K55.1 vs K56
K55.1 (Chronic vascular disorders of intestine) compared with K56 (Paralytic ileus and intestinal obstruction without hernia), 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. K56 carries an Excludes1 note covering K55.1: “ischemic stricture of intestine (K55.1)”
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
| K55.1Chronic vascular disorders of intestine | K56Paralytic ileus and intestinal obstruction without hernia | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | K00-K95 — Diseases of the Digestive System (K00-K95) |
| Definition | Chronic vascular disorders of intestine is a billable ICD-10-CM diagnosis code (K55.1). | Paralytic ileus and intestinal obstruction without hernia is a non-billable ICD-10-CM category code (K56). |
| Includes | Chronic ischemic colitis Chronic ischemic enteritis Chronic ischemic enterocolitis Ischemic stricture of intestine | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources