2021 ICD-10-CM Diagnosis Code Y00

Assault by blunt object

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • Y00 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM Y00 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of Y00 - other international versions of ICD-10 Y00 may differ.
ICD-10-CM Coding Rules
  • Y00 describes the circumstance causing an injury, not the nature of the injury.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Y00. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • assault by strike by sports equipment (
    ICD-10-CM Diagnosis Code Y08.0

    Assault by strike by sport equipment

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Y08.0-
    )
The following code(s) above Y00 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 Y00:
  • V00-Y99
    2021 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
    2021 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
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
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to Y00:
  • Type 1 Excludes: Y04
    ICD-10-CM Diagnosis Code Y04

    Assault by bodily force

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes

External Cause Index entries containing back-references to Y00:
  • Assault (homicidal) (by) (in) Y09
    ICD-10-CM Diagnosis Code Y09

    Assault by unspecified means

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Assassination (attempted) NOS
    • Homicide (attempted) NOS
    • Manslaughter (attempted) NOS
    • Murder (attempted) NOS
    • weapon Y09
      ICD-10-CM Diagnosis Code Y09

      Assault by unspecified means

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Assassination (attempted) NOS
      • Homicide (attempted) NOS
      • Manslaughter (attempted) NOS
      • Murder (attempted) NOS
      • blunt Y00
  • Struck (accidentally)
    • object W22.8
      ICD-10-CM Diagnosis Code W22.8

      Striking against or struck by other objects

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      Applicable To
      • Striking against or struck by object NOS
      Type 1 Excludes
      • struck by thrown, projected or falling object (W20.-)
      • blunt W22.8
        ICD-10-CM Diagnosis Code W22.8

        Striking against or struck by other objects

          2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
        Applicable To
        • Striking against or struck by object NOS
        Type 1 Excludes
        • struck by thrown, projected or falling object (W20.-)
        • assault Y00
      • projected W20.8
        ICD-10-CM Diagnosis Code W20.8

        Other cause of strike by thrown, projected or falling object

          2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
        Type 1 Excludes
        • struck by thrown sports equipment (W21.-)
        • assault Y00
      • thrown W20.8
        ICD-10-CM Diagnosis Code W20.8

        Other cause of strike by thrown, projected or falling object

          2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
        Type 1 Excludes
        • struck by thrown sports equipment (W21.-)
        • assault Y00
    • other person(s) W50.0
      ICD-10-CM Diagnosis Code W50.0

      Accidental hit or strike by another person

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      Applicable To
      • Hit or strike by another person NOS
      • with
        • blunt object W22.8
          ICD-10-CM Diagnosis Code W22.8

          Striking against or struck by other objects

            2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
          Applicable To
          • Striking against or struck by object NOS
          Type 1 Excludes
          • struck by thrown, projected or falling object (W20.-)
          • intentional, homicide Y00 (attempt)

ICD-10-CM Codes Adjacent To Y00
X99.2XXD …… subsequent encounter
X99.2XXS …… sequela
X99.8 Assault by other sharp object
X99.8XXA …… initial encounter
X99.8XXD …… subsequent encounter
X99.8XXS …… sequela
X99.9 Assault by unspecified sharp object
X99.9XXA …… initial encounter
X99.9XXD …… subsequent encounter
X99.9XXS …… sequela
Y00 Assault by blunt object
Y00.XXXA Assault by blunt object, initial encounter
Y00.XXXD Assault by blunt object, subsequent encounter
Y00.XXXS Assault by blunt object, sequela
Y01 Assault by pushing from high place
Y01.XXXA Assault by pushing from high place, initial encounter
Y01.XXXD Assault by pushing from high place, subsequent encounter
Y01.XXXS Assault by pushing from high place, sequela
Y02 Assault by pushing or placing victim in front of moving object
Y02.0 Assault by pushing or placing victim in front of motor vehicle
Y02.0XXA …… initial encounter

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