Familial chondrocalcinosis, vertebrae

This code signifies a genetic disorder characterized by the abnormal deposition of calcium pyrophosphate crystals within the cartilage of the vertebrae. This crystal deposition leads to inflammation and degenerative changes, specifically affecting the spinal column. It is a hereditary form of chondrocalcinosis.

Use this code when documentation explicitly states familial chondrocalcinosis affecting the vertebral column. This diagnosis is typically supported by imaging studies (e.g., X-rays showing chondrocalcinosis in spinal joints) and a family history consistent with the condition. It should be assigned when the vertebral involvement is the primary site or a significant manifestation of the familial disease.

• Ensure documentation specifies "familial" to differentiate from other forms of chondrocalcinosis.
• Do not confuse with M11.2- (Other chondrocalcinosis) or M11.8- (Other specified crystal arthropathies) which are for non-familial or unspecified types.
• Consider sequencing this code as the primary diagnosis if the vertebral chondrocalcinosis is the reason for the encounter.