PTSD diagnosis changed at C&P exam

[grayling12]

I am helping a coworker out with his claim for PTSD. He is an Iraq war veteran and was initialy diagnosed by a VA Psychiatrist with having PTSD so he filed a disability claim for it. When he went to his C&P exam the examiner opined that he had a personality disorder and not PTSD and was denied. His VSO hasn't given him any worthwhile advice on how to proceed. He is approaching his one year deadline to file for an appeal, he has about a month left.
Question:
1. Is it too late to request a new C&P exam?
2. Can he claim a CUE due to the differing diagnoses?
3. Should he file the appeal then try to get an independant diagnoses to back up his original VA diagnoses of PTSD?

4. What would be needed to get a new C&P exam?

[Berta]

Right- so why did the C & P examiner go against the VA Psychiatrist's diagnosis?

He needs to complain and I agree, make sure he appeals this ASAP!

But then again we do not have all of the facts.

[Dustoff1970]

Yet maybe another VSO screw up as I know from my own bitter experience from many years ago and learned to do everything myself (successfully) for past 30 years.  You are receiving good advice from Berta, Broconvet, and others.  It would be helpful to post the C&P examiners notes for us to help him.  Redact any personal information about him.