ICD-10-CM FY2027 diagnosis code

Y21.4XXS: Drowning and submersion in natural water, undetermined intent, sequela

Billable codeValid for dates of service October 1, 2026 to September 30, 2027

Y21.4XXS is a billable ICD-10-CM diagnosis code for drowning and submersion in natural water, undetermined intent, sequela. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.

Y21.4XXS questions

Is Y21.4XXS a billable code?

Yes. Y21.4XXS is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.

What does Y21.4XXS mean?

Y21.4XXS is the ICD-10-CM code for Drowning and submersion in natural water, undetermined intent, sequela. It is in chapter 21, External causes of morbidity (V00-Y99).

Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.