Q03.1
✓ BillableAtresia of foramina of Magendie and Luschka
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Also Known As
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • 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 Description
ICD-10-CM code Q03.1 represents atresia of foramina of magendie and luschka. This code falls under the Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory. Coders should note that Q03.1 has 4 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code Q03.1?
ICD-10-CM code Q03.1 is "Atresia of foramina of Magendie and Luschka". It belongs to the category: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0).
Is Q03.1 a billable ICD-10 code?
Yes, Q03.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
What codes are excluded with Q03.1?
Q03.1 has 4 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Related Codes in Q03
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)