Z13.88 vs Z57
Z13.88 (Encounter for screening for disorder due to exposure to contaminants) compared with Z57 (Occupational exposure to risk factors), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. Z13.88 carries an Excludes1 note covering Z57: “those exposed to contaminants without suspected disorders (Z57.-, Z77.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| Z13.88Encounter for screening for disorder due to exposure to contaminants | Z57Occupational exposure to risk factors | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| 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 | Encounter for screening for disorder due to exposure to contaminants is a billable ICD-10-CM diagnosis code (Z13.88). | Occupational exposure to risk factors is a non-billable ICD-10-CM category code (Z57). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources