W31Header code — not billable
Contact with other and unspecified machinery
- Chapter
- 20. External causes of morbidity
- Category
- W31
- Effective date
- October 1, 2026
Related codes in category W31
W31.0Contact with mining and earth-drilling machineryW31.0XXAContact w mining and earth-drilling machinery, init encntrYesW31.0XXDContact w mining and earth-drilling machinery, subs encntrYesW31.0XXSContact with mining and earth-drilling machinery, sequelaYesW31.1Contact with metalworking machinesW31.1XXAContact with metalworking machines, initial encounterYesW31.1XXDContact with metalworking machines, subsequent encounterYesW31.1XXSContact with metalworking machines, sequelaYesW31.2Contact with powered woodworking and forming machinesW31.2XXAContact w powered woodworking and forming machines, initYesW31.2XXDContact w powered woodworking and forming machines, subsYesW31.2XXSContact w powered woodworking and forming machines, sequelaYes
Frequently asked questions
What is ICD-10 code W31?
W31 is an ICD-10-CM diagnosis code for Contact with other and unspecified machinery.
Is W31 a billable code?
No. W31 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is W31 in?
W31 falls under Chapter 20: External causes of morbidity.
When did W31 become effective?
W31 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to W31?
W31 belongs to category W31, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.