All ICD10 Codes

Q03

Non-Billable
ChapterQ00–Q99
Rankcategory
Official Description

Congenital hydrocephalus

Use a more specific code (4 billable)
Q03.0Malformations of aqueduct of SylviusQ03.1Atresia of foramina of Magendie and LuschkaQ03.8Other congenital hydrocephalusQ03.9Congenital hydrocephalus, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

CH17 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • inborn errors of metabolism (E70-E88)

Instructional Notes

Includes
  • hydrocephalus in newborn
Excludes1(Not coded here. Use a different code.)
  • Arnold-Chiari syndrome, type II (Q07.0-)
  • acquired hydrocephalus (G91.-)
  • hydrocephalus due to congenital toxoplasmosis (P37.1)
  • hydrocephalus with spina bifida (Q05.0-Q05.4)

Clinical Hierarchy

BillableHas subcodes
CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q00-Q07Congenital malformations of the nervous system (Q00-Q07)
Q03Congenital hydrocephalusNot billable
Q03.0Malformations of aqueduct of SylviusBillable
Q03.1Atresia of foramina of Magendie and LuschkaBillable
Q03.8Other congenital hydrocephalusBillable
Q03.9Congenital hydrocephalus, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q03:

chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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