Z00.0 Encounter for general adult medical examination
The ICD-10-CM code for Encounter for general adult medical examination is Z00.0 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- Z00-Z13: Persons encountering health services for examinations (Z00-Z13)
- Category Z00
- 19 codes (13 billable)
- FY2026 Status
- Stable since FY2024
Inclusion Terms
- Encounter for adult periodic examination (annual) (physical) and any associated laboratory and radiologic examinations
Official Coding Guidelines
General medical exams w/ abnormal findings—Z00.0-/Z00.12-P. Encounters for general medical examinations with abnormal findings The subcategories for encounters for general medical examinations, Z00.0- and encounter for routine child health examination, Z00.12-, provide codes for with and without abnormal findings. Should a general medical examination result in an abnormal finding, the code for general medical examination with abnormal finding should be assigned as the first-listed diagnosis. An examination with abnormal findings refers to a condition/diagnosis that is newly identified or a change in severity of a chronic condition (such as uncontrolled hypertension, or an acute exacerbation of chronic obstructive pulmonary disease) during a routine physical examination. A secondary code for the abnormal finding should also be coded.
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