Doctor's note question, Is this valid?

Hi all just wondering. I had a phone visit with a doctor for an illness and I asked him to include that I would not be able to come in today and would return on Monday. However he just put that I was seen on a phone visit. Should I call him again to change that or what?
My school just has a policy of requiring a doctor's note when off from rotations and just wondering the note is valid. Just want to cover my tracks. Thanks.