Y21

Non-Billable
ChapterV00–Y99
Rankcategory
Official Description

Drowning and submersion, undetermined intent

Metadata & Insights
  • Non-billable category (requires more specific sub-code).
  • Chapter 20: External Causes of Morbidity (V00-Y99).

Y21-Y33 Parent Instructions

Includes
  • Undetermined intent is only for use when there is specific documentation in the record that the intent of the injury cannot be determined. If no such documentation is present, code to accidental (unintentional)

Clinical Hierarchy

BillableHas subcodes
CH20External causes of morbidity (V00-Y99)
Y21-Y33Event of undetermined intent (Y21-Y33)
Y21Drowning and submersion, undetermined intentNot billable
Y21.0Drowning and submersion while in bathtub, undetermined intentBillable
Y21.1Drowning and submersion after fall into bathtub, undetermined intentBillable
Y21.2Drowning and submersion while in swimming pool, undetermined intentBillable
Y21.3Drowning and submersion after fall into swimming pool, undetermined intentBillable
Y21.4Drowning and submersion in natural water, undetermined intentBillable
Y21.8Other drowning and submersion, undetermined intentBillable
Y21.9Unspecified drowning and submersion, undetermined intentBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Y21:

blockY21-Y33
Event of undetermined intent (Y21-Y33)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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