Is W18.31XS a billable ICD-10-CM code?

Yes. W18.31XS is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does W18.31XS sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Slipping, tripping, stumbling and falls (W00-W19).

What cannot be coded together with W18.31XS?

W18.31XS 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 W18.31XS (W18.31) and apply to it just the same.

W18.31XS

W18.31XS — Fall on same level due to stepping on an object, sequela

Billable / specific codeICD-10-CMPOA exempt

W18.31XS is a billable, specific ICD-10-CM code for fall on same level due to stepping on an object, sequela. It is valid for submission on a claim.

7th character "S" — sequela

The appropriate 7th character is to be added to each code from category W18

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.

slipping, tripping and stumbling without fall due to stepping on animal (W18.41)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Fall on same level due to stepping on an animal

Excludes1 inherited from the categories above W18.31XS

These are not written on W18.31XS, but they bind it: a note on a category applies to every code beneath it. Billing W18.31XS with anything listed here is a denial.

Written on W18.31 — Fall on same level due to stepping on an object

slipping, tripping and stumbling without fall due to stepping on animal (W18.41)

Risk adjustment

W18.31XS 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

W18.31XS 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 W18.31. If W18.31XS is not quite right, the correct code is usually one of these.

Questions about W18.31XS

Is W18.31XS a billable ICD-10-CM code?: Yes. W18.31XS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does W18.31XS sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Slipping, tripping, stumbling and falls (W00-W19).
What cannot be coded together with W18.31XS?: W18.31XS 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 W18.31XS (W18.31) and apply to it just the same.