W16.21

Non-billable

Fall in (into) filled bathtub

W16.21 is the ICD-10-CM code for Fall in (into) filled bathtub. It is a non-billable category code — use a more specific child code such as W16.211 for billing.

Status
Header (non-billable)
Chapter
V00-Y99
Parent
W16.2
Subcodes
2
Edition
FY2026

V00-Y99 External causes of morbidity

Excludes1 — not coded here

  • fall into empty bathtub (W18.2)

Frequently asked questions

What is ICD-10 code W16.21?
W16.21 is the ICD-10-CM code for "Fall in (into) filled bathtub". It falls under V00-Y99 External causes of morbidity.
Is W16.21 a billable code?
No — W16.21 is a non-billable header code. Use a more specific child code (such as W16.211) for billing.
What are the subcodes of W16.21?
W16.21 has 2 more specific child codes, including W16.211, W16.212.
What is excluded from W16.21?
Excludes1 (not coded here): fall into empty bathtub (W18.2).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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