A05 vs T78.19XS
A05 (Other bacterial foodborne intoxications, not elsewhere classified) compared with T78.19XS (Other adverse food reactions, not elsewhere classified, sequela), 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. T78.19XS carries an Excludes1 note covering A05: “bacterial food borne intoxications (A05.-)”
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
| A05Other bacterial foodborne intoxications, not elsewhere classified | T78.19XSOther adverse food reactions, not elsewhere classified, sequela | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Other bacterial foodborne intoxications, not elsewhere classified is a non-billable ICD-10-CM category code (A05). | Other adverse food reactions, not elsewhere classified, sequela is a billable ICD-10-CM diagnosis code (T78.19S). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T78 |
| Use additional code | — | code to identify the type of reaction, if applicable |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources