It generally depends on whether or not operating room facilities are used with a period (even brief) of observation afterwards.
Cataract surgery as a day procedure is definitely covered, so is any other surgery requiring use of an Operating Room.
I had epidural spinal injections covered as a day surgery.
Simple incision & drainage, if done in doctor's office/outpatient clinic, would not be covered. A large I&D requiring use of OR would be.
Some policies cover endoscopies. I am not sure that April does, but you should ask broker.