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W40

Non-billable

Explosion of other materials

W40 is the ICD-10-CM code for Explosion of other materials. It is a non-billable category code — use a more specific child code such as W40.0 for billing.

Status
Header (non-billable)
Chapter
V00-Y99
Subcodes
4
Edition
FY2026

V00-Y99 External causes of morbidity

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)

Frequently asked questions

What is ICD-10 code W40?
W40 is the ICD-10-CM code for "Explosion of other materials". It falls under V00-Y99 External causes of morbidity.
Is W40 a billable code?
No — W40 is a non-billable header code. Use a more specific child code (such as W40.0) for billing.
What are the subcodes of W40?
W40 has 4 more specific child codes, including W40.0, W40.1, W40.8.
What is excluded from W40?
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).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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