W31
Non-billableContact with other and unspecified machinery
Contact with other and unspecified machinery
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- •assaultX92-Y09
- •contact or collision with animals or personsW50-W64
- •exposure to inanimate mechanical forces involving military or war operations,Y36, Y37
- •intentional self-harmX71-X83
- •contact with agricultural machineryW30
- •contact with machinery in transport under own power or being towed by a vehicleV01-V99
- •exposure to electric currentW86
7th Character Definitions
- A - initial encounter
- D - subsequent encounter
- S - sequela
Child Codes (6)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(1)
Frequently Asked Questions
What is the ICD-10 code for contact with other and unspecified machinery?
The ICD-10-CM code for contact with other and unspecified machinery is W31. The full clinical description is "Contact with other and unspecified machinery". W31 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code W31 mean?
ICD-10-CM code W31 represents “Contact with other and unspecified machinery”. It is classified under Chapter 21: External Causes of Morbidity and is a non-billable header code. Use a more specific child code for billing purposes.
Is W31 a billable code?
No, W31 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under W31.
What chapter is W31 in?
W31 is in Chapter 21: External Causes of Morbidity (codes V00-Y99).
What codes cannot be used with W31?
W31 has Excludes1 notes indicating codes that cannot be used together with it, including: assault (X92-Y09); contact or collision with animals or persons (W50-W64); exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-); and 4 more.
What are the subcategories under W31?
W31 has 6 child codes, including: W31.0 (Contact with mining and earth-drilling machinery), W31.1 (Contact with metalworking machines), W31.2 (Contact with powered woodworking and forming machines), W31.3 (Contact with prime movers), and 2 more.
What are the UMLS CUIs for W31?
W31 is linked to 1 UMLS Concept Unique Identifier: C0479005. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does W31 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like contact with other and unspecified machinery affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of W31?
W31 maps to the ICD-11 code: PB6Y (Other unintentional cause of morbidity or mortality).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.