Q07.9 Congenital malformation of nervous system, unspecified
The ICD-10-CM code for Congenital malformation of nervous system, unspecified is Q07.9 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- Q00-Q07: Congenital malformations of the nervous system (Q00-Q07)
- Category Q07
- 8 codes (6 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to Q07.9:
- Dysplasia › brain
- Anomaly, anomalous (congenital) (unspecified type) › nervous system (central)
- Deformity › meninges or membrane (congenital)
- Anomaly, anomalous (congenital) (unspecified type) › nerve
- Anomaly, anomalous (congenital) (unspecified type) › meningeal bands or folds
- Anomaly, anomalous (congenital) (unspecified type) › meninges
- Anomaly, anomalous (congenital) (unspecified type) › gyri
- Deformity › nervous system (congenital)
Inclusion Terms
- Congenital anomaly NOS of nervous system
- Congenital deformity NOS of nervous system
- Congenital disease or lesion NOS of nervous system
U.S. Hospital Utilization
- An estimated 565 U.S. inpatient stays in 2023 included Q07.9 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