ICD-10-CM 2027
ICD-10 code for Dextrotransposition
Discordant ventriculoarterial connection
From the official ICD-10-CM alphabetic index entry “Dextrotransposition, aorta”. Page updated September 29, 2026.
About coding Dextrotransposition
The ICD-10-CM code for Dextrotransposition is Q20.3 (Discordant ventriculoarterial connection).
Within Q20 (congenital malformations of cardiac chambers and connections), Q20.3 is specifically for Discordant ventriculoarterial connection. Related codes cover common arterial trunk (Q20.0), Double outlet right ventricle (Q20.1), Double outlet left ventricle (Q20.2), Double inlet ventricle (Q20.4), Discordant atrioventricular connection (Q20.5), Isomerism of atrial appendages (Q20.6), other congenital malformations of cardiac chambers and connections (Q20.8) and congenital malformation of cardiac chambers and connections, unspecified (Q20.9).
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 306 (Cardiac Congenital and Valvular Disorders with MCC, relative weight 1.546) and DRG 307 (Cardiac Congenital and Valvular Disorders without MCC, relative weight 0.9148), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Dextrotransposition ICD-10 codes
What is the ICD-10 code for Dextrotransposition?
- Q20.3 — Discordant ventriculoarterial connection.
Is Q20.3 billable?
- Yes. Q20.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q20.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q20.3 as a principal diagnosis.
Is Q20.3 a CC or MCC?
- Q20.3 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.