W31.3XXD — Contact with prime movers, subsequent encounter
W31.3XXD is a billable, specific ICD-10-CM code for contact with prime movers, subsequent encounter. It is valid for submission on a claim.
7th character "D" — subsequent encounter
The appropriate 7th character is to be added to each code from category W31
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Contact with gas turbine
- Contact with internal combustion engine
- Contact with steam engine
- Contact with water driven turbine
Excludes1 inherited from the categories above W31.3XXD
These are not written on W31.3XXD, but they bind it: a note on a category applies to every code beneath it. Billing W31.3XXD with anything listed here is a denial.
Other codes that can never be billed with W31.3XXD
These codes carry an Excludes1 note pointing at W31.3XXD. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading W31.3XXD alone.
Risk adjustment
W31.3XXD does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code history
W31.3XXD has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share W31.3. If W31.3XXD is not quite right, the correct code is usually one of these.
Questions about W31.3XXD
- Is W31.3XXD a billable ICD-10-CM code?
- Yes. W31.3XXD is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does W31.3XXD sit in the tabular list?
- External causes of morbidity (V00-Y99), in the block Exposure to inanimate mechanical forces (W20-W49).
- What cannot be coded together with W31.3XXD?
- W31.3XXD carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above W31.3XXD (W31) and apply to it just the same.