In simple words: This code indicates that the patient's visit is related to an injury or illness that happened while they were involved in building or construction work. It's used to give extra information about the cause, but doesn't describe the injury itself.

This code describes the circumstance of building and construction activity causing or contributing to an injury or health condition, not the nature of the injury itself.It should be used as a secondary code to a code from another chapter indicating the nature of the condition, most often Chapter 19 (Injury, poisoning and certain other consequences of external causes).

Example 1: A construction worker falls from scaffolding and breaks their leg. The primary code would be for the fracture (e.g., S82.401A), and Y93.H3 would be a secondary code indicating the activity (building and construction) associated with the injury., A patient experiences a heart attack while shoveling concrete at a construction site.The primary code would be for the myocardial infarction (e.g., I21.9), and Y93.H3 would be secondary, providing context related to the activity., A construction worker develops contact dermatitis after handling cement.The primary code would describe the dermatitis (e.g., L24.0), with Y93.H3 added to indicate that the exposure to the irritant occurred at the building/construction worksite.

Documentation should clearly link the patient's injury or health condition to the building and construction activity. The specific activity should be documented, not just the patient's occupation.

** This code captures the activity the patient was undertaking at the time of the incident.It does not specify whether the patient was working professionally or as a hobbyist/DIYer, or their employment status at the construction/building worksite.For example, a volunteer helping build a house could also be assigned this code if they received an injury or adverse health effect from their participation in the activity.