ICD-10-CM Y21: Drowning and submersion, undetermined intent

ICD-10-CM Diagnosis Code (2025)

Official Description for Y21

Drowning and submersion, undetermined intent

Coding Notes & Guidelines for Y21

7th Character Guidance

The appropriate 7th character is to be added to each code from category Y21

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for Y21):

Y21.0 - Drowning and submersion while in bathtub, undetermined intent Y21.1 - Drowning and submersion after fall into bathtub, undetermined intent Y21.2 - Drowning and submersion while in swimming pool, undetermined intent Y21.3 - Drowning and submersion after fall into swimming pool, undetermined intent Y21.4 - Drowning and submersion in natural water, undetermined intent Y21.8 - Other drowning and submersion, undetermined intent Y21.9 - Unspecified drowning and submersion, undetermined intent

About ICD-10-CM Code Y21 (Drowning and submersion)

ICD-10-CM code Y21 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM Y21 became effective on October 1, 2024.

This page provides detailed information about Y21 - Drowning and submersion, undetermined intent. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Drowning and submersion related to undetermined intent.