Post office as the place of occurrence of the external cause

This code identifies a post office as the specific location where an injury or other adverse event occurred. It is used to provide granular detail about the environment in which an external cause of morbidity or mortality took place.

Apply this code when documenting an injury, poisoning, or other external cause that happened within the physical confines of a post office building or its immediate premises. This includes incidents such as slips, falls, assaults, or other accidents occurring while an individual is conducting business at or working within a post office.

• Always use this code as a secondary code, following the primary external cause code (e.g., W01 for fall on same level).
• Ensure the medical record explicitly states the incident occurred at a post office.
• Do not use for incidents occurring in a mail sorting facility or other postal service building that is not a public post office.