Q26.9 – Congenital malformation of great vein, unspecified

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

Billable code

ICD-10-CM code Q26.9

Code: Q26.9 (claims format: Q269)
Description: Congenital malformation of great vein, unspecified
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: Q26

Notes for Q26.9

Applicable to:

Congenital anomaly of vena cava (inferior) (superior) NOS

Index terms for Q26.9

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

Related codes in Q26

Q26.0 – Congenital stenosis of vena cavaBillable
Q26.1 – Persistent left superior vena cavaBillable
Q26.2 – Total anomalous pulmonary venous connectionBillable
Q26.3 – Partial anomalous pulmonary venous connectionBillable
Q26.4 – Anomalous pulmonary venous connection, unspecifiedBillable
Q26.5 – Anomalous portal venous connectionBillable
Q26.6 – Portal vein-hepatic artery fistulaBillable
Q26.8 – Other congenital malformations of great veinsBillable

Frequently asked questions

What is ICD-10 code Q26.9?

Q26.9 is the ICD-10-CM code for congenital malformation of great vein, unspecified, in the block Q20-Q28 (Congenital malformations of the circulatory system).

Is Q26.9 a billable code?

Yes. Q26.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Q26.9 belong to?

It belongs to category Q26 – Congenital malformations of great veins.

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.