M18Non-billable (header)
Osteoarthritis of first carpometacarpal joint
Sub-codes of M18(7)
M18 is a non-billable header. Select a sub-code to bill.
M18.0Bilateral primary osteoarthritis of first carpometacarpal jo…✓ BillableM18.1Unilateral primary osteoarthritis of first carpometacarpal j…HeaderM18.2Bilateral post-traumatic osteoarthritis of first carpometaca…✓ BillableM18.3Unilateral post-traumatic osteoarthritis of first carpometac…HeaderM18.4Other bilateral secondary osteoarthritis of first carpometac…✓ BillableM18.5Other unilateral secondary osteoarthritis of first carpometa…HeaderM18.9Osteoarthritis of first carpometacarpal joint, unspecified✓ Billable
Code Hierarchy
┌13Diseases of the musculoskeletal system and connective tissue (M00-M99)├M15-M19Osteoarthritis (M15-M19)├M18Osteoarthritis of first carpometacarpal joint
└M18Osteoarthritis of first carpometacarpal joint
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