ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
Y90-Y99 Supplementary factors related to causes of morbidity classified elsewhere /
Y99 External cause status
Billable ICD-10-CM Code Y99.8
Y99.8
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Other external cause status 
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Activity NEC
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Activity of child or other family member assisting in compensated work of other family member
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Hobby not done for income
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Leisure activity
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Off-duty activity of military personnel
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Recreation or sport not for income or while a student
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Student activity
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excludes1
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civilian activity done for income or compensation (Y99.0) |
military activity (Y99.1) |
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