W16.321A Fall into other water striking bottom causing drowning and submersion, initial encounter

Billable ICD-10-CM code, FY2026.

Built from W16.321 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 W16.3 Fall into other water

Applicable to

• Fall into fountain
• Fall into reservoir

Applies from W16.321 Fall into other water striking bottom causing drowning and submersion

Excludes1 (never code together)

• drowning and submersion while in other water without fall (W73)

Code annotations containing back-references to W16.321A

Back-references to W16.321

• Type 1 Excludes: W73 Other specified cause of accidental non-transport drowning and submersion ("accidental drowning and submersion due to fall into other water (W16.311, W16.321, W16.331)")

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 W16.321A

• Drowning (accidental) › following › fall › into › water NOS › specified NEC › striking › bottom
• Drowning (accidental) › in › specified place NEC › following › fall › striking › bottom
• Fall, falling (accidental) › into › water › in › specified water NEC › striking › bottom › causing drowning
• Striking against › bottom when › falling into water (in) › causing drowning
• Striking against › bottom when › falling into water (in) › specified NEC › causing drowning

Nearby codes

• W16.312A Fall into other water striking water surface causing other injury, initial encounter
• W16.312D Fall into other water striking water surface causing other injury, subsequent encounter
• W16.312S Fall into other water striking water surface causing other injury, sequela
• W16.32 Fall into other water striking bottom
• W16.321 Fall into other water striking bottom causing drowning and submersion
• W16.321A Fall into other water striking bottom causing drowning and submersion, initial encounter (this code)
• W16.321D Fall into other water striking bottom causing drowning and submersion, subsequent encounter
• W16.321S Fall into other water striking bottom causing drowning and submersion, sequela
• W16.322 Fall into other water striking bottom causing other injury
• W16.322A Fall into other water striking bottom causing other injury, initial encounter
• W16.322D Fall into other water striking bottom causing other injury, subsequent encounter