Is W49.01XS a billable ICD-10-CM code?

Yes. W49.01XS is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does W49.01XS 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 W49.01XS?

W49.01XS 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 W49.01XS (W49) and apply to it just the same.

W49.01XS

W49.01XS — Hair causing external constriction, sequela

Billable / specific codeICD-10-CMPOA exempt

W49.01XS is a billable, specific ICD-10-CM code for hair causing external constriction, 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 W49

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above W49.01XS

These are not written on W49.01XS, but they bind it: a note on a category applies to every code beneath it. Billing W49.01XS with anything listed here is a denial.

Written on W49 — Exposure to other inanimate mechanical forces

exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)

Risk adjustment

W49.01XS 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

W49.01XS 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 W49.01. If W49.01XS is not quite right, the correct code is usually one of these.

Questions about W49.01XS

Is W49.01XS a billable ICD-10-CM code?: Yes. W49.01XS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does W49.01XS 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 W49.01XS?: W49.01XS 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 W49.01XS (W49) and apply to it just the same.