I was asking about this some time back. If you are awaiting a diagnosis for something or waiting to hear back about tests etc, you cannot get insured
I had various posters tell me that I could, it was easy, lots of insurers would do that etc etc and when asked what companies the posters didnt return
I also think that lots of people dont actually answer the questions honestly, so they are waiting for test results or further investigation but dont say that
If you have been diagnosed but are simply waiting for the treatment/intervention that is also ok, so knee surgery above etc skin cancer, the insurance is fine once you've been diagnosed but if you can only say on your application that you've been to the doctor and waiting for tests/diagnosis they wouldnt have been able to get cover at all.
I now have annual insurance, but have realised that throughout the year, Im now in a position where the GP is investigating something else that Ive asked for, so Im not sure if that makes my insurance invalid.
So it depends on the way the questions are laid out and what its asking
Im with staysure