Hydroxyapatite deposition disease, unspecified knee

This code signifies a condition characterized by the deposition of hydroxyapatite crystals within or around the joints, specifically affecting an unspecified knee. This crystal deposition can lead to inflammation, pain, and limited range of motion in the affected joint.

Apply this code when documentation confirms hydroxyapatite deposition disease impacting the knee, but the specific laterality (right or left) is not documented. This is appropriate when the provider has diagnosed the condition based on imaging (e.g., radiographs showing calcifications) or aspiration findings.

• Do not use this code if the laterality of the affected knee is specified; instead, use the more specific codes for right (M11.061) or left (M11.062) knee.
• Ensure documentation clearly states "hydroxyapatite deposition disease" or a synonym like "calcific periarthritis" or "calcific tendinitis" of the knee.
• Consider co-reporting codes for associated symptoms like pain (e.g., M25.56-) if documented and not inherent to the disease itself.