T65 vs T88
T65 (Toxic effect of other and unspecified substances) compared with T88 (Other complications of surgical and medical care, not elsewhere classified), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. T88 carries an Excludes2 note covering T65: “poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. T88 carries an Excludes2 note covering T65: “poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4 or 6)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| T65Toxic effect of other and unspecified substances | T88Other complications of surgical and medical care, not elsewhere classified | |
|---|---|---|
| Billing status | Non-billable header Report instead: T65.0X1A, T65.0X1D, T65.0X1S, T65.0X2A, T65.0X2D | Non-billable header Report instead: T88.0XXA, T88.0XXD, T88.0XXS, T88.1XXA, T88.1XXD |
| 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 other and unspecified substances is a non-billable ICD-10-CM category code (T65). | Other complications of surgical and medical care, not elsewhere classified is a non-billable ICD-10-CM category code (T88). |
| 7th character | The appropriate 7th character is to be added to each code from category T65 | The appropriate 7th character is to be added to each code from category T88 |
| 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) | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources