City hall as the place of occurrence of the external cause

This code indicates that a patient's injury or adverse health event occurred specifically within the premises of a city hall building. It identifies the municipal government building as the location where the external cause of the condition took place.

This code is used when documenting injuries sustained by individuals (e.g., employees, visitors, or contractors) while at city hall. Examples include falls on city hall stairs, injuries from equipment malfunctions within the building, or assaults occurring inside the city hall.

• Always use this code as a secondary code, following the primary code for the injury or condition.
• Ensure the medical record explicitly states the incident occurred at "city hall" or a similar municipal government building.
• Do not use this code for incidents occurring on city property outside the city hall building itself (e.g., a city park or public street).