Monoarthritis, not elsewhere classified, unspecified wrist

This code signifies inflammation affecting a single joint in the wrist, not attributable to other specified conditions. It indicates a localized arthritic process without a definitive underlying cause identified.

Apply this code when documentation specifies monoarthritis of the wrist, and the specific etiology (e.g., rheumatoid, infectious, traumatic) is not documented or is ruled out. This is appropriate for cases where the provider has not specified which wrist is affected.

• Ensure documentation explicitly states "monoarthritis" of the wrist and lacks further specificity regarding the cause.
• Avoid using this code if a more specific type of arthritis (e.g., rheumatoid arthritis, gout) is documented, even if it presents as monoarthritis.
• If the affected wrist (left or right) is specified, use the more precise laterality codes (M13.131 or M13.132).