V93.39XA (Fall on board unspecified watercraft, initial encounter) 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.
Not coded here — these two are mutually exclusive.
“military watercraft accident in military or war operations (Y36, Y37.-)”
An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.
Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a
No — do not report together. V93.39XA carries an Excludes1 note covering Y36: “military watercraft accident in military or war operations (Y36, Y37.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
| V93.39XAFall on board unspecified watercraft, initial encounter | Y36Operations of war | |
|---|---|---|
| Billing status | Billable | 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 | Fall on board unspecified watercraft, initial encounter is a billable ICD-10-CM diagnosis code (V93.39A). | 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 V93 | The appropriate 7th character is to be added to each code from category Y36 |
| Includes | Fall on board boat NOS Fall on board ship NOS Fall on board watercraft NOS | 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