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ICD-10-CM Codes Q00-Q99 Q00-Q07

Section Q00-Q07 Congenital malformations of the nervous system Q00-Q07

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( Q90-Q99 )

( Q10-Q18 )

Code List:

Q00

Code hierarchy

Q00 Anencephaly and similar malformations
- Q00.0 Anencephaly
- Q00.1 Craniorachischisis
- Q00.2 Iniencephaly

Anencephaly and similar malformations

Q01

Code hierarchy

Q01 Encephalocele
- Q01.0 Frontal encephalocele
- Q01.1 Nasofrontal encephalocele
- Q01.2 Occipital encephalocele
- Q01.8 Encephalocele of other sites
- Q01.9 Encephalocele, unspecified

Encephalocele

Q02

Microcephaly

Q03

Code hierarchy

Q03 Congenital hydrocephalus
- Q03.0 Malformations of aqueduct of Sylvius
- Q03.1 Atresia of foramina of Magendie and Luschka
- Q03.8 Other congenital hydrocephalus
- Q03.9 Congenital hydrocephalus, unspecified

Congenital hydrocephalus

Q04

Code hierarchy

Q04 Other congenital malformations of brain
- Q04.0 Congenital malformations of corpus callosum
- Q04.1 Arhinencephaly
- Q04.2 Holoprosencephaly
- Q04.3 Other reduction deformities of brain
- Q04.4 Septo-optic dysplasia of brain
- Q04.5 Megalencephaly
- Q04.6 Congenital cerebral cysts
- Q04.8 Other specified congenital malformations of brain
- Q04.9 Congenital malformation of brain, unspecified

Other congenital malformations of brain

Q05

Code hierarchy

Q05 Spina bifida
- Q05.0 Cervical spina bifida with hydrocephalus
- Q05.1 Thoracic spina bifida with hydrocephalus
- Q05.2 Lumbar spina bifida with hydrocephalus
- Q05.3 Sacral spina bifida with hydrocephalus
- Q05.4 Unspecified spina bifida with hydrocephalus
- Q05.5 Cervical spina bifida without hydrocephalus
- Q05.6 Thoracic spina bifida without hydrocephalus
- Q05.7 Lumbar spina bifida without hydrocephalus
- Q05.8 Sacral spina bifida without hydrocephalus
- Q05.9 Spina bifida, unspecified

Spina bifida

Q06

Code hierarchy

Q06 Other congenital malformations of spinal cord
- Q06.0 Amyelia
- Q06.1 Hypoplasia and dysplasia of spinal cord
- Q06.2 Diastematomyelia
- Q06.3 Other congenital cauda equina malformations
- Q06.4 Hydromyelia
- Q06.8 Other specified congenital malformations of spinal cord
- Q06.9 Congenital malformation of spinal cord, unspecified

Other congenital malformations of spinal cord

Q07

Code hierarchy

Q07 Other congenital malformations of nervous system
- Q07.0 Arnold-Chiari syndrome
  - 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
  - Q07.03 Arnold-Chiari syndrome with spina bifida and hydrocephalus
- Q07.8 Other specified congenital malformations of nervous system
- Q07.9 Congenital malformation of nervous system, unspecified

Other congenital malformations of nervous system