Is Q24 a billable ICD-10-CM code?

No. Q24 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Q24 sit in the tabular list?

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

What cannot be coded together with Q24?

Q24 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Q24

Q24 — Other congenital malformations of heart

Non-billable headerICD-10-CM

Q24 is a non-billable header ICD-10-CM code for other congenital malformations of heart. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

endocardial fibroelastosis (I42.4)

Other codes that can never be billed with Q24

These codes carry an Excludes1 note pointing at Q24. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q24 alone.

Q23.0Congenital stenosis of aortic valve
Q28Other congenital malformations of circulatory system
Q89.3Situs inversus
I25.41Coronary artery aneurysm
I38Endocarditis, valve unspecified

Risk adjustment

Q24 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.

Code to one of these instead Q24

9 child codes. Green means billable.

Questions about Q24

Is Q24 a billable ICD-10-CM code?: No. Q24 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Q24 sit in the tabular list?: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations of the circulatory system (Q20-Q28).
What cannot be coded together with Q24?: Q24 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.