Chapter 17
Range: Q00-Q99
FY2027 Dataset
ICD-10-CM Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Structural congenital anomalies and chromosomal syndromes.
Key Diagnosis Codes in Chapter 17
Verified against active FY2027 CDC NCHS code tables.
Showing active FY2027 codes
| Code | Official Descriptor | Status | Action |
|---|---|---|---|
| Q00.0 |
Anencephaly
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|
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| Q00.1 |
Craniorachischisis
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| Q00.2 |
Iniencephaly
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| Q01.0 |
Frontal encephalocele
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|
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| Q01.1 |
Nasofrontal encephalocele
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|
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| Q01.2 |
Occipital encephalocele
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|
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| Q01.8 |
Encephalocele of other sites
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|
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| Q01.9 |
Encephalocele, unspecified
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| Q02 |
Microcephaly
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|
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| Q03.0 |
Malformations of aqueduct of Sylvius
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|
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| Q03.1 |
Atresia of foramina of Magendie and Luschka
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|
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| Q03.8 |
Other congenital hydrocephalus
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|
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| Q03.9 |
Congenital hydrocephalus, unspecified
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|
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| Q04.0 |
Congenital malformations of corpus callosum
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| Q04.1 |
Arhinencephaly
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| Q04.2 |
Holoprosencephaly
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|
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| Q04.3 |
Other reduction deformities of brain
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|
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| Q04.4 |
Septo-optic dysplasia of brain
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|
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| Q04.5 |
Megalencephaly
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|
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| Q04.6 |
Congenital cerebral cysts
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|
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| Q04.8 |
Other specified congenital malformations of brain
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|
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| Q04.9 |
Congenital malformation of brain, unspecified
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|
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| Q05.0 |
Cervical spina bifida with hydrocephalus
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|
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| Q05.1 |
Thoracic spina bifida with hydrocephalus
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|
Billable Code | View Code |
| Q05.2 |
Lumbar spina bifida with hydrocephalus
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|
Billable Code | View Code |
| Q05.3 |
Sacral spina bifida with hydrocephalus
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|
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| Q05.4 |
Unspecified spina bifida with hydrocephalus
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|
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| Q05.5 |
Cervical spina bifida without hydrocephalus
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|
Billable Code | View Code |
| Q05.6 |
Thoracic spina bifida without hydrocephalus
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Billable Code | View Code |
| Q05.7 |
Lumbar spina bifida without hydrocephalus
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|
Billable Code | View Code |
| Q05.8 |
Sacral spina bifida without hydrocephalus
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|
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| Q05.9 |
Spina bifida, unspecified
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|
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| Q06.0 |
Amyelia
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|
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| Q06.1 |
Hypoplasia and dysplasia of spinal cord
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|
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| Q06.2 |
Diastematomyelia
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|
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| Q06.3 |
Other congenital cauda equina malformations
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|
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| Q06.4 |
Hydromyelia
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|
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| Q06.8 |
Other specified congenital malformations of spinal cord
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|
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| Q06.9 |
Congenital malformation of spinal cord, unspecified
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|
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| Q07.00 |
Arnold-Chiari syndrome without spina bifida or hydrocephalus
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|
Billable Code | View Code |
| Q07.01 |
Arnold-Chiari syndrome with spina bifida
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|
Billable Code | View Code |
| Q07.02 |
Arnold-Chiari syndrome with hydrocephalus
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|
Billable Code | View Code |
| Q07.03 |
Arnold-Chiari syndrome with spina bifida and hydrocephalus
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|
Billable Code | View Code |
| Q07.8 |
Other specified congenital malformations of nervous system
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|
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| Q07.9 |
Congenital malformation of nervous system, unspecified
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|
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| Q10.0 |
Congenital ptosis
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|
Billable Code | View Code |
| Q10.1 |
Congenital ectropion
