2020 ICD-10-CM Diagnosis Code Y33

Other specified events, undetermined intent

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • Y33 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM Y33 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Y33 - other international versions of ICD-10 Y33 may differ.
ICD-10-CM Coding Rules
  • Y33 describes the circumstance causing an injury, not the nature of the injury.
The following code(s) above Y33 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Y33:
  • V00-Y99
    2020 ICD-10-CM Range V00-Y99

    External causes of morbidity

    Note
    • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.
    External causes of morbidity
  • Y21-Y33
    2020 ICD-10-CM Range Y21-Y33

    Event of undetermined intent

    Applicable To
    • 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)
    Event of undetermined intent
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

External Cause Index entries containing back-references to Y33:
  • Exposure (to) X58
    ICD-10-CM Diagnosis Code X58

    Exposure to other specified factors

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Accident NOS
    • Exposure NOS
    • electric current W86.8
      ICD-10-CM Diagnosis Code W86.8

      Exposure to other electric current

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      Applicable To
      • Exposure to wiring and appliances in or on farm (not farmhouse)
      • Exposure to wiring and appliances outdoors
      • Exposure to wiring and appliances in or on public building
      • Exposure to wiring and appliances in or on residential institutions
      • Exposure to wiring and appliances in or on schools
      • taser W86.8
        ICD-10-CM Diagnosis Code W86.8

        Exposure to other electric current

          2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
        Applicable To
        • Exposure to wiring and appliances in or on farm (not farmhouse)
        • Exposure to wiring and appliances outdoors
        • Exposure to wiring and appliances in or on public building
        • Exposure to wiring and appliances in or on residential institutions
        • Exposure to wiring and appliances in or on schools
        • undeternined intent Y33
  • Injury, injured (accidental(ly)) X58
    ICD-10-CM Diagnosis Code X58

    Exposure to other specified factors

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Accident NOS
    • Exposure NOS
  • Killed, killing (accidentally) X58
    - see also Injury
    ICD-10-CM Diagnosis Code X58

    Exposure to other specified factors

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Accident NOS
    • Exposure NOS
    • self
      • stated as
        • undetermined whether accidental or intentional Y33
  • Undetermined intent (contact) (exposure)
    • specified event NEC Y33

ICD-10-CM Codes Adjacent To Y33
Y30.XXXD Falling, jumping or pushed from a high place, undetermined intent, subsequent encounter
Y30.XXXS Falling, jumping or pushed from a high place, undetermined intent, sequela
Y31 Falling, lying or running before or into moving object, undetermined intent
Y31.XXXA Falling, lying or running before or into moving object, undetermined intent, initial encounter
Y31.XXXD Falling, lying or running before or into moving object, undetermined intent, subsequent encounter
Y31.XXXS Falling, lying or running before or into moving object, undetermined intent, sequela
Y32 Crashing of motor vehicle, undetermined intent
Y32.XXXA Crashing of motor vehicle, undetermined intent, initial encounter
Y32.XXXD Crashing of motor vehicle, undetermined intent, subsequent encounter
Y32.XXXS Crashing of motor vehicle, undetermined intent, sequela
Y33 Other specified events, undetermined intent
Y33.XXXA Other specified events, undetermined intent, initial encounter
Y33.XXXD Other specified events, undetermined intent, subsequent encounter
Y33.XXXS Other specified events, undetermined intent, sequela
Y35 Legal intervention
Y35.0 Legal intervention involving firearm discharge
Y35.00 Legal intervention involving unspecified firearm discharge
Y35.001 Legal intervention involving unspecified firearm discharge, law enforcement official injured
Y35.001A …… initial encounter
Y35.001D …… subsequent encounter
Y35.001S …… sequela

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.