W99 Exposure to other man-made environmental factors
ICD-10-CM category W99 sits in Chapter 20 (External causes of morbidity, V00-Y99). It contains 3 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Billable codes in W99
| Code | Description |
|---|---|
W99.XXXA | Exposure to other man-made environmental factors, initial encounter |
W99.XXXD | Exposure to other man-made environmental factors, subsequent encounter |
W99.XXXS | Exposure to other man-made environmental factors, sequela |
Search within ICD-10-CM for W99 and related codes
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