Hydroxyapatite deposition disease, left wrist

This code signifies a condition characterized by the abnormal deposition of calcium hydroxyapatite crystals within the soft tissues of the left wrist, often leading to pain, swelling, and restricted joint movement. It is a form of crystal arthropathy, distinct from gout or pseudogout. The deposits can occur in tendons, ligaments, or joint capsules.

Use this code when documentation explicitly states a diagnosis of hydroxyapatite deposition disease affecting the left wrist. Supporting clinical findings typically include imaging evidence (e.g., X-rays showing calcifications) and patient symptoms localized to the left wrist. This code is appropriate for both acute and chronic presentations of the condition.

• Ensure the documentation specifies "left wrist" as the affected site; laterality is crucial for accurate coding.
• Do not confuse this with other crystal arthropathies like gout (M10.-) or calcium pyrophosphate deposition disease (M11.1-).
• Code any associated pain (e.g., M25.532 for pain in left wrist) as a secondary diagnosis if documented.