ICD-10 Q23.81
Billable / SpecificBicuspid aortic valve
About ICD-10-CM Q23.81
ICD-10-CM code Q23.81 represents Bicuspid aortic valve. This is a billable/specific code in the Congenital Malformations chapter (block Q23). The 2026 edition of ICD-10-CM Q23.81 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under Q23.81. Per CMS ICD-10-CM Tabular 2026.
- Congenital bicuspid aortic valve
- Unicuspid (congenital) aortic valve (at birth)
Coding Notes
Code Also
- , if applicable, acquired aortic valve disorders, such as:
- aortic (valve) insufficiency (nonrheumatic) (I35.1)
- aortic (valve) stenosis (nonrheumatic) (I35.0)
- aortic (valve) stenosis with insufficiency (nonrheumatic) (I35.2)
Medicare LCD Coverage for Q23.81
Local Coverage Determinations (LCDs) from CMS MACs that list Q23.81 as a covered diagnosis.
Showing top 10 of 202 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing Q23.81.
5 Medicare
CPT Codes Commonly Billed with Q23.81
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To Q23.81
Other codes in section Q20-Q28 (Congenital malformations of the circulatory system).
ICD-10 Q23.81, Billing FAQ
Is ICD-10 code Q23.81 billable? +
Yes, Q23.81 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to Q23.81? +
ICD-10 Q23.81 includes: Congenital bicuspid aortic valve; Unicuspid (congenital) aortic valve (at birth).
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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