ICD-10-CM · Chapter 17 · Q00-QA1
Q07 Other congenital malformations of nervous system
Excludes 2 (not included here)
- congenital central alveolar hypoventilation syndrome (G47.35)
- familial dysautonomia [Riley-Day] (G90.1)
- neurofibromatosis (nonmalignant) (Q85.0-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| Q07..0 | Arnold-Chiari syndrome | No |
| Q07..00 | Arnold-Chiari syndrome without spina bifida or hydrocephalus | Yes |
| Q07..01 | Arnold-Chiari syndrome with spina bifida | Yes |
| Q07..02 | Arnold-Chiari syndrome with hydrocephalus | Yes |
| Q07..03 | Arnold-Chiari syndrome with spina bifida and hydrocephalus | Yes |
| Q07..8 | Other specified congenital malformations of nervous system | Yes |
| Q07..9 | Congenital malformation of nervous system, unspecified | Yes |
Last reviewed: September 2026