Is W51.XXXS a billable ICD-10-CM code?

Yes. W51.XXXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does W51.XXXS sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Exposure to animate mechanical forces (W50-W64).

What cannot be coded together with W51.XXXS?

W51.XXXS 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 W51.XXXS (W51) and apply to it just the same.

W51.XXXS

W51.XXXS — Accidental striking against or bumped into by another person, sequela

Billable / specific codeICD-10-CM

W51.XXXS is a billable, specific ICD-10-CM code for accidental striking against or bumped into by another person, sequela. It is valid for submission on a claim.

7th character "S" — sequela

The appropriate 7th character is to be added to code W51

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

assault by striking against or bumping into by another person (Y04.2)
fall due to collision with another person (W03)

Excludes1 inherited from the categories above W51.XXXS

These are not written on W51.XXXS, but they bind it: a note on a category applies to every code beneath it. Billing W51.XXXS with anything listed here is a denial.

Written on W51 — Accidental striking against or bumped into by another person

assault by striking against or bumping into by another person (Y04.2)
fall due to collision with another person (W03)

Risk adjustment

W51.XXXS 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

W51.XXXS 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 W51. If W51.XXXS is not quite right, the correct code is usually one of these.

Questions about W51.XXXS

Is W51.XXXS a billable ICD-10-CM code?: Yes. W51.XXXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does W51.XXXS sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Exposure to animate mechanical forces (W50-W64).
What cannot be coded together with W51.XXXS?: W51.XXXS 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 W51.XXXS (W51) and apply to it just the same.