E84.11 vs K56
E84.11 (Meconium ileus in cystic fibrosis) 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 E84.11: “cystic fibrosis with meconium ileus (E84.11)”
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
| E84.11Meconium ileus in cystic fibrosis | K56Paralytic ileus and intestinal obstruction without hernia | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | K00-K95 — Diseases of the Digestive System (K00-K95) |
| Definition | Meconium ileus in cystic fibrosis is a billable ICD-10-CM diagnosis code (E84.11). | Paralytic ileus and intestinal obstruction without hernia is a non-billable ICD-10-CM category code (K56). |
| Includes | mucoviscidosis | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources