Z92.26 vs Z92.859
Z92.26 (Personal history of immune checkpoint inhibitor therapy) compared with Z92.859 (Personal history of cellular therapy, unspecified), 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. Z92.859 carries an Excludes2 note covering Z92.26: “personal history of immune checkpoint inhibitor therapy (Z92.26)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| Z92.26Personal history of immune checkpoint inhibitor therapy | Z92.859Personal history of cellular therapy, unspecified | |
|---|---|---|
| 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 immune checkpoint inhibitor therapy is a billable ICD-10-CM diagnosis code (Z92.26). | Personal history of cellular therapy, unspecified is a billable ICD-10-CM diagnosis code (Z92.859). |
| Includes | Personal history of ICI drug therapy | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources