K28 vs K91
K28 (Gastrojejunal ulcer) compared with K91 (Intraoperative and postprocedural complications and disorders of digestive system, 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. K91 carries an Excludes2 note covering K28: “gastrojejunal ulcer (K28.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| K28Gastrojejunal ulcer | K91Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | K00-K95 — Diseases of the Digestive System (K00-K95) |
| Definition | Gastrojejunal ulcer is a non-billable ICD-10-CM category code (K28). | Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified is a non-billable ICD-10-CM category code (K91). |
| Includes | anastomotic ulcer (peptic) or erosion gastrocolic ulcer (peptic) or erosion gastrointestinal ulcer (peptic) or erosion gastrojejunal ulcer (peptic) or erosion | — |
| Use additional code | code to identify: alcohol abuse and dependence (F10.-) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources