Is Q23.81 a billable ICD-10-CM code?

Yes. Q23.81 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Q23.81 sit in the tabular list?

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of the circulatory system (Q20-Q28).

Q23.81

Q23.81 — Bicuspid aortic valve

Billable / specific codeICD-10-CMPOA exempt

Q23.81 is a billable, specific ICD-10-CM code for bicuspid aortic valve. It is valid for submission on a claim.

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

, 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)

Inclusion terms

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

Congenital bicuspid aortic valve
Unicuspid (congenital) aortic valve (at birth)

Risk adjustment

Q23.81 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

Q23.81 is named in 18 Medicare coverage policies — 18 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
A56451Billing and Coding: Cardiac Computed Tomography (CCT) and Coronary Computed Tomography Angiography (CCTA)
A56476Billing and Coding: Cardiac Radionuclide Imaging

How Q23.81 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Q23.81.

Bicuspid aortic valve(at birth) (congenital)
Unicuspid aortic valve(at birth) (congenital)
Anomaly, anomalous›heart›valve NEC›aortic›bicuspid valve

Related codes at this level

Codes that share Q23.8. If Q23.81 is not quite right, the correct code is usually one of these.

Questions about Q23.81

Is Q23.81 a billable ICD-10-CM code?: Yes. Q23.81 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Q23.81 sit in the tabular list?: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of the circulatory system (Q20-Q28).