Discharge of firework (W39) ICD-10-CM
The W39 code range covers discharge of firework with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to code W39
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the W39 Range 4 codes · 3 billable
About the W39 Code Range
W39 codes capture injuries related to the discharge of fireworks. These codes are used to document accidents involving fireworks, such as burns or other harm caused by their explosion or misfire.
The ICD-10 code for discharge of firework, W39, and its variations specify the type of encounter: initial encounter (W39.XXXA) for the first treatment after injury, subsequent encounter (W39.XXXD) for follow-up care, and sequela (W39.XXXS) for complications or conditions that arise as a direct result of the firework accident. Commonly referenced as "accident caused by fireworks" or "firework burn of skin," these terms help medical coders accurately assign the appropriate code when fireworks cause injury. Using these codes ensures that records precisely reflect injuries from firework incidents and the stage of care being provided, which is essential for clinical, legal, and billing purposes. This ICD-10 code for firework injuries specifically distinguishes these causes from other types of burns or trauma.
Questions About This Page
How many billable codes are in the W39 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the W39 range classify?
The range classifies discharge of firework. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
