Y21.0
⚠ Non-billable
Drowning and submersion while in bathtub, undetermined intent
ICD-10-CM · FY2026 · External Causes of Morbidity
Code
Y21.0
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
External Causes of Morbidity
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Y21.0?
ICD-10-CM code Y21.0 represents Drowning and submersion while in bathtub, undetermined intent. It is a non-billable header code requiring a more specific subcategory in the External Causes of Morbidity chapter, effective October 1, 2025 – September 30, 2026.
Is Y21.0 billable?
No. Y21.0 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Y21.0 in?
Y21.0 belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.
Related codes in the Y21 category
Y21
Drowning and submersion, undetermined intent
Non-billable
Y21.1
Drowning and submersion after fall into bathtub, undetermined intent
Non-billable
Y21.2
Drowning and submersion while in swimming pool, undetermined intent
Non-billable
Y21.3
Drowning and submersion after fall into swimming pool, undetermined intent
Non-billable
Y21.4
Drowning and submersion in natural water, undetermined intent
Non-billable
Y21.8
Other drowning and submersion, undetermined intent
Non-billable
Y21.9
Unspecified drowning and submersion, undetermined intent
Non-billable
Y21.0XXA
Drowning and submersion while in bathtub, undetermined intent, initial encounter
Billable
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