Q07.0
Arnold-Chiari syndrome
Q07.0 is a non-billable ICD-10-CM code header for arnold-Chiari syndrome. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are Q07.00 Arnold-Chiari syndrome without spina bifida or hydrocephalus, Q07.01 Arnold-Chiari syndrome with spina bifida, Q07.02 Arnold-Chiari syndrome with hydrocephalus and Q07.03 Arnold-Chiari syndrome with spina bifida and hydrocephalus. Its coding notes include 2 Excludes1 entries and 4 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Chapter 17 codes can be used for life. Manifestations that are an inherent part of a specifically coded anomaly are not coded separately. A corrected malformation is reported with a personal history code.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- inborn errors of metabolism (E70-E88)
Inclusion terms
Conditions classified to this code.
- Arnold-Chiari syndrome, type II
Notes
Also from chapter/block level (1 note)
- Codes from this chapter are not for use on maternal records