T75.0 vs W88
T75.0 (Effects of lightning) compared with W88 (Exposure to ionizing radiation), 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. W88 carries an Excludes1 note covering T75.0: “lightning (T75.0-)”
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
| T75.0Effects of lightning | W88Exposure to ionizing radiation | |
|---|---|---|
| Billing status | Non-billable header Report instead: T75.00XA, T75.00XD, T75.00XS, T75.01XA, T75.01XD | Non-billable header Report instead: W88.0XXA, W88.0XXD, W88.0XXS, W88.1XXA, W88.1XXD |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | V00-Y99 — External Causes of Morbidity (V00-Y99) |
| Definition | Effects of lightning is a non-billable ICD-10-CM category code (T75.0). | Exposure to ionizing radiation is a non-billable ICD-10-CM category code (W88). |
| 7th character | The appropriate 7th character is to be added to each code from category T75 | The appropriate 7th character is to be added to each code from category W88 |
| Includes | Struck by lightning | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources