Q02 Microcephaly
Q02 is a risk-adjusting diagnosis under CMS-HCC and RxHCC models. Create a free account to see model versions, RAF contribution, and AI-powered HCC suppression analysis.
Get what a quick lookup can't: the AI assistant for official-guideline questions, HCC risk-adjustment mappings (CMS-HCC V24/V28, RxHCC), FDA drug indications, and AHA Coding Clinic references for Q02.
The ICD-10-CM code for Microcephaly is Q02 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- Q00-Q07: Congenital malformations of the nervous system (Q00-Q07)
- Category Q02
- 1 code (1 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to Q02:
- Microencephalon
- Oligoencephalon
- Hydromicrocephaly
- Micrencephalon, micrencephaly
- Microcephalus, microcephalic, microcephaly
- Hypoplasia, hypoplastic › cephalic
- Hypoplasia, hypoplastic › brain
- Idiot, idiocy (congenital) › microcephalic
U.S. Hospital Utilization
- An estimated 22,795 U.S. inpatient stays in 2023 included Q02 among the documented diagnoses.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
POA indicator for congenital conditions/anomalies and Q00-Q99 exceptionCongenital conditions and anomalies Assign “Y” for congenital conditions and anomalies except for categories Q00- Q99, Congenital anomalies, which are on the exempt list. Congenital conditions are always considered present on admission.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026
References
Cite This Page
Reference Q02 with the canonical source and edition:
Q02 — Microcephaly. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/Q02
Canonical URL: https://icd10codingpro.com/codes/Q02