Z77 Other contact with and (suspected) exposures hazardous to health
The ICD-10-CM code for Other contact with and (suspected) exposures hazardous to health is Z77 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- Z77-Z99: Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
- Category Z77
- 34 codes (24 billable)
- FY2026 Status
- Stable since FY2024
Official Coding Guidelines
Categories of Z Codes—Contact/Exposure (Z20, Z77)c. Categories of Z Codes 1) Contact/Exposure Category Z20 indicates contact with, and suspected exposure to, communicable diseases. These codes are for patients who are suspected to have been exposed to a disease by close personal contact with an infected individual or are in an area where a disease is epidemic. Category Z77, Other contact with and (suspected) exposures hazardous to health, indicates contact with and suspected exposures hazardous to health. Contact/exposure codes may be used as a first-listed code to explain an encounter for testing, or, more commonly, as a secondary code to identify a potential risk.
Used with any code in range A00.0-T88.9, Z00-Z991) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026