Q04.9
Billable
ChapterQ00–Q99
Ranksubcategory
Official Description
Congenital malformation of brain, unspecified
Metadata & Insights
- •2026 ICD-10-CM Edition - Effective October 1, 2025.
- •Billable/specific code (valid for reimbursement).
- •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).
Instructional Notes
Includes
- Congenital anomaly NOS of brain
- Congenital deformity NOS of brain
- Congenital disease or lesion NOS of brain
- Multiple anomalies NOS of brain, congenital
General instructions are available for the parent sections:
Clinical Hierarchy
Applicable Ancestor Context
The following parent sections contain instructions or notes that apply to Q04.9:
chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructionsAlphabetic Index Mentions
These are Diagnosis Index lookup paths that route to Q04.9. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.
12 raw paths
Anomaly, anomalous (congenital) (unspecified type)3 unique routes
Cyclencephaly1 unique routes
Deformity2 unique routes
Disease, diseased1 unique routes
Distortion (s) (congenital)1 unique routes
Lesion (s) (nontraumatic)1 unique routes
MS-DRG Classification
This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:
Cross Reference
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