Alphabetic Index · main term
Hydrocalycosis
Hydrocalycosis is a main term in the FY2027 ICD-10-CM Alphabetic Index (Index to Diseases and Injuries). It is a cross-reference: the Index sends you to Hydronephrosis, which lists N13.30. Confirm the code in the Tabular List before you report it.
Where the Index sends you
see Hydronephrosis (atrophic) (early) (functionless) (intermittent) (primary) (secondary) NEC
Unspecified hydronephrosis