Q21.22

Q21.22: Transitional atrioventricular septal defect

Billable / specific codeICD-10-CMPOA exempt

Q21.22 is a billable, specific ICD-10-CM code for transitional atrioventricular septal defect. It is valid for submission on a claim.

Check Q21.22 with the rest of the claim: free scrubber

Inclusion terms

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

Intermediate atrioventricular canal
Intermediate atrioventricular septal defect
Intermediate endocardial cushion defect
Ostium primum atrial septal defect (type I) with separate atrioventricular valves and a small or restrictive inlet VSD
Transitional atrioventricular canal
Transitional endocardial cushion defect

Excludes1 inherited from the categories above Q21.22

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

Q21.22 is named in 19 Medicare coverage policies: 19 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

Canal›atrioventricular›intermediate
Canal›atrioventricular›transitional
Defect, defective›cushion, endocardial›intermediate
Defect, defective›cushion, endocardial›transitional
Defect, defective›atrioventricular›septal›intermediate
Defect, defective›atrioventricular›septal›transitional
Defect, defective›atrial septal›ostium primum type›with›separate atrioventricular valves›and small or restrictive inlet VSD

Code history

Unchanged in every release from FY2024 to FY2027.