M06.1 ICD-10-CM Code: Adult-onset Still's disease

M06.1 is the billable ICD-10-CM code for “Adult-onset Still's disease” in the FY 2027 U.S. code set, effective Oct 1, 2026.

Official description

M06.1

Adult-onset Still's disease

ICD-10-CM diagnosis code · United States clinical modification

Where M06.1 sits

  1. 1

    Chapter 13

    Diseases of the musculoskeletal system and connective tissue (M00-M99)

  2. 2

    Section

    Inflammatory polyarthropathies (M05-M14)

  3. 3

    Category M06

    Other rheumatoid arthritis

  4. 4

    Code M06.1

    Adult-onset Still's disease

Notes for this code

Inclusion terms

No inclusion terms are listed for M06.1.

Code first

No “code first” instruction is listed for M06.1.

Use additional code

No “use additional code” instruction is listed for M06.1.

Excludes1

Conditions that should not be reported together with this code.

  • Still's disease NOS (M08.2-)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for M06.1.

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Frequently asked questions

What does ICD-10-CM code M06.1 mean?

M06.1 is the FY 2027 U.S. ICD-10-CM code for “Adult-onset Still's disease.”

Is M06.1 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, M06.1 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is M06.1 located in ICD-10-CM?

M06.1 is listed in Chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99), within Inflammatory polyarthropathies (M05-M14) (M05–M14), under category M06, Other rheumatoid arthritis.

What coding notes are listed for M06.1?

No inclusion terms are listed for M06.1 in this reference record. No code-first instruction is listed. Excludes1 notes: Still's disease NOS (M08.2-). No Excludes2 note is listed.