ICD-10-CM Diagnosis Code (2025)
Official Description for Y99
External cause status
Coding Notes & Guidelines for Y99
- military activity (Y99.1)
- volunteer activity (Y99.2)
activity of off duty military personnel (Y99.8)
activity of child or other family member assisting in compensated work of other family member (Y99.8)
- civilian activity done for income or compensation (Y99.0)
- military activity (Y99.1)
Civilian activity done for financial or other compensation
- Activity NEC
- Activity of child or other family member assisting in compensated work of other family member
- Hobby not done for income
- Leisure activity
- Off-duty activity of military personnel
- Recreation or sport not for income or while a student
- Student activity
Child Codes (More Specific Codes for Y99):
About ICD-10-CM Code Y99 (External cause status)
ICD-10-CM code Y99 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 Y99 became effective on October 1, 2024.
This page provides detailed information about Y99 - External cause status. 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 External cause status.