G91 Hydrocephalus
ICD-10-CM category G91 sits in Chapter 6 (Diseases of the nervous system, G00-G99). It contains 7 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Billable codes in G91
| Code | Description |
|---|---|
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 |
Search within ICD-10-CM for G91 and related codes
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