Hydroxyapatite deposition disease, right ankle and foot

This code signifies a condition characterized by the abnormal deposition of hydroxyapatite crystals within the soft tissues surrounding the right ankle and foot joints. This crystal deposition can lead to inflammation, pain, and limited range of motion in the affected area. It is a form of crystal arthropathy distinct from gout or pseudogout.

Apply this code when documentation clearly indicates a diagnosis of hydroxyapatite deposition disease affecting the right ankle or foot. Supporting documentation should include imaging findings (e.g., radiographs showing calcifications) and clinical symptoms consistent with crystal deposition. Use when the laterality is specifically documented as the right side.

• Ensure documentation specifies "hydroxyapatite" and not other crystal types (e.g., urate, calcium pyrophosphate).
• Verify laterality; use M11.072 for the left ankle/foot and M11.079 for unspecified.
• Do not confuse with other forms of calcific tendinitis or bursitis unless hydroxyapatite deposition is explicitly stated.