Q26: Congenital malformations of great veins

Codes under Q26 (Congenital malformations of great veins). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
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	✓
Q26.4	Anomalous pulmonary venous connection, unspecified	✓
Q26.5	Anomalous portal venous connection	✓
Q26.6	Portal vein-hepatic artery fistula	✓
Q26.8	Other congenital malformations of great veins	✓
Q26.9	Congenital malformation of great vein, unspecified	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

Code the diagnosis right