Other chondrocalcinosis, multiple sites

This code signifies a form of crystal arthropathy characterized by the deposition of calcium pyrophosphate dihydrate (CPPD) crystals in the cartilage of multiple joints, leading to inflammation and degenerative changes. It represents a systemic presentation of chondrocalcinosis not otherwise specified as idiopathic, familial, or related to specific metabolic or endocrine disorders.

Apply this code when documentation confirms chondrocalcinosis affecting more than one joint, and the underlying cause is not explicitly identified as idiopathic, familial, or secondary to conditions like hemochromatosis, hyperparathyroidism, or hypomagnesemia. This is appropriate for cases where the "other" category best describes the etiology.

• Ensure documentation specifies "multiple sites" to differentiate from single-site involvement.
• Do not use this code if a more specific M11.1- (familial), M11.2- (idiopathic), or M11.3- (other specified) code for chondrocalcinosis is supported.
• Always sequence this code after any underlying metabolic or endocrine disorder if one is identified as contributing to the chondrocalcinosis.