Other reactive arthropathies, unspecified ankle and foot

This code signifies an inflammatory joint condition affecting the ankle and/or foot that arises as a reaction to an infection elsewhere in the body, but the specific type of reactive arthropathy is not documented. It encompasses various forms of post-infectious arthritis where the causative organism or specific syndrome (e.g., Reiter's) is not specified.

Use this code when documentation indicates reactive arthritis involving the ankle and/or foot, but the physician has not specified the exact type of reactive arthropathy. This would apply when a patient presents with joint pain and swelling in the ankle/foot following an infection, and the diagnosis is confirmed as reactive arthritis without further specificity.

• Ensure the documentation clearly states "reactive arthropathy" and specifies the ankle and/or foot as the affected site.
• If the specific type of reactive arthropathy (e.g., Reiter's disease) is known, a more specific code from the M02 category should be used.
• Always look for documentation of the underlying infection, as a code for the infection may also be required.