2022 ICD-10-CM Codes for Hydrocephalus (G91)

Clinical Terms for Hydrocephalus (G91)

Hydrocephalus-. Excessive accumulation of cerebrospinal fluid within the cranium which may be associated with dilation of cerebral ventricles, INTRACRANIAL HYPERTENSION; HEADACHE; lethargy; URINARY INCONTINENCE; and ATAXIA.

Instructional Notations

Includes Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

  • acquired hydrocephalus

Type 1 Excludes Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • Arnold-Chiari syndrome with hydrocephalus Q07
  • congenital hydrocephalus Q03
  • spina bifida with hydrocephalus Q05