G91.4

Billable

Hydrocephalus in diseases classified elsewhere

G91.4 is the ICD-10-CM code for Hydrocephalus in diseases classified elsewhere. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
G00-G99
Parent
G91
Edition
FY2026

G00-G99 Diseases of the nervous system

Excludes1 — not coded here

  • hydrocephalus due to congenital toxoplasmosis (P37.1)

Code first

  • underlying condition, such as:
  • congenital syphilis (A50.4-)
  • neoplasm (C00-D49)
  • plasminogen deficiency (E88.02)

Frequently asked questions

What is ICD-10 code G91.4?
G91.4 is the ICD-10-CM code for "Hydrocephalus in diseases classified elsewhere". It falls under G00-G99 Diseases of the nervous system.
Is G91.4 a billable code?
Yes — G91.4 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from G91.4?
Excludes1 (not coded here): hydrocephalus due to congenital toxoplasmosis (P37.1).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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