Q03
Congenital hydrocephalus
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 4 never code together
Q03code
Excludes1
- Arnold-Chiari syndrome, type II (Q07.0-)Q07.0-Q07.0-Q07.0-
- acquired hydrocephalus (G91.-)G91.-G91.-G91.-
- hydrocephalus due to congenital toxoplasmosis (P37.1)P37.1P37.1P37.1
- hydrocephalus with spina bifida (Q05.0-Q05.4)Q05.0-Q05.4Q05.0-Q05.4Q05.0-Q05.4
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Instructional notes 1
Q03code
Includes
- hydrocephalus in newborn
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 4
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.