ICD-10-CM · Chapter 17 · Q00–Q99
Q21.23
Complete atrioventricular septal defect
Congenital malformations, deformations and chromosomal abnormalities
Quick facts
- Code
- Q21.23
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 17 — Congenital malformations, deformations and chromosomal abnormalities
- Category
- Q21 — Congenital malformations of cardiac septa
- Specificity
- 5 characters
How coders use this code
ICD-10-CM Q21.23 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of complete atrioventricular septal defect. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in Q21
- Q21Congenital malformations of cardiac septa
- Q21.0Ventricular septal defect
- Q21.1Atrial septal defect
- Q21.10Atrial septal defect, unspecified
- Q21.11Secundum atrial septal defect
- Q21.12Patent foramen ovale
- Q21.13Coronary sinus atrial septal defect
- Q21.14Superior sinus venosus atrial septal defect
- Q21.15Inferior sinus venosus atrial septal defect
- Q21.16Sinus venosus atrial septal defect, unspecified
- Q21.19Other specified atrial septal defect
- Q21.2Atrioventricular septal defect
- Q21.20Atrioventricular septal defect, unspecified as to partial or complete
- Q21.21Partial atrioventricular septal defect
- Q21.22Transitional atrioventricular septal defect
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