Q03.1

Billable

ChapterQ00–Q99

Ranksubcategory

Official Description

Atresia of foramina of Magendie and Luschka

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

Instructional Notes

Includes

Dandy-Walker syndrome

General instructions are available for the parent sections:

View CH17 Notes View Q03 Notes

Clinical Hierarchy

CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

Q00-Q07Congenital malformations of the nervous system (Q00-Q07)

Q03Congenital hydrocephalus

Q03.1Atresia of foramina of Magendie and Luschka

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q03.1:

categoryQ03

Congenital hydrocephalus

View context instructions

chapterCH17

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Q03.1. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

8 raw paths

Atresia, atretic2 unique routes

foramen of(2 variants)

Luschka→Q03.1

Magendie→Q03.1

Block, blocked1 unique routes

foramen Magendie (acquired)

congenital→Q03.1

Cyst (colloid) (mucous) (simple) (retention)1 unique routes

Dandy-Walker→Q03.1

Dandy-Walker syndrome1 unique routes

Direct index entry→Q03.1