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2025 ICD-10-CM code Y93.H9

This code classifies activities involving exterior property and land maintenance, building, and construction as contributing factors to a health condition.

Y93.H9 is always used as a secondary code; it should never be the only code reported.The primary diagnosis code must accurately reflect the condition.

Medical necessity is established by the presence of a diagnosed condition that is linked to the activity specified by Y93.H9.Documentation must demonstrate a causal relationship between the activity and the patient's condition.

The clinical responsibility lies with the physician or healthcare provider who diagnoses and treats the condition related to the activity coded with Y93.H9. The provider must document the activity, the resulting injury or illness, and the link between them.

IMPORTANT:Consider other codes within the Y93 category to identify a more specific activity if available.If the primary diagnosis is related to an injury, ensure appropriate codes from Chapter 19 (Injury, poisoning and certain other consequences of external causes) are used in conjunction with Y93.H9.

In simple words: This code is used when someone gets hurt or sick while doing something outside, such as working on a house or garden.It's added to the main code that describes the injury or illness.

ICD-10-CM code Y93.H9, "Activity, other involving exterior property and land maintenance, building and construction," is a supplementary code used to indicate the activity of the individual when seeking healthcare for an injury or health condition that resulted from or was contributed to by this activity.This code is used secondarily to a code from another chapter that describes the nature of the condition. It can be used for both acute injuries (Chapter 19) and conditions resulting from long-term effects of an activity.It provides additional information on the cause of the morbidity.

Example 1: A construction worker suffers a heart attack while working on a building site. Y93.H9 would be used as a secondary code along with the code for the heart attack, indicating the activity contributed to the event., A landscaper experiences a back injury while lifting heavy equipment. Y93.H9 would be used as a secondary code in addition to a code from Chapter 19 that reflects the nature of the back injury., A homeowner develops carpal tunnel syndrome due to prolonged periods of gardening and landscaping. Y93.H9 would be secondary to the carpal tunnel syndrome code, denoting the contributing activity.

Detailed documentation is required to support the use of Y93.H9. This should include a clear description of the activity, the date and time of the event, the circumstances leading to the condition, and the link between the activity and the resulting injury or illness. Proper medical documentation of the primary diagnosis is also essential.

** This code is part of the External Causes of Morbidity and Mortality chapter.Always ensure proper documentation to support the use of this secondary code.

** Only Enterprise users with EHR integration can access case-specific answers. Click here to request access.

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