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Q03 Congenital hydrocephalus

ICD-10-CM category Q03 sits in Chapter 17 (Congenital malformations, deformations and chromosomal abnormalities, Q00-Q99). It contains 4 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 Q03

CodeDescription
Q03.0Malformations of aqueduct of Sylvius
Q03.1Atresia of foramina of Magendie and Luschka
Q03.8Other congenital hydrocephalus
Q03.9Congenital hydrocephalus, unspecified

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