M18 Osteoarthritis of first carpometacarpal joint
ICD-10-CM category M18 sits in Chapter 13 (Diseases of the musculoskeletal system and connective tissue, M00-M99). It contains 13 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
M18.1 Unilateral primary osteoarth of first carpometacarp jointM18.3 Unil post-trauma osteoarth of first carpometacarp jointM18.5 Oth unil secondary osteoarth of first carpometacarp joint
Billable codes in M18
| Code | Description |
|---|---|
M18.0 | Bilateral primary osteoarthritis of first carpometacarpal joints |
M18.10 | Unilateral primary osteoarthritis of first carpometacarpal joint, unspecified hand |
M18.11 | Unilateral primary osteoarthritis of first carpometacarpal joint, right hand |
M18.12 | Unilateral primary osteoarthritis of first carpometacarpal joint, left hand |
M18.2 | Bilateral post-traumatic osteoarthritis of first carpometacarpal joints |
M18.30 | Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand |
M18.31 | Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, right hand |
M18.32 | Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, left hand |
M18.4 | Other bilateral secondary osteoarthritis of first carpometacarpal joints |
M18.50 | Other unilateral secondary osteoarthritis of first carpometacarpal joint, unspecified hand |
M18.51 | Other unilateral secondary osteoarthritis of first carpometacarpal joint, right hand |
M18.52 | Other unilateral secondary osteoarthritis of first carpometacarpal joint, left hand |
M18.9 | Osteoarthritis of first carpometacarpal joint, unspecified |
Search within ICD-10-CM for M18 and related codes
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