Exposure to man-made visible and ultraviolet light
In Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99), chapter 20: External Causes of Morbidity
12 billable codes under W89: none are a CC or MCC; none map to an HCC.
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Instructional notes
Includes: conditions that are coded here
- exposure to welding light (arc)
Excludes2: not included here, code separately if applicable
- exposure to sunlight (X32)
Also applies, from Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99)
These notes sit on W85-W99 and apply to every code under it, including W89.
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers how to report external cause codes (V00-Y99) describing cause, intent, place, activity, and status. They are never principal or first-listed, and reporting is voluntary unless required.
- General External Cause Coding Guidelines (page 88)
- Place of Occurrence Guideline (page 89)
- Activity Code (page 89)
- Place of Occurrence, Activity, and Status Codes Used with other External Cause Code (page 89)
- If the Reporting Format Limits the Number of External Cause Codes (page 90)
- Multiple External Cause Coding Guidelines (page 90)
- Child and Adult Abuse Guideline (page 90)
- Unknown or Undetermined Intent Guideline (page 91)
All codes under W89
W89 can't be used on a claim. Pick a billable code below; grey headings group them.
- W89.0Exposure to welding light (arc)
- W89.0XXAExposure to welding light (arc), initial encounter
- W89.0XXDExposure to welding light (arc), subsequent encounter
- W89.0XXSExposure to welding light (arc), sequela
- W89.1Exposure to tanning bed
- W89.1XXAExposure to tanning bed, initial encounter
- W89.1XXDExposure to tanning bed, subsequent encounter
- W89.1XXSExposure to tanning bed, sequela
- W89.8Exposure to other man-made visible and ultraviolet light
- W89.8XXAExposure to other man-made visible and ultraviolet light, initial encounter
- W89.8XXDExposure to other man-made visible and ultraviolet light, subsequent encounter
- W89.8XXSExposure to other man-made visible and ultraviolet light, sequela
- W89.9Exposure to unspecified man-made visible and ultraviolet light
- W89.9XXAExposure to unspecified man-made visible and ultraviolet light, initial encounter
- W89.9XXDExposure to unspecified man-made visible and ultraviolet light, subsequent encounter
- W89.9XXSExposure to unspecified man-made visible and ultraviolet light, sequela
W89 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
Other codes that refer to W89
Notes on these codes point to W89.
- L56 Use Additional Code: code to identify the source of the ultraviolet radiation (W89, X32)
- L57 Use Additional Code: code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90)
- X30 Excludes1: exposure to man-made radiation (W89)
- X30 Excludes1: exposure to tanning bed (W89)
- X32 Excludes1: man-made radiation (tanning bed) (W89)
Code history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.