2020 ICD-10-CM Diagnosis Code Y04.2

Assault by strike against or bumped into by another person

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • Y04.2 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 Y04.2 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Y04.2 - other international versions of ICD-10 Y04.2 may differ.
ICD-10-CM Coding Rules
  • Y04.2 describes the circumstance causing an injury, not the nature of the injury.
The following code(s) above Y04.2 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 Y04.2:
  • 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
  • X92-Y09
    2020 ICD-10-CM Range X92-Y09

    Assault

    Includes
    • homicide
    • injuries inflicted by another person with intent to injure or kill, by any means
    Type 1 Excludes
    • injuries due to legal intervention (Y35.-)
    • injuries due to operations of war (Y36.-)
    • injuries due to terrorism (Y38.-)
    Assault
  • Y04
    ICD-10-CM Diagnosis Code Y04

    Assault by bodily force

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Assault by bodily force
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
Code annotations containing back-references to Y04.2:
  • Type 1 Excludes: W51
    ICD-10-CM Diagnosis Code W51

    Accidental striking against or bumped into by another person

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • assault by striking against or bumping into by another person (Y04.2)
    • fall due to collision with another person (W03)

External Cause Index entries containing back-references to Y04.2:
  • Assault (homicidal) (by) (in) Y09
    ICD-10-CM Diagnosis Code Y09

    Assault by unspecified means

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Assassination (attempted) NOS
    • Homicide (attempted) NOS
    • Manslaughter (attempted) NOS
    • Murder (attempted) NOS
    • bodily force Y04.8
      ICD-10-CM Diagnosis Code Y04.8

      Assault by other bodily force

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      Applicable To
      • Assault by bodily force NOS
      • bumping into Y04.2
    • striking against
      • other person Y04.2
  • Bumping against, into (accidentally)
    • person(s) W51
      ICD-10-CM Diagnosis Code W51

      Accidental striking against or bumped into by another person

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      Type 1 Excludes
      • assault by striking against or bumping into by another person (Y04.2)
      • fall due to collision with another person (W03)
      • assault Y04.2
      • homicide Y04.2 (attempt)
  • Striking against
    • person(s) W51
      ICD-10-CM Diagnosis Code W51

      Accidental striking against or bumped into by another person

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      Type 1 Excludes
      • assault by striking against or bumping into by another person (Y04.2)
      • fall due to collision with another person (W03)
      • assault Y04.2
      • homicide Y04.2 (attempt)
  • Struck (accidentally)
    • other person(s) W50.0
      ICD-10-CM Diagnosis Code W50.0

      Accidental hit or strike by another person

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      Applicable To
      • Hit or strike by another person NOS
      • assault Y04.2
      • homicide Y04.2 (attempt)

ICD-10-CM Codes Adjacent To Y04.2
Y03.8XXS …… sequela
Y04 Assault by bodily force
Y04.0 Assault by unarmed brawl or fight
Y04.0XXA …… initial encounter
Y04.0XXD …… subsequent encounter
Y04.0XXS …… sequela
Y04.1 Assault by human bite
Y04.1XXA …… initial encounter
Y04.1XXD …… subsequent encounter
Y04.1XXS …… sequela
Y04.2 Assault by strike against or bumped into by another person
Y04.2XXA …… initial encounter
Y04.2XXD …… subsequent encounter
Y04.2XXS …… sequela
Y04.8 Assault by other bodily force
Y04.8XXA …… initial encounter
Y04.8XXD …… subsequent encounter
Y04.8XXS …… sequela
Y07 Perpetrator of assault, maltreatment and neglect
Y07.0 Spouse or partner, perpetrator of maltreatment and neglect
Y07.01 Husband, perpetrator of maltreatment and neglect

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