Is W88.8XXA a billable ICD-10-CM code?

Yes. W88.8XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does W88.8XXA sit in the tabular list?

External causes of morbidity (V00-Y99), in the block Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99).

What cannot be coded together with W88.8XXA?

W88.8XXA 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 W88.8XXA (W88) and apply to it just the same.

W88.8XXA

W88.8XXA — Exposure to other ionizing radiation, initial encounter

Billable / specific codeICD-10-CM

W88.8XXA is a billable, specific ICD-10-CM code for exposure to other ionizing radiation, initial encounter. It is valid for submission on a claim.

7th character "A" — initial encounter

The appropriate 7th character is to be added to each code from category W88

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above W88.8XXA

These are not written on W88.8XXA, but they bind it: a note on a category applies to every code beneath it. Billing W88.8XXA with anything listed here is a denial.

Written on W88 — Exposure to ionizing radiation

exposure to sunlight (X32)

Risk adjustment

W88.8XXA 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

W88.8XXA 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 W88.8. If W88.8XXA is not quite right, the correct code is usually one of these.

Questions about W88.8XXA

Is W88.8XXA a billable ICD-10-CM code?: Yes. W88.8XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does W88.8XXA sit in the tabular list?: External causes of morbidity (V00-Y99), in the block Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99).
What cannot be coded together with W88.8XXA?: W88.8XXA 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 W88.8XXA (W88) and apply to it just the same.