ICD-10 code for vena cava anomaly

The ICD-10-CM code for vena cava anomaly is Q26.9 (Congenital malformation of great vein, unspecified).

Within Q26, choose Q26.9 (Congenital malformation of great vein, unspecified) only when documentation doesn't support a more specific option: congenital stenosis of vena cava (Q26.0), persistent left superior vena cava (Q26.1), total anomalous pulmonary venous connection (Q26.2), partial anomalous pulmonary venous connection (Q26.3), anomalous pulmonary venous connection, unspecified (Q26.4), anomalous portal venous connection (Q26.5), portal vein-hepatic artery fistula (Q26.6) and other congenital malformations of great veins (Q26.8).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 306 (Cardiac Congenital and Valvular Disorders with MCC, relative weight 1.546) and DRG 307 (Cardiac Congenital and Valvular Disorders without MCC, relative weight 0.9148), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.