M18.5 Other unilateral secondary osteoarthritis of first carpometacarpal joint

Non-billable header with 3 child codes.

Applicable to

• Secondary osteoarthritis of first carpometacarpal joint NOS

Codes under M18.5

• 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

Code annotations containing back-references to M18.5

Back-references to M18

• Type 1 Excludes: M12 Other and unspecified arthropathy ("arthrosis (M15-M19)")
• Type 1 Excludes: M13 Other arthritis ("arthrosis (M15-M19)")
• Type 1 Excludes: M13 Other arthritis ("osteoarthritis (M15-M19)")
• Type 1 Excludes: M13.8 Other specified arthritis ("osteoarthritis (M15-M19)")
• Type 1 Excludes: M15 Polyosteoarthritis ("bilateral involvement of single joint (M16-M19)")

Diagnosis Index entries for M18.5

• Osteoarthritis › secondary › hand joint › first carpometacarpal joint

Nearby codes

• M18.3 Unilateral post-traumatic osteoarthritis of first carpometacarpal joint
• 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
• M18.5 Other unilateral secondary osteoarthritis of first carpometacarpal joint (this code)
• 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