W31.9XXD — Contact with unspecified machinery, subsequent encounter
Is W31.9XXD billable?
Yes, but W31.9XXD is an unspecified code. W31.9XXD is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, W31.9XXD is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting W31.9XXD.
W31.9XXD at a glance
| Code | W31.9XXD |
|---|---|
| Description | Contact with unspecified machinery, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in W31.9XXD?
In W31.9XXD, the 7th character D means subsequent encounter. The 7th character is required for W31.9XXD to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is W31.9XXD listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under W31.9, the nearest indexed parent of W31.9XXD. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Cut, cutting › machine NEC (any part of body) (accidental)
- Contact › with › machine, machinery (accidental)
Inclusion terms
Alternative wording in documentation that is classified to W31.9XXD.
- Contact with machinery NOS
Excludes1 — never code together — inherited from W20-W49
The conditions below can never be reported together with W31.9XXD on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from W31
The conditions below can never be reported together with W31.9XXD on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
How long has W31.9XXD existed?
W31.9XXD has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.