Hyperfunction

Hyperfunction is a main term in the FY2027 ICD-10-CM Alphabetic Index (Index to Diseases and Injuries). It has 12 subterms and 12 code entries. First-level subterms include adrenal cortex, not associated with Cushing's syndrome, ovarian, pancreas, parathyroid, pituitary, polyglandular, testicular. Confirm any code you find here in the Tabular List before you report it.