Q21.23

Q21.23: Complete atrioventricular septal defect

Billable / specific codeICD-10-CMPOA exempt

Q21.23 is a billable, specific ICD-10-CM code for complete atrioventricular septal defect. It is valid for submission on a claim.

Check Q21.23 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Common atrioventricular canal
Common atrioventricular septal defect
Common endocardial cushion defect
Ostium primum atrial septal defect (type I) with common atrioventricular valve and a moderate or larger inlet VSD

Excludes1 inherited from the categories above Q21.23

A category’s note binds every code beneath it.

Written on Q21: Congenital malformations of cardiac septa

acquired cardiac septal defect (I51.0)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

Q21.23 is named in 20 Medicare coverage policies: 20 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
A52868Billing and Coding: Transesophageal Echocardiography (TEE)
A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
A56451Billing and Coding: Cardiac Computed Tomography (CCT) and Coronary Computed Tomography Angiography (CCTA)

Alphabetic index entries that lead here

Common›atrioventricular canal
Ostium›atrioventriculare commune
Canal›atrioventricular›common
Defect, defective›cushion, endocardial›common
Persistence, persistent›ostium›atrioventriculare commune
Defect, defective›atrioventricular›septal›common
Defect, defective›atrioventricular›septal›complete
Defect, defective›atrial septal›ostium primum type›with›common atrioventricular valves and moderate or larger inlet VSD

Code history

Unchanged in every release from FY2024 to FY2027.