ICDwise
Q00–Q99

Congenital Malformations, Deformations and Chromosomal Abnormalities

Down syndrome, congenital heart defects

1,086 codes · FY2026 · ICD-10-CM · Page 3 of 22

Q16.2 Absence of eustachian tube Billable Q16.3 Congenital malformation of ear ossicles Billable Q16.4 Other congenital malformations of middle ear Billable Q16.5 Congenital malformation of inner ear Billable Q16.9 Congenital malformation of ear causing impairment of hearing, unspecified Billable Q17 Other congenital malformations of ear Non-billable Q17.0 Accessory auricle Billable Q17.1 Macrotia Billable Q17.2 Microtia Billable Q17.3 Other misshapen ear Billable Q17.4 Misplaced ear Billable Q17.5 Prominent ear Billable Q17.8 Other specified congenital malformations of ear Billable Q17.9 Congenital malformation of ear, unspecified Billable Q18 Other congenital malformations of face and neck Non-billable Q18.0 Sinus, fistula and cyst of branchial cleft Billable Q18.1 Preauricular sinus and cyst Billable Q18.2 Other branchial cleft malformations Billable Q18.3 Webbing of neck Billable Q18.4 Macrostomia Billable Q18.5 Microstomia Billable Q18.6 Macrocheilia Billable Q18.7 Microcheilia Billable Q18.8 Other specified congenital malformations of face and neck Billable Q18.9 Congenital malformation of face and neck, unspecified Billable Q20 Congenital malformations of cardiac chambers and connections Non-billable Q20.0 Common arterial trunk Billable Q20.1 Double outlet right ventricle Billable Q20.2 Double outlet left ventricle Billable Q20.3 Discordant ventriculoarterial connection Billable Q20.4 Double inlet ventricle Billable Q20.5 Discordant atrioventricular connection Billable Q20.6 Isomerism of atrial appendages Billable Q20.8 Other congenital malformations of cardiac chambers and connections Billable Q20.9 Congenital malformation of cardiac chambers and connections, unspecified Billable Q21 Congenital malformations of cardiac septa Non-billable Q21.0 Ventricular septal defect Billable Q21.1 Atrial septal defect Non-billable Q21.10 Atrial septal defect, unspecified Billable Q21.11 Secundum atrial septal defect Billable Q21.12 Patent foramen ovale Billable Q21.13 Coronary sinus atrial septal defect Billable Q21.14 Superior sinus venosus atrial septal defect Billable Q21.15 Inferior sinus venosus atrial septal defect Billable Q21.16 Sinus venosus atrial septal defect, unspecified Billable Q21.19 Other specified atrial septal defect Billable Q21.2 Atrioventricular septal defect Non-billable Q21.20 Atrioventricular septal defect, unspecified as to partial or complete Billable Q21.21 Partial atrioventricular septal defect Billable Q21.22 Transitional atrioventricular septal defect Billable

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