W16.721A Jumping or diving from boat striking bottom causing drowning and submersion, initial encounter

Billable ICD-10-CM code, FY2026.

Built from W16.721 with 7th character A (initial encounter).

Applies from W16 Fall, jump or diving into water

Excludes1 (never code together)

• accidental non-watercraft drowning and submersion not involving fall (W65-W74)
• effects of air pressure from diving (W94.-)
• fall into water from watercraft (V90-V94)
• hitting an object or against bottom when falling from watercraft (V94.0)

Excludes2 (not included here)

• striking or hitting diving board (W21.4)

7th character note

• The appropriate 7th character is to be added to each code from category W16

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from W16.7 Jumping or diving from boat

Excludes1 (never code together)

• Fall from boat into water -see watercraft accident (V90-V94)

Code annotations containing back-references to W16.721A

Back-references to W16.721

• Type 1 Excludes: V92 Drowning and submersion due to accident on board watercraft, without accident to watercraft ("drowning or submersion of diver who voluntarily jumps from boat not involved in an accident (W16.711, W16.721)")

Back-references to W16

• Type 1 Excludes: V90 Drowning and submersion due to accident to watercraft ("fall into water not from watercraft (W16.-)")
• Type 1 Excludes: V92 Drowning and submersion due to accident on board watercraft, without accident to watercraft ("fall into water without watercraft (W16.-)")
• Use Additional: W21.4 Striking against diving board ("code for subsequent falling into water, if applicable (W16.-)")

Diagnosis Index entries for W16.721A

• Drowning (accidental) › following › jump or dive › from boat › striking bottom
• Jumped, jumping › from › boat (into water) voluntarily, without accident (to or on boat) › striking bottom › causing drowning
• Striking against › bottom when › diving or jumping into water (in) › from boat › causing drowning

Nearby codes

• W16.712A Jumping or diving from boat striking water surface causing other injury, initial encounter
• W16.712D Jumping or diving from boat striking water surface causing other injury, subsequent encounter
• W16.712S Jumping or diving from boat striking water surface causing other injury, sequela
• W16.72 Jumping or diving from boat striking bottom
• W16.721 Jumping or diving from boat striking bottom causing drowning and submersion
• W16.721A Jumping or diving from boat striking bottom causing drowning and submersion, initial encounter (this code)
• W16.721D Jumping or diving from boat striking bottom causing drowning and submersion, subsequent encounter
• W16.721S Jumping or diving from boat striking bottom causing drowning and submersion, sequela
• W16.722 Jumping or diving from boat striking bottom causing other injury
• W16.722A Jumping or diving from boat striking bottom causing other injury, initial encounter
• W16.722D Jumping or diving from boat striking bottom causing other injury, subsequent encounter