NPI Atlas

M06.1 – Adult-onset Still's disease

ICD-10-CM 2027 diagnosis code · Inflammatory polyarthropathies

Billable code

ICD-10-CM code M06.1

Code: M06.1 (claims format: M061)
Description: Adult-onset Still's disease
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M05-M14 Inflammatory polyarthropathies
Parent codes: M06

Notes for M06.1

Excludes1 (not coded here):

Still's disease NOS (M08.2-)

Index terms for M06.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Still's disease or syndrome, adult-onset

Related codes in M06

M06.0 – Rheumatoid arthritis without rheumatoid factorHeader
M06.2 – Rheumatoid bursitisHeader
M06.3 – Rheumatoid noduleHeader
M06.4 – Inflammatory polyarthropathyBillable
M06.8 – Other specified rheumatoid arthritisHeader
M06.9 – Rheumatoid arthritis, unspecifiedBillable

Frequently asked questions

What is ICD-10 code M06.1?

M06.1 is the ICD-10-CM code for adult-onset Still's disease, in the block M05-M14 (Inflammatory polyarthropathies).

Is M06.1 a billable code?

Yes. M06.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M06.1 belong to?

It belongs to category M06 – Other rheumatoid arthritis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.