W89 — Exposure to man-made visible and ultraviolet light
W89 is a non-billable header ICD-10-CM code for exposure to man-made visible and ultraviolet light. 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 W89
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- exposure to sunlight (X32)
Includes
Conditions this code covers.
- exposure to welding light (arc)
Other codes that can never be billed with W89
These codes carry an Excludes1 note pointing at W89. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading W89 alone.
- X30Exposure to excessive natural heat
- X30.XXXAExposure to excessive natural heat, initial encounter
- X30.XXXDExposure to excessive natural heat, subsequent encounter
- X30.XXXSExposure to excessive natural heat, sequela
- X32Exposure to sunlight
- X32.XXXAExposure to sunlight, initial encounter
- X32.XXXDExposure to sunlight, subsequent encounter
- X32.XXXSExposure to sunlight, sequela
Risk adjustment
W89 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 W89
4 child codes. Green means billable.
Questions about W89
- Is W89 a billable ICD-10-CM code?
- No. W89 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does W89 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).