Q26
Congenital malformations of great veins
Q26 is a non-billable ICD-10-CM code category for congenital malformations of great veins. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are Q26.0 Congenital stenosis of vena cava, Q26.1 Persistent left superior vena cava, Q26.2 Total anomalous pulmonary venous connection, Q26.3 Partial anomalous pulmonary venous connection and 5 more. Its coding notes include 1 Excludes2 entry.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Chapter 17 codes can be used for life. Manifestations that are an inherent part of a specifically coded anomaly are not coded separately. A corrected malformation is reported with a personal history code.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- inborn errors of metabolism (E70-E88)
Notes
Also from chapter/block level (1 note)
- Codes from this chapter are not for use on maternal records
More specific codes under Q26 9
- Q26.0Congenital stenosis of vena cavaBillable
- Q26.1Persistent left superior vena cavaBillable
- Q26.2Total anomalous pulmonary venous connectionBillable
- Q26.3Partial anomalous pulmonary venous connectionBillable
- Q26.4Anomalous pulmonary venous connection, unspecifiedBillable
- Q26.5Anomalous portal venous connectionBillable
- Q26.6Portal vein-hepatic artery fistulaBillable
- Q26.8Other congenital malformations of great veinsBillable
- Q26.9Congenital malformation of great vein, unspecifiedBillable