ICD-10-CM code · FY2027
M18 Osteoarthritis of first carpometacarpal joint
Header codeNot billable: use one of the 13 billable codes below
About M18
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Coding notes for M18
No notes of its own.
Block M15-M19 notes (apply to every code in it)
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- osteoarthritis of spine (M47.-)
Chapter 13 notes (apply to every code in it)
Note
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Codes under M18 16
- M18.0 Bilateral primary osteoarthritis of first carpometacarpal jointsBillable
- M18.1 Unilateral primary osteoarthritis of first carpometacarpal jointHeader
- M18.10 Unilateral primary osteoarthritis of first carpometacarpal joint, unspecified handBillable
- M18.11 Unilateral primary osteoarthritis of first carpometacarpal joint, right handBillable
- M18.12 Unilateral primary osteoarthritis of first carpometacarpal joint, left handBillable
- M18.2 Bilateral post-traumatic osteoarthritis of first carpometacarpal jointsBillable
- M18.3 Unilateral post-traumatic osteoarthritis of first carpometacarpal jointHeader
- M18.30 Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified handBillable
- M18.31 Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, right handBillable
- M18.32 Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, left handBillable
- M18.4 Other bilateral secondary osteoarthritis of first carpometacarpal jointsBillable
- M18.5 Other unilateral secondary osteoarthritis of first carpometacarpal jointHeader
- M18.50 Other unilateral secondary osteoarthritis of first carpometacarpal joint, unspecified handBillable
- M18.51 Other unilateral secondary osteoarthritis of first carpometacarpal joint, right handBillable
- M18.52 Other unilateral secondary osteoarthritis of first carpometacarpal joint, left handBillable
- M18.9 Osteoarthritis of first carpometacarpal joint, unspecifiedBillable
Other categories in M15-M19
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