W31

Non-billable

Contact with other and unspecified machinery

W31 is the ICD-10-CM code for Contact with other and unspecified machinery. It is a non-billable category code — use a more specific child code such as W31.0 for billing.

Status
Header (non-billable)
Chapter
V00-Y99
Subcodes
6
Edition
FY2026

V00-Y99 External causes of morbidity

Excludes1 — not coded here

  • contact with agricultural machinery (W30.-)
  • contact with machinery in transport under own power or being towed by a vehicle (V01-V99)
  • exposure to electric current (W86)

Frequently asked questions

What is ICD-10 code W31?
W31 is the ICD-10-CM code for "Contact with other and unspecified machinery". It falls under V00-Y99 External causes of morbidity.
Is W31 a billable code?
No — W31 is a non-billable header code. Use a more specific child code (such as W31.0) for billing.
What are the subcodes of W31?
W31 has 6 more specific child codes, including W31.0, W31.1, W31.2.
What is excluded from W31?
Excludes1 (not coded here): contact with agricultural machinery (W30.-); contact with machinery in transport under own power or being towed by a vehicle (V01-V99); exposure to electric current (W86).

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

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