W40.9XXS is the authoritative medical code for Explosion of unspecified explosive materials, sequela. This classification is used in medical billing and clinical recording to specify the clinical criteria for explosion of unspecified explosive materials, sequela (ICD-10-CM W40.9XXS), 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
Explosion of unspecified explosive materials, sequela is a billable ICD-10-CM diagnosis code W40.9S. Inclusion terms: Explosion NOS. Excludes1 (not coded here): assault by explosive material X96; explosion involving legal intervention Y35.1-; explosion involving military or war operations (Y36.0-, Y36.2-); intentional self-harm by explosive material X75; 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 each code from category W40.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for W40.9XXS in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- assault by explosive material X96
- explosion involving legal intervention Y35.1-
- explosion involving military or war operations (Y36.0-, Y36.2-)
- intentional self-harm by explosive material X75
- 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 W40.9XXS require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category W40.
What can't be coded together with W40.9XXS?
Per Excludes1 instructions, W40.9XXS must not be reported with: assault by explosive material (X96); explosion involving legal intervention (Y35.1-); explosion involving military or war operations (Y36.0-, Y36.2-); intentional self-harm by explosive material (X75).
What conditions are included under W40.9XXS?
Explosion of unspecified explosive materials, sequela includes: Explosion NOS.
Codes in This Family (16)
Official ICD-10-CM classifications in the same code family as W40.9XXS, with their registry titles.
- W40 — Explosion of other materials
- W40.0 — Explosion of blasting material
- W40.0XXA — Explosion of blasting material, initial encounter
- W40.0XXD — Explosion of blasting material, subsequent encounter
- W40.0XXS — Explosion of blasting material, sequela
- W40.1 — Explosion of explosive gases
- W40.1XXA — Explosion of explosive gases, initial encounter
- W40.1XXD — Explosion of explosive gases, subsequent encounter
- W40.1XXS — Explosion of explosive gases, sequela
- W40.8 — Explosion of other specified explosive materials
- W40.8XXA — Explosion of other specified explosive materials, initial encounter
- W40.8XXD — Explosion of other specified explosive materials, subsequent encounter
- W40.8XXS — Explosion of other specified explosive materials, sequela
- W40.9 — Explosion of unspecified explosive materials
- W40.9XXA — Explosion of unspecified explosive materials, initial encounter
- W40.9XXD — Explosion of unspecified explosive materials, subsequent encounter
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 W44.9XXS
Unspecified foreign body entering into or through a natural orifice, sequela