Is Q20.4 a billable ICD-10 code?

Yes. Q20.4 (Double inlet ventricle) is billable and can be used for insurance claims. Always verify payer-specific requirements.

Q20.4 ✓ Billable

Double inlet ventricle

Q: What is ICD-10 code Q20.4?

ICD-10-CM code Q20.4 stands for "Double inlet ventricle". It is a billable code in the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Congenital Malformations, Deformations and Chromosomal Abnormalities

Code

Q20.4

System

ICD-10-CM

Billable

Yes — valid for submission

Effective

FY2026

Chapter

Congenital Malformations, Deformations and Chromosomal Abnormalities

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code Q20.4?

ICD-10-CM code Q20.4 represents Double inlet ventricle. It is a billable diagnosis code in the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter, effective October 1, 2025 – September 30, 2026.

Is Q20.4 billable?

Yes. Q20.4 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.

What chapter is Q20.4 in?

Q20.4 belongs to the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter (Q00–Q99) of ICD-10-CM.

Related codes in the Q20 category

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 Q20.5 Discordant atrioventricular connection Billable Q20.6 Isomerism of atrial appendages Billable Q20.8 Other congenital malformations of cardiac chambers and connections Billable

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