Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) ICD-10-CM
The Z77–Z99 section covers persons with potential health hazards related to family and personal history and certain conditions influencing health status with 739 ICD-10-CM diagnosis codes, of which 554 are billable in fiscal year 2026. The section is organized into the 23 code ranges listed below.
Code Also
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
Code Ranges in This Section 23 ranges · 739 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the Z77–Z99 Code Range
ICD-10 codes Z77-Z99 cover conditions related to exposures, family and personal history, long-term therapy, artificial openings, transplant status, implants, device presence, postprocedural states, and dependencies. These codes help document ongoing health influences, prior medical events, implant statuses, and risks impacting patient care.
This range includes codes like Z77 that specify exposure to hazardous substances such as arsenic, lead, or asbestos, with synonyms like "exposure to arsenic" or "environmental pollution" guiding coding for suspected environmental contacts. Codes Z78 and Z79 identify asymptomatic or long-term use conditions, for example, "long term use of anticoagulants," "hormonal contraceptives," or "insulin," aiding in recording ongoing treatments. The family and personal history section (Z80-Z87) documents inherited risks and past diseases such as "family history of breast cancer" or "personal history of malignant neoplasm," crucial for preventive care and risk stratification. Artificial opening statuses (Z93) and transplant statuses (Z94) indicate presence of surgical modifications or transplants. Implant presence (Z96) covers orthopedic joints, lenses, neurostimulators, and more. Postprocedural states (Z98) reflect recovery or complications following surgeries, while dependence codes (Z99) capture reliance on devices like ventilators or wheelchairs. This comprehensive chapter guides precise documentation of various health influences beyond active disease.
Questions About This Page
How many codes are in the Z77-Z99 range?
The Z77-Z99 range contains 739 ICD-10-CM diagnosis codes in FY 2026. 554 of them are billable, and the rest are category headers that organize the section.
What conditions does Z77-Z99 cover?
The range covers persons with potential health hazards related to family and personal history and certain conditions influencing health status. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
