G91.4 Billable Code
Hydrocephalus in diseases classified elsewhere
Effective From: 10/01/2016
Chapter Classification
Chapter 6
Diseases of the nervous system (G00-G99)
Section Detail
G89-G99
Other disorders of the nervous system (G89-G99)
Code Hierarchy
This code is a child of G91.
Coding Guidelines & Notes
codeFirst
- underlying condition, such as:
- congenital syphilis (A50.4-)
- neoplasm (C00-D49)
- plasminogen deficiency (E88.02)
excludes1
- hydrocephalus due to congenital toxoplasmosis (P37.1)
OPPS Editing Flags
External Cause
No
Mental Health
No
Manifestation (Edit 89)
Yes
Code First Applicable This code represents a manifestation of an underlying disease. The underlying condition must be coded first as the principal diagnosis.
No
Unacceptable PDX (Edit 113)
No
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