2023

  1. ICD-10-CM Codes
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  2. V00-Y99
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  3. W20-W49
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  4. W33-
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  5. 2023 ICD-10-CM Diagnosis Code W33.19

2023 ICD-10-CM Diagnosis Code W33.19

Accidental malfunction of other larger firearm

    2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
  • W33.19 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2023 edition of ICD-10-CM W33.19 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of W33.19 - other international versions of ICD-10 W33.19 may differ.
ICD-10-CM Coding Rules
  • W33.19 describes the circumstance causing an injury, not the nature of the injury.
Applicable To
  • Malfunction of other larger firearm NOS
The following code(s) above W33.19 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 W33.19:
  • V00-Y99
    2023 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
  • W20-W49
    2023 ICD-10-CM Range W20-W49

    Exposure to inanimate mechanical forces

    Type 1 Excludes
    • assault (X92-Y09)
    • contact or collision with animals or persons (W50-W64)
    • exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
    • intentional self-harm (X71-X83)
    Exposure to inanimate mechanical forces
  • W33
    ICD-10-CM Diagnosis Code W33

    Accidental rifle, shotgun and larger firearm discharge and malfunction

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Includes
    • rifle, shotgun and larger firearm discharge and malfunction NOS
    Type 1 Excludes
    • accidental airgun discharge and malfunction (W34.010, W34.110)
    • accidental BB gun discharge and malfunction (W34.010, W34.110)
    • accidental handgun discharge and malfunction (W32.-)
    • accidental pellet gun discharge and malfunction (W34.010, W34.110)
    • assault by rifle, shotgun and larger firearm discharge (X94)
    • firearm discharge involving legal intervention (Y35.0-)
    • firearm discharge involving military or war operations (Y36.4-)
    • intentional self-harm by rifle, shotgun and larger firearm discharge (X73)
    Accidental rifle, shotgun and larger firearm discharge and malfunction
  • W33.1
    ICD-10-CM Diagnosis Code W33.1

    Accidental rifle, shotgun and larger firearm malfunction

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Applicable To
    • Injury due to explosion of rifle, shotgun and larger firearm (parts)
    • Injury due to malfunction of mechanism or component of rifle, shotgun and larger firearm
    • Injury due to piercing, cutting, crushing or pinching due to (by) slide trigger mechanism, scope or other gun part
    • Injury due to recoil of rifle, shotgun and larger firearm
    • Powder burn from rifle, shotgun and larger firearm
    Accidental rifle, shotgun and larger firearm malfunction
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
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

External Cause Index entries containing back-references to W33.19:
  • Explosion (accidental) (of) (with secondary fire) W40.9
    ICD-10-CM Diagnosis Code W40.9

    Explosion of unspecified explosive materials

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Applicable To
    • Explosion NOS
    • firearm (parts) W34.19
      ICD-10-CM Diagnosis Code W34.19

      Accidental malfunction from other specified firearms

        2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
      Applicable To
      • Accidental malfunction from Very pistol [flare]
      • larger firearm W33.10
        ICD-10-CM Diagnosis Code W33.10

        Accidental malfunction of unspecified larger firearm

          2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
        Applicable To
        • Malfunction of unspecified larger firearm NOS
        • specified NEC W33.19
  • Malfunction (mechanism or component) (of)
    • firearm W34.10
      ICD-10-CM Diagnosis Code W34.10

      Accidental malfunction from unspecified firearms or gun

        2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
      Applicable To
      • Firearm malfunction NOS
      • larger firearm W33.10
        ICD-10-CM Diagnosis Code W33.10

        Accidental malfunction of unspecified larger firearm

          2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
        Applicable To
        • Malfunction of unspecified larger firearm NOS
        • specified NEC W33.19
  • Powder burn (by) (from)
    • larger firearm W33.10
      ICD-10-CM Diagnosis Code W33.10

      Accidental malfunction of unspecified larger firearm

        2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
      Applicable To
      • Malfunction of unspecified larger firearm NOS
      • specified NEC W33.19
  • Recoil
    • larger firearm W33.10
      ICD-10-CM Diagnosis Code W33.10

      Accidental malfunction of unspecified larger firearm

        2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
      Applicable To
      • Malfunction of unspecified larger firearm NOS
      • specified NEC W33.19

ICD-10-CM Codes Adjacent To W33.19
W33.11XD …… subsequent encounter
W33.11XS …… sequela
W33.12 Accidental malfunction of hunting rifle
W33.12XA …… initial encounter
W33.12XD …… subsequent encounter
W33.12XS …… sequela
W33.13 Accidental malfunction of machine gun
W33.13XA …… initial encounter
W33.13XD …… subsequent encounter
W33.13XS …… sequela
W33.19 Accidental malfunction of other larger firearm
W33.19XA …… initial encounter
W33.19XD …… subsequent encounter
W33.19XS …… sequela
W34 Accidental discharge and malfunction from other and unspecified firearms and guns
W34.0 Accidental discharge from other and unspecified firearms and guns
W34.00 Accidental discharge from unspecified firearms or gun
W34.00XA …… initial encounter
W34.00XD …… subsequent encounter
W34.00XS …… sequela
W34.01 Accidental discharge of gas, air or spring-operated guns

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

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