T75.0 vs W94
T75.0 (Effects of lightning) compared with W94 (Exposure to high and low air pressure and changes in air pressure), 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. W94 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 | W94Exposure to high and low air pressure and changes in air pressure | |
|---|---|---|
| Billing status | Non-billable header Report instead: T75.00XA, T75.00XD, T75.00XS, T75.01XA, T75.01XD | Non-billable header Report instead: W94.0XXA, W94.0XXD, W94.0XXS, W94.11XA, W94.11XD |
| 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 high and low air pressure and changes in air pressure is a non-billable ICD-10-CM category code (W94). |
| 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 W94 |
| 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