ICD-10-CM category
W99: Exposure to other man-made environmental factors
Codes under W99 (Exposure to other man-made environmental factors). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| 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 | ✓ |
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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