M06.1
Billable codeAdult-onset Still's disease
The ICD-10 code for adult-onset still's disease is M06.1.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- Still's disease NOS (M08.2-)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M06.0Rheumatoid arthritis without rheumatoid factornon-billable header
- M06.2Rheumatoid bursitisnon-billable header
- M06.3Rheumatoid nodulenon-billable header
- M06.4Inflammatory polyarthropathy
- M06.8Other specified rheumatoid arthritisnon-billable header
- M06.9Rheumatoid arthritis, unspecified
- M06.1Adult-onset Still's disease
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 7142Approximate match
Associated MS-DRGs
M06.1 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.