Current

G91 — Hydrocephalus

Part of Chapter 6: Diseases of the nervous system , block Other disorders of the nervous system (G89-G99) .

Official Notes

Includes

acquired hydrocephalus

Excludes1

Arnold-Chiari syndrome with hydrocephalus ( Q07 .-)

Excludes1

congenital hydrocephalus ( Q03 .-)

Excludes1

spina bifida with hydrocephalus ( Q05 .-)

Child Codes

Referenced By

Official notes on these codes cite G91.

Q03 Congenital hydrocephalus

FY 2027 effective October 1, 2026 · CDC NCHS and CMS