K27 vs K63.3
K27 (Peptic ulcer, site unspecified) compared with K63.3 (Ulcer of intestine), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. K63.3 carries an Excludes1 note covering K27: “peptic ulcer, site unspecified (K27.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| K27Peptic ulcer, site unspecified | K63.3Ulcer of intestine | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | K00-K95 — Diseases of the Digestive System (K00-K95) |
| Definition | Peptic ulcer, site unspecified is a non-billable ICD-10-CM category code (K27). | Ulcer of intestine is a billable ICD-10-CM diagnosis code (K63.3). |
| Includes | gastroduodenal ulcer NOS peptic ulcer NOS | Primary ulcer of small intestine |
| 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