Is W50 a billable ICD-10-CM code?

No. W50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does W50 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 W50?

W50 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

W50

W50 — Accidental hit, strike, kick, twist, bite or scratch by another person

Non-billable headerICD-10-CM

W50 is a non-billable header ICD-10-CM code for accidental hit, strike, kick, twist, bite or scratch by another person. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category W50

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 bodily force (Y04)
struck by objects (W20-W22)

Includes

Conditions this code covers.

hit, strike, kick, twist, bite, or scratch by another person NOS

Risk adjustment

W50 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 to one of these instead W50

5 child codes. Green means billable.

Questions about W50

Is W50 a billable ICD-10-CM code?: No. W50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does W50 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 W50?: W50 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.