Employee claiming pulmonary embolism. Possible to fake this?

We have an employee who is milking the system to the max. So far he has been out for months with a shoulder problem (of course, nothing that shows up on x-rays). One day before he was due to get back to work (had a miracle "recovery" just before his regular sick time ran out) he claims now that he has a pulmonary embolism. Is that something that can be faked? He just found a way to milk more free sick time when his shoulder miraculously healed itself. This guy is a total "plug" and won't do a stitch of work to save his life. We work for the state, and they roll out the red carpet for lowlife leeches like him. We're hoping for something to bag him on.