M18

Non-Billable

Osteoarthritis of first carpometacarpal joint

M18 should not be used for reimbursement purposes as there are multiple sub-diagnoses that fall under this code. Please refer to the sub-diagnoses below.

Related Diagnoses

  • M18.0Bilateral primary osteoarthritis of first carpometacarpal joints
  • M18.1Unilateral primary osteoarthritis of first carpometacarpal joint
    • M18.10Unilateral primary osteoarthritis of first carpometacarpal joint, unspecified hand
    • M18.11Unilateral primary osteoarthritis of first carpometacarpal joint, right hand
    • M18.12Unilateral primary osteoarthritis of first carpometacarpal joint, left hand
  • M18.2Bilateral post-traumatic osteoarthritis of first carpometacarpal joints
  • M18.3Unilateral post-traumatic osteoarthritis of first carpometacarpal joint
    • M18.30Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand
    • M18.31Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, right hand
    • M18.32Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, left hand
  • M18.4Other bilateral secondary osteoarthritis of first carpometacarpal joints
  • M18.5Other unilateral secondary osteoarthritis of first carpometacarpal joint
    • M18.50Other unilateral secondary osteoarthritis of first carpometacarpal joint, unspecified hand
    • M18.51Other unilateral secondary osteoarthritis of first carpometacarpal joint, right hand
    • M18.52Other unilateral secondary osteoarthritis of first carpometacarpal joint, left hand
  • M18.9Osteoarthritis of first carpometacarpal joint, unspecified
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