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W31.3

W31.3: Contact with prime movers

Non-billable headerICD-10-CM

W31.3 is a non-billable header ICD-10-CM code for contact with prime movers. 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

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Contact with gas turbine
  • Contact with internal combustion engine
  • Contact with steam engine
  • Contact with water driven turbine

Excludes1 inherited from the categories above W31.3

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 W31.3

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

Risk adjustment

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

Alphabetic index entries that lead here

  • Contact›with›gas turbine
  • Contact›with›turbine(gas) (water-driven)
  • Accident›caused by, due to›electric›motor
  • Contact›with›machine, machinery›gas turbine
  • Contact›with›machine, machinery›internal combustion engine
  • Contact›with›machine, machinery›prime mover
  • Contact›with›machine, machinery›steam engine
  • Contact›with›machine, machinery›water driven turbine
  • Contact›with›steam›engine

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead W31.3

3 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.