Q07.00

Billable
ChapterQ00–Q99
Ranksubcategory
Official Description

Arnold-Chiari syndrome without spina bifida or hydrocephalus

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).
General instructions are available for the parent sections:
View CH17 NotesView Q07 NotesView Q07.0 Notes

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
Q07.00Arnold-Chiari syndrome without spina bifida or hydrocephalus

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q07.00:

subcategoryQ07.0
Arnold-Chiari syndrome
View context instructions
categoryQ07
Other congenital malformations of nervous system
View context instructions
chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Q07.00. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

1 raw paths
Arnold-Chiari disease, obstruction or syndrome (type II)1 unique routes
Direct index entry→Q07.00

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 091
Other Disorders of Nervous System with MCC
DRG 092
Other Disorders of Nervous System with CC
DRG 093
Other Disorders of Nervous System without CC/MCC
DRG 791
Prematurity with Major Problems
DRG 793
Full Term Neonate with Major Problems

Cross Reference

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