T86.91 vs Z93
T86.91 (Unspecified transplanted organ and tissue rejection) compared with Z93 (Artificial opening status), 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. T86.91 carries an Excludes2 note covering Z93: “artificial opening status (Z93.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| T86.91Unspecified transplanted organ and tissue rejection | Z93Artificial opening status | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Unspecified transplanted organ and tissue rejection is a billable ICD-10-CM diagnosis code (T86.91). | Artificial opening status is a non-billable ICD-10-CM category code (Z93). |
| Use additional code | code to identify other transplant complications, such as: graft-versus-host disease (D89.81-) malignancy associated with organ transplant (C80.2) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources