A05 vs T61
A05 (Other bacterial foodborne intoxications, not elsewhere classified) compared with T61 (Toxic effect of noxious substances eaten as seafood), 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. A05 carries an Excludes1 note covering T61: “toxic effect of noxious foodstuffs (T61-T62)”
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. T61 carries an Excludes1 note covering A05: “bacterial foodborne 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 | T61Toxic effect of noxious substances eaten as seafood | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header Report instead: T61.01XA, T61.01XD, T61.01XS, T61.02XA, T61.02XD |
| 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). | Toxic effect of noxious substances eaten as seafood is a non-billable ICD-10-CM category code (T61). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T61 |
| Use additional code | — | code(s): for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70) personal history of foreign body fully removed (Z87.821) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources