Medical Claims

I'll need to find out more about medical claims

• if AIA Healthshield is insufficient and my medisave is deducted, can I then claim from my company the balance that AIA couldn't cover?
• the lady at the NCC pharmacy where I bought Tamoxifen and Zoladex mentioned that I could claim these from AIA Healthshield. These are medication, not treatments, according to my agent. He said he'd check. I hope it's covered. It costs S$672 every 3 months.
• can other insurance companies accept the medical report that the doc wrote for AIA, thereby saving me S$86.65 per report? HH told me her mum's doc wrote it for her without the additional charge. Thank God for favour.