Q26.9 Guidelines & Instructional Notes: Congenital malformation of great vein, unspecified

Instruction Source: Q26.9

Congenital malformation of great vein, unspecified

Instruction Source: Q26

Congenital malformations of great veins

Instruction Source: Q20-Q28

Congenital malformations of the circulatory system (Q20-Q28)

Instruction Source: Q00-QA1

Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders

Excludes 2 (Not Included Here)