V93.50XS vs V94.81

V93.50XS (Explosion on board merchant ship, sequela) compared with V94.81 (Water transport accident involving military watercraft), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Relationship

Conflict

Excludes1 conflict

V93.50XS

Explosion on board merchant ship, sequela

↔

V94.81

Water transport accident involving military watercraft

Not coded here — these two are mutually exclusive.

“civilian water transport accident involving military watercraft (V94.81-)”

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

Can these codes be reported together?

No — do not report together. V93.50XS carries an Excludes1 note covering V94.81: “civilian water transport accident involving military watercraft (V94.81-)”

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

	V93.50XSExplosion on board merchant ship, sequela	V94.81Water transport accident involving military watercraft
Billing status	Billable	Non-billable header
Classification	V00-Y99 — External Causes of Morbidity (V00-Y99)	V00-Y99 — External Causes of Morbidity (V00-Y99)
Definition	Explosion on board merchant ship, sequela is a billable ICD-10-CM diagnosis code (V93.50S).	Water transport accident involving military watercraft is a non-billable ICD-10-CM category code (V94.81).
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 V94

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources