BB91Level 4

Pulmonary valve insufficiency

**Definition:** Pulmonary valve insufficiency which is an incomplete closure of the pulmonary valve allows blood to return from pulmonary artery into the right ventricle.

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BB91.0Rheumatic pulmonary valve insufficiency

BB91.YOther specified nonrheumatic pulmonary valve insufficiency

BB91.ZPulmonary valve insufficiency, unspecified

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