Q04.0

Congenital malformations of corpus callosum

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 2 never code together

Q04code

Excludes1

cyclopia (Q87.0)Q87.0
macrocephaly (Q75.3)Q75.3

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Instructional notes 1

Q04.0code

Inclusion terms

Agenesis of corpus callosum

Index entries leading here 5

Absence (of) (organ or part) (complete or partial)
- corpus callosum Q04.0
Agenesis
- corpus callosum Q04.0
Aplasia — see also Agenesis
- corpus callosum Q04.0
Hypoplasia, hypoplastic
- corpus callosum Q04.0
Malformation (congenital) — see also Anomaly
- corpus callosum (congenital) Q04.0

Alongside this code 8 same parent — Q04

Q04.1 Arhinencephaly Q04.2 Holoprosencephaly Q04.3 Other reduction deformities of brain Q04.4 Septo-optic dysplasia of brain Q04.5 Megalencephaly Q04.6 Congenital cerebral cysts Q04.8 Other specified congenital malformations of brain Q04.9 Congenital malformation of brain, unspecified

Medications 1

2 Agenesis of Corpus Callosum drugs

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC72 CMS28HCC182 ESRD21HCC72 ESRD24HCC72 RX08HCC155

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: Q04
Block: Q00-Q07
Siblings: 8

Present FY2024–FY2027.