W99.XXXABillable
Exposure to other man-made environmental factors, initial encounter
Short description: Exposure to oth man-made environmental factors, init encntr
- Chapter
- 20. External causes of morbidity
- Category
- W99
- Effective date
- October 1, 2026
Related codes in category W99
Frequently asked questions
What is ICD-10 code W99.XXXA?
W99.XXXA is an ICD-10-CM diagnosis code for Exposure to other man-made environmental factors, initial encounter.
Is W99.XXXA a billable code?
Yes. W99.XXXA is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is W99.XXXA in?
W99.XXXA falls under Chapter 20: External causes of morbidity.
When did W99.XXXA become effective?
W99.XXXA has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to W99.XXXA?
W99.XXXA belongs to category W99, which includes 3 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.