M10.9 — Gout, unspecified
M10.9

What this code means
Gout is a form of arthritis caused by uric acid crystals in a joint, causing sudden severe pain, redness and swelling.
Also called: gout.
When this code is used
Used for gout when the cause and site are not specified.
Where it sits in ICD-10-CM
Code M10.9 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
Frequently asked questions
What is ICD-10-CM code M10.9?
M10.9 is the ICD-10-CM diagnosis code for “Gout, unspecified”. Gout is a form of arthritis caused by uric acid crystals in a joint, causing sudden severe pain, redness and swelling.
When is code M10.9 used?
Used for gout when the cause and site are 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.
More codes in Chapter 13
M05.9 — Rheumatoid arthritis with rheumatoid factor, unspecified
M06.9 — Rheumatoid arthritis, unspecified
M16.11 — Unilateral primary osteoarthritis, right hip
M16.12 — Unilateral primary osteoarthritis, left hip
M17.0 — Bilateral primary osteoarthritis of knee
M17.11 — Unilateral primary osteoarthritis, right knee