W33.10 Accidental malfunction of unspecified larger firearm

Non-billable ICD-10-CM code.

Applicable to

• Malfunction of unspecified larger firearm 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 W33.10

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 W33.10

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

Nearby codes

• W33.09 Accidental discharge of other larger firearm
• W33.09XA Accidental discharge of other larger firearm, initial encounter
• W33.09XD Accidental discharge of other larger firearm, subsequent encounter
• W33.09XS Accidental discharge of other larger firearm, sequela
• W33.1 Accidental rifle, shotgun and larger firearm malfunction
• W33.10 Accidental malfunction of unspecified larger firearm (this code)
• W33.10XA Accidental malfunction of unspecified larger firearm, initial encounter
• W33.10XD Accidental malfunction of unspecified larger firearm, subsequent encounter
• W33.10XS Accidental malfunction of unspecified larger firearm, sequela
• W33.11 Accidental malfunction of shotgun
• W33.11XA Accidental malfunction of shotgun, initial encounter