1. Q26 Congenital malformations of great veins

    1. Q26.0 Congenital stenosis of vena cava

      Inclusion term(s):

      • Congenital stenosis of vena cava (inferior)(superior)
    2. Q26.1 Persistent left superior vena cava

    3. Q26.2 Total anomalous pulmonary venous connection

      Inclusion term(s):

      • Total anomalous pulmonary venous return [TAPVR], subdiaphragmatic
      • Total anomalous pulmonary venous return [TAPVR], supradiaphragmatic
    4. Q26.3 Partial anomalous pulmonary venous connection

      Inclusion term(s):

      • Partial anomalous pulmonary venous return
    5. Q26.4 Anomalous pulmonary venous connection, unspecified

    6. Q26.5 Anomalous portal venous connection

    7. Q26.6 Portal vein-hepatic artery fistula

    8. Q26.8 Other congenital malformations of great veins

      Inclusion term(s):

      • Absence of vena cava (inferior) (superior)
      • Azygos continuation of inferior vena cava
      • Persistent left posterior cardinal vein
      • Scimitar syndrome
    9. Q26.9 Congenital malformation of great vein, unspecified

      Inclusion term(s):

      • Congenital anomaly of vena cava (inferior) (superior) NOS
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.