Q07

Non-Billable
ChapterQ00–Q99
Rankcategory
Official Description

Other congenital malformations of nervous system

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

CH17 Parent Instructions

Excludes2(Not included here)
  • inborn errors of metabolism (E70-E88)

Instructional Notes

Excludes2(Not included here)
  • congenital central alveolar hypoventilation syndrome (G47.35)
  • familial dysautonomia [Riley-Day] (G90.1)
  • neurofibromatosis (nonmalignant) (Q85.0-)

Clinical Hierarchy

CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q00-Q07Congenital malformations of the nervous system (Q00-Q07)
Q07Other congenital malformations of nervous system
Q07.0Arnold-Chiari syndrome
Q07.8Other specified congenital malformations of nervous system
Q07.9Congenital malformation of nervous system, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q07:

chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Q07. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Abnormal, abnormality, abnormalities1 unique routes
development, developmental
central nervous system→Q07
Accessory (congenital)1 unique routes
nervous system, part NEC→Q07
Adhesions, adhesive (postinfective)1 unique routes
meninges (cerebral) (spinal)
congenital→Q07
Agenesis3 unique routes
nerve→Q07
nervous system, part NEC→Q07
nuclear→Q07
Anomaly, anomalous (congenital) (unspecified type)13 unique routes
acoustic nerve→Q07
choroid
plexus→Q07
gyri→Q07
meningeal bands or folds→Q07(2 variants)
constriction of→Q07
meninges→Q07
nerve→Q07(3 variants)
acoustic→Q07
optic→Q07
nervous system (central)→Q07
optic
nerve→Q07
sense organs NEC→Q07
spine, spinal NEC
nerve root→Q07
Arnold-Chiari disease, obstruction or syndrome (type II)5 unique routes
Direct index entry→Q07
with(4 variants)
hydrocephalus→Q07(2 variants)
with spina bifida→Q07
spina bifida→Q07(2 variants)
with hydrocephalus→Q07
Deformity1 unique routes
choroid (congenital)
plexus→Q07

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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