M18.30: Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand
M18.30 is the billable ICD-10-CM diagnosis code for Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code M18.30?
M18.30 is the ICD-10-CM diagnosis code for Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand. It belongs to category M18 (Osteoarthritis of first carpometacarpal joint).
Is M18.30 a billable code?
Yes. M18.30 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does M18.30 belong to?
M18.30 is part of ICD-10-CM category M18 — Osteoarthritis of first carpometacarpal joint, which has 26 billable codes.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free