Q24.2 – Cor triatriatum

ICD-10-CM 2027 diagnosis code · Congenital malformations of the circulatory system

Billable code

ICD-10-CM code Q24.2

Code: Q24.2 (claims format: Q242)
Description: Cor triatriatum
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
Block: Q20-Q28 Congenital malformations of the circulatory system
Parent codes: Q24

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Q24 – Other congenital malformations of heart

Excludes1 (not coded here):

endocardial fibroelastosis (I42.4)

Index terms for Q24.2

Entries in the ICD-10-CM alphabetic index that lead to this code:

Cor, triatriatum, triatrium

Related codes in Q24

Q24.0 – DextrocardiaBillable
Q24.1 – LevocardiaBillable
Q24.3 – Pulmonary infundibular stenosisBillable
Q24.4 – Congenital subaortic stenosisBillable
Q24.5 – Malformation of coronary vesselsBillable
Q24.6 – Congenital heart blockBillable
Q24.8 – Other specified congenital malformations of heartBillable
Q24.9 – Congenital malformation of heart, unspecifiedBillable

Frequently asked questions

What is ICD-10 code Q24.2?

Q24.2 is the ICD-10-CM code for cor triatriatum, in the block Q20-Q28 (Congenital malformations of the circulatory system).

Is Q24.2 a billable code?

Yes. Q24.2 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Q24.2 belong to?

It belongs to category Q24 – Other congenital malformations of heart.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.