2020 ICD-10-CM Diagnosis Code W31.1

Contact with metalworking machines

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • W31.1 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM W31.1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of W31.1 - other international versions of ICD-10 W31.1 may differ.
ICD-10-CM Coding Rules
  • W31.1 describes the circumstance causing an injury, not the nature of the injury.
Applicable To
  • Contact with abrasive wheel
  • Contact with forging machine
  • Contact with lathe
  • Contact with mechanical shears
  • Contact with metal drilling machine
  • Contact with milling machine
  • Contact with power press
  • Contact with rolling-mill
  • Contact with metal sawing machine
The following code(s) above W31.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to W31.1:
  • V00-Y99
    2020 ICD-10-CM Range V00-Y99

    External causes of morbidity

    • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.
    External causes of morbidity
  • W20-W49
    2020 ICD-10-CM Range W20-W49

    Exposure to inanimate mechanical forces

    Type 1 Excludes
    • 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)
    Exposure to inanimate mechanical forces
  • W31
    ICD-10-CM Diagnosis Code W31

    Contact with other and unspecified machinery

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • 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)
    Contact with other and unspecified machinery
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

External Cause Index entries containing back-references to W31.1:
  • Contact (accidental)
    • with
      • lathe (metalworking) W31.1
      • machine, machinery W31.9
        ICD-10-CM Diagnosis Code W31.9

        Contact with unspecified machinery

          2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
        Applicable To
        • Contact with machinery NOS
        • abrasive wheel W31.1
        • drilling, metal W31.1 (industrial)
        • forging machine W31.1
        • lathe W31.1
        • metal drill W31.1
        • metalworking W31.1 (industrial)
        • milling, metal W31.1
        • power press, metal W31.1
        • rolling mill, metal W31.1
      • shears (hand) W27.2
        ICD-10-CM Diagnosis Code W27.2

        Contact with scissors

          2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      • abrasive wheel W31.1 (metalworking)
      • forging W31.1 (metalworking)
      • sawing machine, metal W31.1

ICD-10-CM Codes Adjacent To W31.1
W30.89XS …… sequela
W30.9 Contact with unspecified agricultural machinery
W30.9XXA …… initial encounter
W30.9XXD …… subsequent encounter
W30.9XXS …… sequela
W31 Contact with other and unspecified machinery
W31.0 Contact with mining and earth-drilling machinery
W31.0XXA …… initial encounter
W31.0XXD …… subsequent encounter
W31.0XXS …… sequela
W31.1 Contact with metalworking machines
W31.1XXA …… initial encounter
W31.1XXD …… subsequent encounter
W31.1XXS …… sequela
W31.2 Contact with powered woodworking and forming machines
W31.2XXA …… initial encounter
W31.2XXD …… subsequent encounter
W31.2XXS …… sequela
W31.3 Contact with prime movers
W31.3XXA …… initial encounter
W31.3XXD …… subsequent encounter

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.