W39A is the authoritative medical code for Discharge of firework, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for discharge of firework, initial encounter (ICD-10-CM W39A), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Discharge of firework, initial encounter is a billable ICD-10-CM diagnosis code W39A. Excludes1 (not coded here): assault X92-Y09; contact or collision with animals or persons W50-W64; exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-); intentional self-harm X71-X83. 7th character: The appropriate 7th character is to be added to code W39.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for W39A in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- assault X92-Y09
- contact or collision with animals or persons W50-W64
- exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
- intentional self-harm X71-X83
Frequently Asked Questions (FAQ) & Clinical Guidance
Does W39A require a 7th character?
Yes. The appropriate 7th character is to be added to code W39.
What can't be coded together with W39A?
Per Excludes1 instructions, W39A must not be reported with: assault (X92-Y09); contact or collision with animals or persons (W50-W64); exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-); intentional self-harm (X71-X83).
Codes in This Family (6)
Official ICD-10-CM classifications in the same code family as W39A, with their registry titles.
- W39 — Discharge of firework
- W39.XXXA — Discharge of firework, initial encounter
- W39.XXXD — Discharge of firework, subsequent encounter
- W39.XXXS — Discharge of firework, sequela
- W39D — Discharge of firework, subsequent encounter
- W39S — Discharge of firework, sequela
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code W38A
Explosion and rupture of other specified pressurized devices, initial encounter