Q02
✓ Billable
Microcephaly
ICD-10-CM · FY2026 · Congenital Malformations, Deformations and Chromosomal Abnormalities
Code
Q02
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Congenital Malformations, Deformations and Chromosomal Abnormalities
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Includes
- hydromicrocephaly
- micrencephalon
Excludes1 — never code together
- Meckel-Gruber syndrome (Q61.9)
Code first
- , if applicable, congenital Zika virus disease
Frequently asked questions
What is ICD-10 code Q02?
ICD-10-CM code Q02 represents Microcephaly. It is a billable diagnosis code in the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter, effective October 1, 2025 – September 30, 2026.
Is Q02 billable?
Yes. Q02 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is Q02 in?
Q02 belongs to the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter (Q00–Q99) of ICD-10-CM.
Search all 98,186 ICD-10-CM codes instantly
Search ICDwise →