ICD-10-CM
ICD-10 code for Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent) specified NEC: G91.8
The ICD-10-CM index points "Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent) specified NEC" to G91.8, Other hydrocephalus. G91.8 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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