ICD-10-CM category
W31: Contact with other and unspecified machinery
Codes under W31 (Contact with other and unspecified machinery). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| W31.0 | Contact with mining and earth-drilling machinery | — |
| W31.0 | Contact with mining and earth-drilling machinery | — |
| W31.0XXA | Contact with mining and earth-drilling machinery, initial encounter | ✓ |
| W31.0XXA | Contact with mining and earth-drilling machinery, initial encounter | ✓ |
| W31.0XXD | Contact with mining and earth-drilling machinery, subsequent encounter | ✓ |
| W31.0XXD | Contact with mining and earth-drilling machinery, subsequent encounter | ✓ |
| W31.0XXS | Contact with mining and earth-drilling machinery, sequela | ✓ |
| W31.0XXS | Contact with mining and earth-drilling machinery, sequela | ✓ |
| W31.1 | Contact with metalworking machines | — |
| W31.1 | Contact with metalworking machines | — |
| W31.1XXA | Contact with metalworking machines, initial encounter | ✓ |
| W31.1XXA | Contact with metalworking machines, initial encounter | ✓ |
| W31.1XXD | Contact with metalworking machines, subsequent encounter | ✓ |
| W31.1XXD | Contact with metalworking machines, subsequent encounter | ✓ |
| W31.1XXS | Contact with metalworking machines, sequela | ✓ |
| W31.1XXS | Contact with metalworking machines, sequela | ✓ |
| W31.2 | Contact with powered woodworking and forming machines | — |
| W31.2 | Contact with powered woodworking and forming machines | — |
| W31.2XXA | Contact with powered woodworking and forming machines, initial encounter | ✓ |
| W31.2XXA | Contact with powered woodworking and forming machines, initial encounter | ✓ |
| W31.2XXD | Contact with powered woodworking and forming machines, subsequent encounter | ✓ |
| W31.2XXD | Contact with powered woodworking and forming machines, subsequent encounter | ✓ |
| W31.2XXS | Contact with powered woodworking and forming machines, sequela | ✓ |
| W31.2XXS | Contact with powered woodworking and forming machines, sequela | ✓ |
| W31.3 | Contact with prime movers | — |
| W31.3 | Contact with prime movers | — |
| W31.3XXA | Contact with prime movers, initial encounter | ✓ |
| W31.3XXA | Contact with prime movers, initial encounter | ✓ |
| W31.3XXD | Contact with prime movers, subsequent encounter | ✓ |
| W31.3XXD | Contact with prime movers, subsequent encounter | ✓ |
| W31.3XXS | Contact with prime movers, sequela | ✓ |
| W31.3XXS | Contact with prime movers, sequela | ✓ |
| W31.8 | Contact with other specified machinery | — |
| W31.8 | Contact with other specified machinery | — |
| W31.9 | Contact with unspecified machinery | — |
| W31.9 | Contact with unspecified machinery | — |
| W31.9XXA | Contact with unspecified machinery, initial encounter | ✓ |
| W31.9XXA | Contact with unspecified machinery, initial encounter | ✓ |
| W31.9XXD | Contact with unspecified machinery, subsequent encounter | ✓ |
| W31.9XXD | Contact with unspecified machinery, subsequent encounter | ✓ |
| W31.9XXS | Contact with unspecified machinery, sequela | ✓ |
| W31.9XXS | Contact with unspecified machinery, sequela | ✓ |
| W31.81 | Contact with recreational machinery | — |
| W31.81 | Contact with recreational machinery | — |
| W31.81XA | Contact with recreational machinery, initial encounter | ✓ |
| W31.81XA | Contact with recreational machinery, initial encounter | ✓ |
| W31.81XD | Contact with recreational machinery, subsequent encounter | ✓ |
| W31.81XD | Contact with recreational machinery, subsequent encounter | ✓ |
| W31.81XS | Contact with recreational machinery, sequela | ✓ |
| W31.81XS | Contact with recreational machinery, sequela | ✓ |
| W31.82 | Contact with other commercial machinery | — |
| W31.82 | Contact with other commercial machinery | — |
| W31.82XA | Contact with other commercial machinery, initial encounter | ✓ |
| W31.82XA | Contact with other commercial machinery, initial encounter | ✓ |
| W31.82XD | Contact with other commercial machinery, subsequent encounter | ✓ |
| W31.82XD | Contact with other commercial machinery, subsequent encounter | ✓ |
| W31.82XS | Contact with other commercial machinery, sequela | ✓ |
| W31.82XS | Contact with other commercial machinery, sequela | ✓ |
| W31.83 | Contact with special construction vehicle in stationary use | — |
| W31.83 | Contact with special construction vehicle in stationary use | — |
| W31.83XA | Contact with special construction vehicle in stationary use, initial encounter | ✓ |
| W31.83XA | Contact with special construction vehicle in stationary use, initial encounter | ✓ |
| W31.83XD | Contact with special construction vehicle in stationary use, subsequent encounter | ✓ |
| W31.83XD | Contact with special construction vehicle in stationary use, subsequent encounter | ✓ |
| W31.83XS | Contact with special construction vehicle in stationary use, sequela | ✓ |
| W31.83XS | Contact with special construction vehicle in stationary use, sequela | ✓ |
| W31.89 | Contact with other specified machinery | — |
| W31.89 | Contact with other specified machinery | — |
| W31.89XA | Contact with other specified machinery, initial encounter | ✓ |
| W31.89XA | Contact with other specified machinery, initial encounter | ✓ |
| W31.89XD | Contact with other specified machinery, subsequent encounter | ✓ |
| W31.89XD | Contact with other specified machinery, subsequent encounter | ✓ |
| W31.89XS | Contact with other specified machinery, sequela | ✓ |
| W31.89XS | Contact with other specified machinery, sequela | ✓ |
Frequently asked questions
What is ICD-10-CM code W31?
W31 is an ICD-10-CM category covering Contact with other and unspecified machinery. It contains 74 more specific diagnosis codes, 54 of which are billable.
Is W31 a billable code?
No — W31 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example W31.0 — Contact with mining and earth-drilling machinery). 54 of the 74 codes under W31 are billable.
What codes fall under W31?
W31 includes W31.0, W31.0, W31.0XXA, W31.0XXA, W31.0XXD, plus 69 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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