Other chondrocalcinosis, left ankle and foot

This code signifies the presence of chondrocalcinosis, a condition characterized by calcium pyrophosphate dihydrate crystal deposition, affecting the left ankle and foot. It represents a form of crystal arthropathy distinct from gout or other specified types of chondrocalcinosis.

Apply this code when documentation explicitly states "chondrocalcinosis" in the left ankle or foot, and further specificity (e.g., primary, familial, post-traumatic) is not provided. This code is appropriate when the provider has diagnosed chondrocalcinosis but has not identified a more specific etiology.

• Ensure documentation specifies "left ankle and foot" for accurate laterality and site assignment.
• Distinguish from gout (M10.-) and other specified forms of chondrocalcinosis (e.g., M11.1- for familial, M11.2- for primary).
• Look for supporting diagnostic evidence such as imaging reports (e.g., X-ray showing chondrocalcinosis) or synovial fluid analysis.