ICD-10-CM › V00-Y99 › Y21-Y33 › Y21.9 Unspecified drowning and... › Y21.9XXS

Y21.9XXS

Unspecified drowning and submersion, undetermined intent, sequela

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2007 Added to the draft code set draft Unspecified drowning and submersion, undetermined intent, sequela

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from Y21 Drowning and submersion, undetermined intent

Seventh character required

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

Inherited from the Y21-Y33 section Event of undetermined intent (Y21-Y33)

Also known as

  • 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)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
Y21.9XXA Unspecified drowning and submersion, undetermined intent, initial encounter Valid
Y21.9XXD Unspecified drowning and submersion, undetermined intent, subsequent encounter Valid