Son had his wisdom teeth taken out a few weeks ago. He paid through his HSA plan. Yesterday he got like around $500 back from the oral surgeon. Would he have to put that back into his HSA or consider it like a regular check and just cash it? They only took 3 of his 4 wisdom teeth, so wondering if the might be the reason. He is going to get back with the oral surgeon to understand why he got it back. I've never had an HSA plan before so this something new to me. Anyone else have a similar type situation? TIA!