Z57.31 vs Z77.22
Z57.31 (Occupational exposure to environmental tobacco smoke) compared with Z77.22 (Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)), 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. Z57.31 carries an Excludes2 note covering Z77.22: “exposure to environmental tobacco smoke (Z77.22)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. Z77.22 carries an Excludes2 note covering Z57.31: “occupational exposure to environmental tobacco smoke (Z57.31)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. Z77.22 carries an Excludes2 note covering Z57.31: “occupational exposure to risk factors (Z57.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| Z57.31Occupational exposure to environmental tobacco smoke | Z77.22Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic) | |
|---|---|---|
| Billing status | Billable | Billable |
| 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 environmental tobacco smoke is a billable ICD-10-CM diagnosis code (Z57.31). | Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic) is a billable ICD-10-CM diagnosis code (Z77.22). |
| Includes | — | contact with and (suspected) exposures to potential hazards to health Exposure to second hand tobacco smoke (acute) (chronic) Passive smoking (acute) (chronic) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources