Alphabetic Index · main term
Hyperparathyroidism
At the main termE21.3
Hyperparathyroidism is a main term in the FY2027 ICD-10-CM Alphabetic Index (Index to Diseases and Injuries). The Index lists E21.3 for the term on its own. It has 5 subterms and 6 code entries. First-level subterms include primary, secondary, specified NEC, tertiary. Confirm any code you find here in the Tabular List before you report it.