Hello everyone, I have an upcoming Sleep Apnea C & P exam on Feb. 21 2017. I filed a Sleep Apnea claim based on being (0%) service-connected for sleep apnea with a CPAP machine. The new claim is sleep apnea with a CPAP machine related to and /or service-connected (PTSD, Lumbar spine, right nerve sciatic, Both feet conditions, Both ankle conditions, both knee conditions, Weight gain/ obesity and decreased activity.) The VA called me and told that a C & P Doctor will be conducting my exam on Feb.21, 2017. The VA operator told me and left a voice mail message that I didn't have to show at this exam and that the C & P Doctor May or May Not call me. Can anyone please give me some advice in this matter. I would appreciate any advice. Thank You in advance.