Is V91 a billable ICD-10-CM code?

No. V91 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does V91 sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Water transport accidents (V90-V94).

What cannot be coded together with V91?

V91 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

V91

V91 — Other injury due to accident to watercraft

Non-billable headerICD-10-CM

V91 is a non-billable header ICD-10-CM code for other injury due to accident to watercraft. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category V91

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

civilian water transport accident involving military watercraft (V94.81-)
military watercraft accident in military or war operations (Y36, Y37.-)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

drowning and submersion due to accident to watercraft (V90.-)

Includes

Conditions this code covers.

any injury except drowning and submersion as a result of an accident to watercraft

Other codes that can never be billed with V91

These codes carry an Excludes1 note pointing at V91. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading V91 alone.

V91.2Fall due to collision between watercraft and other watercraft or other object
V92Drowning and submersion due to accident on board watercraft, without accident to watercraft
V93.0Burn due to localized fire on board watercraft
V93Other injury due to accident on board watercraft, without accident to watercraft
V93.1Other burn on board watercraft
V93.3Fall on board watercraft
V93.4Struck by falling object on board watercraft

Risk adjustment

V91 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead V91

5 child codes. Green means billable.

Questions about V91

Is V91 a billable ICD-10-CM code?: No. V91 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does V91 sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Water transport accidents (V90-V94).
What cannot be coded together with V91?: V91 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.