W89.8XXA — Exposure to other man-made visible and ultraviolet light, initial encounter
Is W89.8XXA billable?
Yes — W89.8XXA is billable for FY2027. W89.8XXA is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. W89.8XXA may be submitted for encounters from October 1, 2026 through September 30, 2027.
W89.8XXA at a glance
| Code | W89.8XXA |
|---|---|
| Description | Exposure to other man-made visible and ultraviolet light, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in W89.8XXA?
In W89.8XXA, the 7th character A means initial encounter. The 7th character is required for W89.8XXA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is W89.8XXA listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under W89.8, the nearest indexed parent of W89.8XXA. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Exposure › sunlight › man-made (to)
- Radiation › light sources › specified NEC (exposure to)
- Radiation › man-made visible light › specified NEC (exposure to)
- Radiation › ultraviolet › specified NEC (exposure to)
Excludes1 — never code together — inherited from W85-W99
The conditions below can never be reported together with W89.8XXA on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from W89
The conditions below are not part of W89.8XXA, but a patient may have both at the same time. When documentation supports it, W89.8XXA and the excluded code may both be reported.
- exposure to sunlight (X32)
How long has W89.8XXA existed?
W89.8XXA has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.