ICD-10 Diagnosis Code Q07.00

Arnold-Chiari syndrome without spina bifida or hydrocephalus

Diagnosis Code Q07.00

ICD-10: Q07.00
Short Description: Arnold-Chiari syndrome without spina bifida or hydrocephalus
Long Description: Arnold-Chiari syndrome without spina bifida or hydrocephalus
This is the 2018 version of the ICD-10-CM diagnosis code Q07.00

Valid for Submission
The code Q07.00 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • Congenital malformations of the nervous system (Q00-Q07)
      • Other congenital malformations of nervous system (Q07)

Information for Patients


Chiari Malformation

Also called: Arnold-Chiari Malformation

Chiari malformations (CMs) are structural defects in the cerebellum. The cerebellum is the part of the brain that controls balance. With CM, brain tissue extends into the spinal canal. It can happen when part of the skull is too small, which pushes the brain tissue down. There are several types of CM. One type often happens in children who have neural tube defects. Some types cause no symptoms and don't need treatment. If you have symptoms, they may include

  • Neck pain
  • Balance problems
  • Numbness or other abnormal feelings in the arms or legs
  • Dizziness
  • Vision problems
  • Difficulty swallowing
  • Poor hand coordination

Doctors diagnose CM using imaging tests. Medicines may ease some symptoms, such as pain. Surgery is the only treatment available to correct or stop the progression of nerve damage.

NIH: National Institute of Neurological Disorders and Stroke


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