ICD-10-CM Diagnosis Code (2025)
Official Description for W99
Exposure to other man-made environmental factors
Coding Notes & Guidelines for W99
The appropriate 7th character is to be added to code W99
- A: initial encounter
- D: subsequent encounter
- S: sequela
About ICD-10-CM Code W99 (Exposure to other man-made environmental factors)
ICD-10-CM code W99 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM W99 became effective on October 1, 2024.
This page provides detailed information about W99 - Exposure to other man-made environmental factors. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Exposure to other man-made environmental factors.