Familial chondrocalcinosis, right ankle and foot

This diagnosis code signifies a hereditary form of calcium pyrophosphate dihydrate (CPPD) crystal deposition disease affecting the right ankle and foot. It involves the abnormal accumulation of calcium pyrophosphate crystals within the joint cartilage and soft tissues, leading to inflammation and degenerative changes.

Apply this code when documentation explicitly states familial chondrocalcinosis is present and specifically impacts the right ankle and/or foot. This typically occurs in patients with a family history of CPPD disease presenting with symptoms like pain, swelling, or stiffness in the specified joint.

• Ensure documentation clearly specifies "familial" to differentiate from other forms of chondrocalcinosis.
• Verify the laterality (right) and anatomical site (ankle and foot) are precisely documented.
• Do not use this code if the chondrocalcinosis is secondary to another condition or is idiopathic; specific codes exist for those scenarios.