Can I Put My Nephew On My Health Insurance? 
No , a nephew does not generally fall within the criteria of being an immediate family member -LRB- like a spouse and/or natural born children -RRB- from the legal perspective of state insurance departments and insurance carriers . The notable exception to this would be in the case where you have assumed legal guardianship for your nephew and have a court order making you the responsible adult for caring for your nephew . 