Other chondrocalcinosis, right ankle and foot

This code signifies a form of crystal arthropathy affecting the right ankle and foot, characterized by the deposition of calcium pyrophosphate dihydrate (CPPD) crystals in the cartilage. This condition, also known as pseudogout, can lead to inflammation, pain, and joint damage.

Apply this code when documentation explicitly states chondrocalcinosis affecting the right ankle or foot, and the specific type is not otherwise specified (e.g., familial, post-traumatic, or due to calcium pyrophosphate deposition disease). This code is appropriate for both acute flares and chronic manifestations of CPPD in this specific anatomical location.

• Ensure the documentation clearly specifies "right ankle and foot" to differentiate from other anatomical sites.
• Do not use this code if a more specific type of chondrocalcinosis (e.g., M11.1- for familial) is documented.
• Consider sequencing this code after a code for the underlying cause if known and documented (e.g., metabolic disorders).