2022 ICD-10-CM Diagnosis Code W34

Accidental discharge and malfunction from other and unspecified firearms and guns

    2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
  • W34 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Acc disch and malfunct from oth and unsp firearms and guns
  • The 2022 edition of ICD-10-CM W34 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of W34 - other international versions of ICD-10 W34 may differ.
ICD-10-CM Coding Rules
  • W34 describes the circumstance causing an injury, not the nature of the injury.
The following code(s) above W34 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 W34:
  • V00-Y99
    2022 ICD-10-CM Range V00-Y99

    External causes of morbidity

    • 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
    2022 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
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
ICD-10-CM Codes Adjacent To W34
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
W34.010 Accidental discharge of airgun
W34.010A …… initial encounter
W34.010D …… subsequent encounter
W34.010S …… sequela

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