W33 vs W34.010
W33 (Accidental rifle, shotgun and larger firearm discharge and malfunction) compared with W34.010 (Accidental discharge of airgun), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. W33 carries an Excludes1 note covering W34.010: “accidental airgun discharge and malfunction (W34.010, W34.110)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. W33 carries an Excludes1 note covering W34.010: “accidental BB gun discharge and malfunction (W34.010, W34.110)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. W33 carries an Excludes1 note covering W34.010: “accidental pellet gun discharge and malfunction (W34.010, W34.110)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| W33Accidental rifle, shotgun and larger firearm discharge and malfunction | W34.010Accidental discharge of airgun | |
|---|---|---|
| Billing status | Non-billable header Report instead: W33.00XA, W33.00XD, W33.00XS, W33.01XA, W33.01XD | Non-billable header |
| Classification | V00-Y99 — External Causes of Morbidity (V00-Y99) | V00-Y99 — External Causes of Morbidity (V00-Y99) |
| Definition | Accidental rifle, shotgun and larger firearm discharge and malfunction is a non-billable ICD-10-CM category code (W33). | Accidental discharge of airgun is a non-billable ICD-10-CM category code (W34.010). |
| 7th character | The appropriate 7th character is to be added to each code from category W33 | The appropriate 7th character is to be added to each code from category W34 |
| Includes | rifle, shotgun and larger firearm discharge and malfunction NOS | Accidental discharge of BB gun Accidental discharge of pellet gun |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources