ICD-10-CM Codes
V00-Y99 External causes of morbidity
W20-W49 Exposure to inanimate mechanical forces
W34- Accidental discharge and malfunction from other and unspecified firearms and guns
2022 ICD-10-CM Diagnosis Code W34.09

2022 ICD-10-CM Diagnosis Code W34.09

Accidental discharge from other specified firearms

2016

2017

2018

2019

2020

2021

2022

Non-Billable/Non-Specific Code

W34.09 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2022 edition of ICD-10-CM W34.09 became effective on October 1, 2021.
This is the American ICD-10-CM version of W34.09 - other international versions of ICD-10 W34.09 may differ.

ICD-10-CM Coding Rules

W34.09 describes the circumstance causing an injury, not the nature of the injury.

Applicable To

Accidental discharge from Very pistol [flare]

The following code(s) above W34.09 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 W34.09:

V00-Y99
2022 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
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

Code annotations containing back-references to W34.09:

Type 1 Excludes: W32

ICD-10-CM Diagnosis Code W32
Accidental handgun discharge and malfunction
Includes
- accidental discharge and malfunction of gun for single hand use
- accidental discharge and malfunction of pistol
- accidental discharge and malfunction of revolver
- Handgun 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 pellet gun discharge and malfunction (W34.010, W34.110)
- accidental shotgun discharge and malfunction (W33.01, W33.11)
- assault by handgun discharge (X93)
- handgun discharge involving legal intervention (Y35.0-)
- handgun discharge involving military or war operations (Y36.4-)
- intentional self-harm by handgun discharge (X72)
- Very pistol discharge and malfunction (W34.09, W34.19)

External Cause Index entries containing back-references to W34.09:

Discharge (accidental)
- firearm (accidental) W34.00
  ICD-10-CM Diagnosis Code W34.00
  Accidental discharge from unspecified firearms or gun
  2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
  Applicable To
  Discharge from firearm NOS
  Gunshot wound NOS
  Shot NOS
  - specified NEC W34.09
  - Very pistol W34.09

ICD-10-CM Codes Adjacent To W34.09

W34.010D …… subsequent encounter

W34.010S …… sequela

W34.011 Accidental discharge of paintball gun

W34.011A …… initial encounter

W34.011D …… subsequent encounter

W34.011S …… sequela

W34.018 Accidental discharge of other gas, air or spring-operated gun

W34.018A …… initial encounter

W34.018D …… subsequent encounter

W34.018S …… sequela

W34.09 Accidental discharge from other specified firearms

W34.09XA …… initial encounter

W34.09XD …… subsequent encounter

W34.09XS …… sequela

W34.1 Accidental malfunction from other and unspecified firearms and guns

W34.10 Accidental malfunction from unspecified firearms or gun

W34.10XA …… initial encounter

W34.10XD …… subsequent encounter

W34.10XS …… sequela

W34.11 Accidental malfunction of gas, air or spring-operated guns

W34.110 Accidental malfunction of airgun

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

2022 ICD-10-CM Diagnosis Code W34.09

Accidental discharge from other specified firearms

External causes of morbidity

Exposure to inanimate mechanical forces

Accidental handgun discharge and malfunction

Accidental discharge from unspecified firearms or gun