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Q23

Non-billable

Congenital malformations of aortic and mitral valves

Q23 is the ICD-10-CM code for Congenital malformations of aortic and mitral valves. It is a non-billable category code — use a more specific child code such as Q23.0 for billing.

Status
Header (non-billable)
Chapter
Q00-Q99
Subcodes
7
Edition
FY2026

Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code Q23?
Q23 is the ICD-10-CM code for "Congenital malformations of aortic and mitral valves". It falls under Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities.
Is Q23 a billable code?
No — Q23 is a non-billable header code. Use a more specific child code (such as Q23.0) for billing.
What are the subcodes of Q23?
Q23 has 7 more specific child codes, including Q23.0, Q23.1, Q23.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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