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|
Billable Code | View Code |
| Q10.2 |
Congenital entropion
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|
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| Q10.3 |
Other congenital malformations of eyelid
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|
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| Q10.4 |
Absence and agenesis of lacrimal apparatus
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|
Billable Code | View Code |
| Q10.5 |
Congenital stenosis and stricture of lacrimal duct
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|
Billable Code | View Code |
| Q10.6 |
Other congenital malformations of lacrimal apparatus
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|
Billable Code | View Code |
| Q10.7 |
Congenital malformation of orbit
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|
Billable Code | View Code |
| Q11.0 |
Cystic eyeball
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|
Billable Code | View Code |
| Q11.1 |
Other anophthalmos
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|
Billable Code | View Code |
| Q11.2 |
Microphthalmos
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|
Billable Code | View Code |
| Q11.3 |
Macrophthalmos
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|
Billable Code | View Code |
| Q12.0 |
Congenital cataract
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|
Billable Code | View Code |
| Q12.1 |
Congenital displaced lens
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|
Billable Code | View Code |
| Q12.2 |
Coloboma of lens
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|
Billable Code | View Code |
| Q12.3 |
Congenital aphakia
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|
Billable Code | View Code |
| Q12.4 |
Spherophakia
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|
Billable Code | View Code |
| Q12.8 |
Other congenital lens malformations
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|
Billable Code | View Code |
| Q12.9 |
Congenital lens malformation, unspecified
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|
Billable Code | View Code |
| Q13.0 |
Coloboma of iris
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|
Billable Code | View Code |
| Q13.1 |
Absence of iris
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|
Billable Code | View Code |
| Q13.2 |
Other congenital malformations of iris
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|
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| Q13.3 |
Congenital corneal opacity
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|
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| Q13.4 |
Other congenital corneal malformations
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|
Billable Code | View Code |
| Q13.5 |
Blue sclera
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|
Billable Code | View Code |
| Q13.81 |
Rieger anomaly
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|
Billable Code | View Code |
| Q13.89 |
Other congenital malformations of anterior segment of eye
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|
Billable Code | View Code |
| Q13.9 |
Congenital malformation of anterior segment of eye, unsp
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|
Billable Code | View Code |
| Q14.0 |
Congenital malformation of vitreous humor
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|
Billable Code | View Code |
| Q14.1 |
Congenital malformation of retina
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|
Billable Code | View Code |
| Q14.2 |
Congenital malformation of optic disc
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|
Billable Code | View Code |
| Q14.3 |
Congenital malformation of choroid
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|
Billable Code | View Code |
| Q14.8 |
Other congenital malformations of posterior segment of eye
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|
Billable Code | View Code |
| Q14.9 |
Congenital malformation of posterior segment of eye, unsp
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|
Billable Code | View Code |
| Q15.0 |
Congenital glaucoma
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|
Billable Code | View Code |
| Q15.8 |
Other specified congenital malformations of eye
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|
Billable Code | View Code |
| Q15.9 |
Congenital malformation of eye, unspecified
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|
Billable Code | View Code |
| Q16.0 |
Congenital absence of (ear) auricle
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|
Billable Code | View Code |
| Q16.1 |
Congenital absence, atresia and stricture of auditory canal
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|
Billable Code | View Code |
| Q16.2 |
Absence of eustachian tube
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|
Billable Code | View Code |
| Q16.3 |
Congenital malformation of ear ossicles
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|
Billable Code | View Code |
| Q16.4 |
Other congenital malformations of middle ear
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|
Billable Code | View Code |
| Q16.5 |
Congenital malformation of inner ear
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|
Billable Code | View Code |
| Q16.9 |
Congen malform of ear causing impairment of hearing, unsp
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|
Billable Code | View Code |
| Q17.0 |
Accessory auricle
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|
Billable Code | View Code |
| Q17.1 |
Macrotia
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|
Billable Code | View Code |
| Q17.2 |
Microtia
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|
Billable Code | View Code |
| Q17.3 |
Other misshapen ear
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|
Billable Code | View Code |
| Q17.4 |
Misplaced ear
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|
Billable Code | View Code |
| Q17.5 |
Prominent ear
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|
Billable Code | View Code |
| Q17.8 |
Other specified congenital malformations of ear
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|
Billable Code | View Code |
| Q17.9 |
Congenital malformation of ear, unspecified
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|
Billable Code | View Code |
| Q18.0 |
Sinus, fistula and cyst of branchial cleft
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|
Billable Code | View Code |
| Q18.1 |
Preauricular sinus and cyst
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|
Billable Code | View Code |
| Q18.2 |
Other branchial cleft malformations
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|
Billable Code | View Code |
Chapter Guidelines
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