Y04 vs Y36
Y04 (Assault by bodily force) compared with Y36 (Operations of war), 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. Y04 carries an Excludes1 note covering Y36: “injuries due to operations of war (Y36.-)”
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
| Y04Assault by bodily force | Y36Operations of war | |
|---|---|---|
| Billing status | Non-billable header Report instead: Y04.0XXA, Y04.0XXD, Y04.0XXS, Y04.1XXA, Y04.1XXD | Non-billable header Report instead: Y36.000A, Y36.000D, Y36.000S, Y36.001A, Y36.001D |
| Classification | V00-Y99 — External Causes of Morbidity (V00-Y99) | V00-Y99 — External Causes of Morbidity (V00-Y99) |
| Definition | Assault by bodily force is a non-billable ICD-10-CM category code (Y04). | Operations of war is a non-billable ICD-10-CM category code (Y36). |
| 7th character | The appropriate 7th character is to be added to each code from category Y04 | The appropriate 7th character is to be added to each code from category Y36 |
| Includes | homicide injuries inflicted by another person with intent to injure or kill, by any means | injuries to military personnel and civilians caused by war, civil insurrection, and peacekeeping missions |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources