Z77.40 vs Z87.821
Z77.40 (Contact with and (suspected) exposure to unspecified blast overpressure) compared with Z87.821 (Personal history of retained foreign body fully removed), 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. Z77.40 carries an Excludes2 note covering Z87.821: “retained foreign body fully removed (Z87.821)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| Z77.40Contact with and (suspected) exposure to unspecified blast overpressure | Z87.821Personal history of retained foreign body fully removed | |
|---|---|---|
| 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 | — | Personal history of retained foreign body fully removed is a billable ICD-10-CM diagnosis code (Z87.821). |
| Includes | contact with and (suspected) exposures to potential hazards to health Contact with and (suspected) exposure to blast overpressure NOS | — |
| Code first | — | any follow-up examination after treatment (Z09) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources