Y21.4XXSBillable
Drowning and submersion in natural water, undetermined intent, sequela
Short description: Drown in natural water, undetermined intent, sequela
- Chapter
- 20. External causes of morbidity
- Category
- Y21
- Effective date
- October 1, 2026
Related codes in category Y21
Y21Drowning and submersion, undetermined intentY21.0Drown while in bathtub, undetermined intentY21.0XXADrown while in bathtub, undetermined intent, initYesY21.0XXDDrown while in bathtub, undetermined intent, subsYesY21.0XXSDrown while in bathtub, undetermined intent, sequelaYesY21.1Drown after fall into bathtub, undetermined intentY21.1XXADrown after fall into bathtub, undetermined intent, initYesY21.1XXDDrown after fall into bathtub, undetermined intent, subsYesY21.1XXSDrown after fall into bathtub, undetermined intent, sequelaYesY21.2Drown while in swimming pool, undetermined intentY21.2XXADrown while in swimming pool, undetermined intent, initYesY21.2XXDDrown while in swimming pool, undetermined intent, subsYes
Frequently asked questions
What is ICD-10 code Y21.4XXS?
Y21.4XXS is an ICD-10-CM diagnosis code for Drowning and submersion in natural water, undetermined intent, sequela.
Is Y21.4XXS a billable code?
Yes. Y21.4XXS is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is Y21.4XXS in?
Y21.4XXS falls under Chapter 20: External causes of morbidity.
When did Y21.4XXS become effective?
Y21.4XXS has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Y21.4XXS?
Y21.4XXS belongs to category Y21, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.