Hydroxyapatite deposition disease, unspecified hand

This code signifies a condition characterized by the abnormal deposition of hydroxyapatite crystals in the periarticular soft tissues of an unspecified hand. This crystal deposition can lead to inflammation, pain, and restricted movement, often mimicking other arthropathies.

Use this code when documentation confirms hydroxyapatite deposition disease affecting the hand, but the specific laterality (right or left) is not specified. This diagnosis is typically supported by imaging studies (e.g., X-rays showing calcifications) and clinical presentation of pain and tenderness.

• Ensure the documentation explicitly states "unspecified hand" or lacks laterality for the hand.
• Do not use this code if the laterality (right or left hand) is clearly documented; instead, use the more specific M11.041 or M11.042.
• Consider co-reporting with codes for associated symptoms like pain (e.g., M79.64-).