the code the Alphabetic Index gives for Still's Disease or Syndrome with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
M08.20 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which Still's Disease or Syndrome code should you use?
The Alphabetic Index lists 12 codes under Still's disease or syndrome. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| adult-onset | M06.1 | Adult-onset Still's disease |
| ankle | M08.27Not billable | Juvenile rheumatoid arthritis with systemic onset, ankle and foot |
| elbow | M08.22Not billable | Juvenile rheumatoid arthritis with systemic onset, elbow |
| foot joint | M08.27Not billable | Juvenile rheumatoid arthritis with systemic onset, ankle and foot |
| hand joint | M08.24Not billable | Juvenile rheumatoid arthritis with systemic onset, hand |
| hip | M08.25Not billable | Juvenile rheumatoid arthritis with systemic onset, hip |
| knee | M08.26Not billable | Juvenile rheumatoid arthritis with systemic onset, knee |
| multiple site | M08.29 | Juvenile rheumatoid arthritis with systemic onset, multiple sites |
| shoulder | M08.21Not billable | Juvenile rheumatoid arthritis with systemic onset, shoulder |
| specified site NEC | M08.2A | Juvenile rheumatoid arthritis with systemic onset, other specified site |
| vertebra | M08.28 | Juvenile rheumatoid arthritis with systemic onset, vertebrae |
| wrist | M08.23Not billable | Juvenile rheumatoid arthritis with systemic onset, wrist |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources