ICDcodes.org
FY2027

W16.521 — Jumping or diving into swimming pool striking bottom causing drowning and submersion

Not billable

Is W16.521 billable?

No — W16.521 is a non-billable header code. W16.521 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath W16.521.

W16.521 at a glance

CodeW16.521
DescriptionJumping or diving into swimming pool striking bottom causing drowning and submersion
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

How is W16.521 listed in the External Cause Index?

These are the routes through the External Cause of Injuries Index that lead to W16.521 — how the injury happened, rather than what the injury was.

  • Striking against › bottom when › diving or jumping into water › swimming pool › causing drowning
  • Drowning › following › jump or dive › into › swimming-pool › striking › bottom (accidental)
  • Drowning › in › swimming-pool › following › dive or jump › striking › bottom (accidental)
  • Jumped, jumping › into water › in › swimming pool › striking › bottom › causing drowning

Excludes1 — never code together

The conditions below can never be reported together with W16.521 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • drowning and submersion while in swimming pool without jumping or diving (W67)

Excludes1 — never code together — inherited from W00-W19

The conditions below can never be reported together with W16.521 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • assault involving a fall (Y01-Y02)
  • fall from animal (V80.-)
  • fall (in) (from) machinery (in operation) (W28-W31)
  • fall (in) (from) transport vehicle (V01-V99)
  • intentional self-harm involving a fall (X80-X81)

Excludes1 — never code together — inherited from W16

The conditions below can never be reported together with W16.521 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • 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 — inherited from W00-W19

The conditions below are not part of W16.521, but a patient may have both at the same time. When documentation supports it, W16.521 and the excluded code may both be reported.

  • at risk for fall (history of fall) Z91.81
  • fall (in) (from) burning building (X00.-)
  • fall into fire (X00-X04, X08)

Excludes2 — not included here — inherited from W16

The conditions below are not part of W16.521, but a patient may have both at the same time. When documentation supports it, W16.521 and the excluded code may both be reported.

  • striking or hitting diving board (W21.4)

What codes fall under W16.521? (3)

How long has W16.521 existed?

W16.521 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the W16.52 family? (1)