W33.13 Accidental malfunction of machine gun

Non-billable ICD-10-CM code.

Applicable to

• Malfunction of machine gun NOS

Applies from W33 Accidental rifle, shotgun and larger firearm discharge and malfunction

Includes

• rifle, shotgun and larger firearm discharge and malfunction NOS

Excludes1 (never code together)

• 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)

7th character note

• The appropriate 7th character is to be added to each code from category W33

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from W33.1 Accidental rifle, shotgun and larger firearm malfunction

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

Code annotations containing back-references to W33.13

Back-references to W33.1

• Type 1 Excludes: W23 Caught, crushed, jammed or pinched in or between objects ("injury caused by firearms malfunction (W32.1, W33.1-, W34.1-)")

Back-references to W33

• Type 1 Excludes: W20 Struck by thrown, projected or falling object ("object set in motion by firearm (W32-W34)")
• Code First: W25 Contact with sharp glass ("injury due to flying glass from explosion or firearm discharge (W32-W40)")

Diagnosis Index entries for W33.13

• Explosion (accidental) (of) (with secondary fire) › firearm (parts) NEC › machine gun
• Malfunction (mechanism or component) (of) › firearm › machine gun
• Powder burn (by) (from) › machine gun
• Recoil › machine gun

Nearby codes

• W33.11XS Accidental malfunction of shotgun, sequela
• W33.12 Accidental malfunction of hunting rifle
• W33.12XA Accidental malfunction of hunting rifle, initial encounter
• W33.12XD Accidental malfunction of hunting rifle, subsequent encounter
• W33.12XS Accidental malfunction of hunting rifle, sequela
• W33.13 Accidental malfunction of machine gun (this code)
• W33.13XA Accidental malfunction of machine gun, initial encounter
• W33.13XD Accidental malfunction of machine gun, subsequent encounter
• W33.13XS Accidental malfunction of machine gun, sequela
• W33.19 Accidental malfunction of other larger firearm
• W33.19XA Accidental malfunction of other larger firearm, initial encounter