Z57 vs Z91
Z57 (Occupational exposure to risk factors) compared with Z91 (Personal risk factors, not elsewhere classified), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. Z91 carries an Excludes2 note covering Z57: “occupational exposure to risk factors (Z57.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| Z57Occupational exposure to risk factors | Z91Personal risk factors, not elsewhere classified | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header Report instead: Z91.010, Z91.0110, Z91.0111, Z91.0112, Z91.0120 |
| Classification | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Occupational exposure to risk factors is a non-billable ICD-10-CM category code (Z57). | Personal risk factors, not elsewhere classified is a non-billable ICD-10-CM category code (Z91). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources