T56.81 vs T60.4
T56.81 (Toxic effect of thallium) compared with T60.4 (Toxic effect of rodenticides), 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. T60.4 carries an Excludes1 note covering T56.81: “thallium (T56.81-)”
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
| T56.81Toxic effect of thallium | T60.4Toxic effect of rodenticides | |
|---|---|---|
| Billing status | Non-billable header Report instead: T56.811A, T56.811D, T56.811S, T56.812A, T56.812D | Non-billable header Report instead: T60.4X1A, T60.4X1D, T60.4X1S, T60.4X2A, T60.4X2D |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Toxic effect of thallium is a non-billable ICD-10-CM category code (T56.81). | Toxic effect of rodenticides is a non-billable ICD-10-CM category code (T60.4). |
| 7th character | The appropriate 7th character is to be added to each code from category T56 | The appropriate 7th character is to be added to each code from category T60 |
| Includes | toxic effects of fumes and vapors of metals toxic effects of metals from all sources, except medicinal substances | toxic effect of wood preservatives |
| Use additional code | code to identify any retained metal foreign body, if applicable (Z18.0-, T18.1-) code(s): for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70) | 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