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G91 - Hydrocephalus


The ICD 10 Code for Hydrocephalus is listed as G91.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: G91
Description: Hydrocephalus
  • Includes: acquired hydrocephalus
  • Excludes1: Arnold-Chiari syndrome with hydrocephalus (Q07.-)
  • congenital hydrocephalus (Q03.-)
  • spina bifida with hydrocephalus (Q05.-)
Chapter Diseases of the nervous system (G00-G99)
ICD-10-CM Children (deeper level / typically more specific) of G91:
G91.0 - Communicating hydrocephalus
G91.1 - Obstructive hydrocephalus
G91.2 - (Idiopathic) normal pressure hydrocephalus
G91.3 - Post-traumatic hydrocephalus, unspecified
G91.4 - Hydrocephalus in diseases classified elsewhere
G91.8 - Other hydrocephalus
G91.9 - Hydrocephalus, unspecified