# Pulmonary embolism

<mark style="color:$danger;">**This Editorial Guide is used for Education Purposes Only. It is used in the Authoring Courses and Certifications. It is based on the January 2026 Editorial Guide.**</mark>

Pulmonary embolus (PE) refers to obstruction of the pulmonary artery or one of its branches by material (e.g. thrombus, tumor, air, or fat) that originated elsewhere in the body. When modeling embolism disorder concepts with pulmonary in the FSN, the Finding site is 782966009 |Structure of artery of pulmonary circulation (body structure)|.

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