ICD-10-CM Alphabetic Index · FY 2026 8 Entries
Arnold-Chiari disease in the ICD-10-CM Index ICD-10-CM
The main term Arnold-Chiari disease, obstruction or syndrome (type II) carries 8 index entries pointing to 5 ICD-10-CM codes. The default entry is Q07.00, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
8
Index Entries
5
Codes Referenced
Q07.00
Default Code
A
Letter
8 of 8 shown
ICD-10-CM
Index Entries Under Arnold-Chiari disease 8 entries · 5 codes
Arnold-Chiari disease, obstruction or syndrome (type II) Q07.00
with
hydrocephalus Q07.02
with spina bifida Q07.03
spina bifida Q07.01
with hydrocephalus Q07.03
type III see Encephalocele
type IV Q04.8
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
