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

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

Where does W51.XXXA 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.XXXA?

W51.XXXA carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

W51.XXXA

W51.XXXA — Accidental striking against or bumped into by another person, initial encounter

Billable / specific codeICD-10-CM

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

7th character "A" — initial encounter

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)

Risk adjustment

W51.XXXA 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.

Related codes at this level

Codes that share W51. If W51.XXXA is not quite right, the correct code is usually one of these.

Questions about W51.XXXA

Is W51.XXXA a billable ICD-10-CM code?: Yes. W51.XXXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does W51.XXXA 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.XXXA?: W51.XXXA carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.