ICD-10-CM · Chapter 17 · Q00-QA1
Q02 Microcephaly
Includes
- hydromicrocephaly
- micrencephalon
Excludes 1 (cannot be coded together)
- Meckel-Gruber syndrome (Q61.9)
Code First
- , if applicable, congenital Zika virus disease
This category is a complete, billable diagnosis code.
No additional specificity is required — submit Q02 directly on claims and documentation without a subcode extension.
Last reviewed: September 2026