W89.9XXA
✓ Billable
Exposure to unspecified man-made visible and ultraviolet light, initial encounter
ICD-10-CM · FY2026 · External Causes of Morbidity
Code
W89.9XXA
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
External Causes of Morbidity
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code W89.9XXA?
ICD-10-CM code W89.9XXA represents Exposure to unspecified man-made visible and ultraviolet light, initial encounter. It is a billable diagnosis code in the External Causes of Morbidity chapter, effective October 1, 2025 – September 30, 2026.
Is W89.9XXA billable?
Yes. W89.9XXA is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is W89.9XXA in?
W89.9XXA belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.
Related codes in the W89 category
W89
Exposure to man-made visible and ultraviolet light
Non-billable
W89.0
Exposure to welding light (arc)
Non-billable
W89.1
Exposure to tanning bed
Non-billable
W89.8
Exposure to other man-made visible and ultraviolet light
Non-billable
W89.9
Exposure to unspecified man-made visible and ultraviolet light
Non-billable
W89.0XXA
Exposure to welding light (arc), initial encounter
Billable
W89.0XXD
Exposure to welding light (arc), subsequent encounter
Billable
W89.0XXS
Exposure to welding light (arc), sequela
Billable
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