Alphabetic Index · main term
Oligomenorrhea
At the main termN91.5
Oligomenorrhea is a main term in the FY2027 ICD-10-CM Alphabetic Index (Index to Diseases and Injuries). The Index lists N91.5 for the term on its own. It has 2 subterms and 3 code entries. First-level subterms include primary, secondary. Confirm any code you find here in the Tabular List before you report it.