K91.1 vs T85.89
K91.1 (Postgastric surgery syndromes) compared with T85.89 (Other specified complication of internal prosthetic devices, implants and grafts, not elsewhere classified), 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. T85.89 carries an Excludes2 note covering K91.1: “postgastric surgery syndromes (K91.1)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| K91.1Postgastric surgery syndromes | T85.89Other specified complication of internal prosthetic devices, implants and grafts, not elsewhere classified | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Postgastric surgery syndromes is a billable ICD-10-CM diagnosis code (K91.1). | Other specified complication of internal prosthetic devices, implants and grafts, not elsewhere classified is a non-billable ICD-10-CM category code (T85.89). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T85 |
| Includes | Dumping syndrome Postgastrectomy syndrome Postvagotomy syndrome | Erosion or breakdown of subcutaneous device pocket |
| Use additional code | — | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources