Q04.3
BillableOther reduction deformities of brain
Q04.3 is the ICD-10-CM code for Other reduction deformities of brain. It is a billable, specific code valid for reimbursement.
Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities
Includes
- •Absence of part of brain
- •Agenesis of part of brain
- •Agyria
- •Aplasia of part of brain
- •Hydranencephaly
- •Hypoplasia of part of brain
- •Lissencephaly
- •Microgyria
- •Pachygyria
Excludes1 — not coded here
- •congenital malformations of corpus callosum (Q04.0)
Frequently asked questions
- What is ICD-10 code Q04.3?
- Q04.3 is the ICD-10-CM code for "Other reduction deformities of brain". It falls under Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities.
- Is Q04.3 a billable code?
- Yes — Q04.3 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from Q04.3?
- Excludes1 (not coded here): congenital malformations of corpus callosum (Q04.0).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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