Q23.1 Guidelines & Instructional Notes: Congenital insufficiency of aortic valve

Instruction Source: Q23.1

Congenital insufficiency of aortic valve

Instruction Source: Q23

Congenital malformations of aortic and mitral valves

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)