Hello Crocky.You can get the V.A.T. knocked off.I don't know of any code.Your doctors sound a bit more obliging than ours .The doctor refused to prescribe test strips,saying i didn't need to test because i am only a type 2 diabetic.The best of luck with sensors.I bought a starter kit 6 months ago.They are very good for detecting blood sugar spikes.It assisted me greatly in reversing my diabetes.Although i found the sensors vary a lot in accuracy,some were way out , 7 or 8 mml .So you will still have to prick your finger to check,