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M18.11

Billable

Unilateral primary osteoarthritis of first carpometacarpal joint, right hand

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Primary osteoarthritis of the base of the thumb joint on the right hand, causing pain and stiffness in the right thumb.

Coding Tips

  • •Confirm documentation specifically identifies the right hand as the affected side
  • •This code is more specific than M18.10 and should be used when laterality is documented

Code Hierarchy

└M18Osteoarthritis of first carpometacarpal joint└M18.1Unilateral primary osteoarthritis of first carpometacarpal joint└M18.11Unilateral primary osteoarthritis of first carpometacarpal joint, right hand
└M18.11Unilateral primary osteoarthritis of first carpometacarpal joint, right hand

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