Is W16.721 a billable ICD-10-CM code?

No. W16.721 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does W16.721 sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Slipping, tripping, stumbling and falls (W00-W19).

W16.721

W16.721 — Jumping or diving from boat striking bottom causing drowning and submersion

Non-billable headerICD-10-CM

W16.721 is a non-billable header ICD-10-CM code for jumping or diving from boat striking bottom causing drowning and submersion. 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 W16

A: initial encounter
D: subsequent encounter
S: sequela

Other codes that can never be billed with W16.721

These codes carry an Excludes1 note pointing at W16.721. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading W16.721 alone.

V92Drowning and submersion due to accident on board watercraft, without accident to watercraft

Risk adjustment

W16.721 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.

How W16.721 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to W16.721.

Drowning›following›jump or dive›from boat›striking bottom
Jumped, jumping›from›boat›striking bottom›causing drowning
Striking against›bottom when›diving or jumping into water›from boat›causing drowning

Code to one of these instead W16.721

3 child codes. Green means billable.

Related codes at this level

Codes that share W16.72. If W16.721 is not quite right, the correct code is usually one of these.

W16.722Jumping or diving from boat striking bottom causing other injury

Questions about W16.721

Is W16.721 a billable ICD-10-CM code?: No. W16.721 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does W16.721 sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Slipping, tripping, stumbling and falls (W00-W19).