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M06.9 — Rheumatoid arthritis, unspecified
M06.9
What this code means
Rheumatoid arthritis is a chronic autoimmune condition causing painful, swollen joints and progressive joint damage.
Also called: rheumatoid arthritis, ra.
When this code is used
Used for rheumatoid arthritis when the type is not specified.
Where it sits in ICD-10-CM
Code M06.9 belongs to Chapter 13: Diseases of the musculoskeletal system and connective tissue, which covers codes M00–M99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
Watch: related videos
Frequently asked questions
What is ICD-10-CM code M06.9?
M06.9 is the ICD-10-CM diagnosis code for “Rheumatoid arthritis, unspecified”. Rheumatoid arthritis is a chronic autoimmune condition causing painful, swollen joints and progressive joint damage.
When is code M06.9 used?
Used for rheumatoid arthritis when the type is not specified. It belongs to Chapter 13 of ICD-10-CM (Diseases of the musculoskeletal system and connective tissue).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.