DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

W34 Accidental discharge and malfunction from other and unspecified firearms and guns

  • Header · not billable
  • Codes take a 7th character

W34 is not billable. The category heads 30 billable codes in FY2027, grouped under 2 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Where it sits

  1. Chapter 20 External causes of morbidity (V00-Y99)
  2. W20-W49 Exposure to inanimate mechanical forces (W20-W49)
  3. W34 Accidental discharge and malfunction from other and unspecified firearms and guns
Billable codes
30
Subdivisions
2
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
0

Codes in W34

  1. W34.0
    Accidental discharge from other and unspecified firearms and guns
    Header
  2. W34.00
    Accidental discharge from unspecified firearms or gun +7th: A D S
    Needs 7th characterExempt
    Inclusion terms 3

    Inclusion terms

    • Discharge from firearm NOS
    • Gunshot wound NOS
    • Shot NOS
  3. W34.01
    Accidental discharge of gas, air or spring-operated guns
    Header
  4. W34.010
    Accidental discharge of airgun +7th: A D S
    Needs 7th characterExempt
    Inclusion terms 2

    Inclusion terms

    • Accidental discharge of BB gun
    • Accidental discharge of pellet gun
  5. W34.011
    Accidental discharge of paintball gun +7th: A D S
    Needs 7th characterExempt
    Inclusion terms 1

    Inclusion terms

    • Accidental injury due to paintball discharge
  6. W34.018
    Accidental discharge of other gas, air or spring-operated gun +7th: A D S
    Needs 7th characterExempt
  7. W34.09
    Accidental discharge from other specified firearms +7th: A D S
    Needs 7th characterExempt
    Inclusion terms 1

    Inclusion terms

    • Accidental discharge from Very pistol [flare]
  8. W34.1
    Accidental malfunction from other and unspecified firearms and guns
    Header
  9. W34.10
    Accidental malfunction from unspecified firearms or gun +7th: A D S
    Needs 7th characterExempt
    Inclusion terms 1

    Inclusion terms

    • Firearm malfunction NOS
  10. W34.11
    Accidental malfunction of gas, air or spring-operated guns
    Header
  11. W34.110
    Accidental malfunction of airgun +7th: A D S
    Needs 7th characterExempt
    Inclusion terms 2

    Inclusion terms

    • Accidental malfunction of BB gun
    • Accidental malfunction of pellet gun
  12. W34.111
    Accidental malfunction of paintball gun +7th: A D S
    Needs 7th characterExempt
    Inclusion terms 1

    Inclusion terms

    • Accidental injury due to paintball gun malfunction
  13. W34.118
    Accidental malfunction of other gas, air or spring-operated gun +7th: A D S
    Needs 7th characterExempt
  14. W34.19
    Accidental malfunction from other specified firearms +7th: A D S
    Needs 7th characterExempt
    Inclusion terms 1

    Inclusion terms

    • Accidental malfunction from Very pistol [flare]

Sources of each column. Rows marked +7th need a 7th character: pick one to build the full code; its code card has its own flags.

Instructions

Notes that also apply

Block W20-W49 instructions (Excludes1 4): printed on the block page.

Chapter 20 instructions (Notes 1): printed on the chapter 20 page.

7th characters

7th characters for W34 defined here

The appropriate 7th character is to be added to each code from category W34

7th characters for W34
7thMeaning (NCHS)
Ainitial encounter
Dsubsequent encounter
Ssequela

A code that takes a 7th character is invalid without it; the placeholder X fills a code shorter than 6 characters (Official Guidelines I.A.5). How 7th characters work.

Hierarchy