W16.221S — Fall in (into) bucket of water causing drowning and submersion, sequela
Is W16.221S billable?
Yes — W16.221S is billable for FY2027. W16.221S is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. W16.221S may be submitted for encounters from October 1, 2026 through September 30, 2027.
W16.221S at a glance
| Code | W16.221S |
|---|---|
| Description | Fall in (into) bucket of water causing drowning and submersion, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in W16.221S?
In W16.221S, the 7th character S means sequela. The 7th character is required for W16.221S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is W16.221S listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under W16.221, the nearest indexed parent of W16.221S. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Drowning › following › fall › into › bucket (accidental)
- Fall, falling › into › water › in › bucket › causing drowning (accidental)
- Fall, falling › into › water › in › utility bucket › causing drowning (accidental)
Excludes1 — never code together — inherited from W00-W19
The conditions below can never be reported together with W16.221S on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from W16
The conditions below can never be reported together with W16.221S on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from W00-W19
The conditions below are not part of W16.221S, but a patient may have both at the same time. When documentation supports it, W16.221S and the excluded code may both be reported.
Excludes2 — not included here — inherited from W16
The conditions below are not part of W16.221S, but a patient may have both at the same time. When documentation supports it, W16.221S and the excluded code may both be reported.
- striking or hitting diving board (W21.4)
How long has W16.221S existed?
W16.221S 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.