A04.4 vs A05
A04.4 (Other intestinal Escherichia coli infections) compared with A05 (Other bacterial foodborne intoxications, not elsewhere classified), 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. A04.4 carries an Excludes1 note covering A05: “bacterial foodborne intoxications, NEC (A05.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. A05 carries an Excludes1 note covering A04.4: “Escherichia coli infection (A04.0-A04.4)”
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
| A04.4Other intestinal Escherichia coli infections | A05Other bacterial foodborne intoxications, not elsewhere classified | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) |
| Definition | Other intestinal Escherichia coli infections is a billable ICD-10-CM diagnosis code (A04.4). | Other bacterial foodborne intoxications, not elsewhere classified is a non-billable ICD-10-CM category code (A05). |
| Includes | Escherichia coli enteritis NOS | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources