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W31.8

W31.8: Contact with other specified machinery

Non-billable headerICD-10-CM

W31.8 is a non-billable header ICD-10-CM code for contact with other specified machinery. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category W31

A
initial encounter
D
subsequent encounter
S
sequela

Excludes1 inherited from the categories above W31.8

A category’s note binds every code beneath it.

Written on W31: Contact with other and unspecified machinery

  • 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)

Other codes that can never be billed with W31.8

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • V83Occupant of special vehicle mainly used on industrial premises injured in transport accident
  • V85Occupant of special construction vehicle injured in transport accident
  • V86Occupant of special all-terrain or other off-road motor vehicle, injured in transport accident
  • W29Contact with other powered hand tools and household machinery

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead W31.8

4 child codes. Green means billable.

Other codes under W31

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.