Q00–Q99: Congenital Malformations, Deformations and Chromosomal Abnormalities
Chapter 17 of ICD-10-CM 2027, 1,095 codes in 12 blocks.
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Chapter instructions
Excludes2: not included here, code separately if applicable
- inborn errors of metabolism (E70-E88)
Blocks
- Q00-Q07Congenital malformations of the nervous system
- Q10-Q18Congenital malformations of eye, ear, face and neck
- Q20-Q28Congenital malformations of the circulatory system
- Q30-Q34Congenital malformations of the respiratory system
- Q35-Q37Cleft lip and cleft palate
- Q38-Q45Other congenital malformations of the digestive system
- Q50-Q56Congenital malformations of genital organs
- Q60-Q64Congenital malformations of the urinary system
- Q65-Q79Congenital malformations and deformations of the musculoskeletal system
- Q80-Q89Other congenital malformations
- Q90-Q99Chromosomal abnormalities, not elsewhere classified
- QA0-QA1Genetic disorders, not elsewhere classified
Codes in this chapter
All codesBillable only1,095 results
- Q00Anencephaly and similar malformations
- Q00.0Anencephaly
- Q00.1Craniorachischisis
- Q00.2Iniencephaly
- Q01Encephalocele
- Q01.0Frontal encephalocele
- Q01.1Nasofrontal encephalocele
- Q01.2Occipital encephalocele
- Q01.8Encephalocele of other sites
- Q01.9Encephalocele, unspecified
- Q02Microcephaly
- Q03Congenital hydrocephalus
- Q03.0Malformations of aqueduct of Sylvius
- Q03.1Atresia of foramina of Magendie and Luschka
- Q03.8Other congenital hydrocephalus
- Q03.9Congenital hydrocephalus, unspecified
- Q04Other congenital malformations of brain
- Q04.0Congenital malformations of corpus callosum
- Q04.1Arhinencephaly
- Q04.2Holoprosencephaly
- Q04.3Other reduction deformities of brain
- Q04.4Septo-optic dysplasia of brain
- Q04.5Megalencephaly
- Q04.6Congenital cerebral cysts
- Q04.8Other specified congenital malformations of brain
- Q04.9Congenital malformation of brain, unspecified
- Q05Spina bifida
- Q05.0Cervical spina bifida with hydrocephalus
- Q05.1Thoracic spina bifida with hydrocephalus
- Q05.2Lumbar spina bifida with hydrocephalus
- Q05.3Sacral spina bifida with hydrocephalus
- Q05.4Unspecified spina bifida with hydrocephalus
- Q05.5Cervical spina bifida without hydrocephalus
- Q05.6Thoracic spina bifida without hydrocephalus
- Q05.7Lumbar spina bifida without hydrocephalus
- Q05.8Sacral spina bifida without hydrocephalus
- Q05.9Spina bifida, unspecified
- Q06Other congenital malformations of spinal cord
- Q06.0Amyelia
- Q06.1Hypoplasia and dysplasia of spinal cord
- Q06.2Diastematomyelia
- Q06.3Other congenital cauda equina malformations
- Q06.4Hydromyelia
- Q06.8Other specified congenital malformations of spinal cord
- Q06.9Congenital malformation of spinal cord, unspecified
- Q07Other congenital malformations of nervous system
- Q07.0Arnold-Chiari syndrome
- Q07.00Arnold-Chiari syndrome without spina bifida or hydrocephalus
- Q07.01Arnold-Chiari syndrome with spina bifida
- Q07.02Arnold-Chiari syndrome with hydrocephalus
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