T86.91 vs Z43
T86.91 (Unspecified transplanted organ and tissue rejection) compared with Z43 (Encounter for attention to artificial openings), 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 Z43: “closure of external stoma (Z43.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| T86.91Unspecified transplanted organ and tissue rejection | Z43Encounter for attention to artificial openings | |
|---|---|---|
| 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). | Encounter for attention to artificial openings is a non-billable ICD-10-CM category code (Z43). |
| Includes | — | closure of artificial openings passage of sounds or bougies through artificial openings reforming artificial openings removal of catheter from artificial openings |
| 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