ICD-10-CM > E00-E89 > E70-E88 > E83 > E83.5 E83.5 Disorders of calcium metabolism Non-Billable/Non-Specific Type 1 Excludes autoimmune hypoparathyroidism (E20.812)autosomal dominant hypocalcemia (E20.810)chondrocalcinosis (M11.1-M11.2)hungry bone syndrome (E83.81)hyperparathyroidism (E21.0-E21.3)secondary hypoparathyroidism in diseases classified elsewhere (E20.811) Codes E83.50Unspecified disorder of calcium metabolismE83.51HypocalcemiaE83.52HypercalcemiaE83.59Other disorders of calcium metabolism