Pain in legs, feet, hands and arms, no vitamin def. No diabetes, what else could it be? Been told to take vitamin B6 for last 4 months not working.

Neuropathy. It sounds like your doctors have done a work-up for the common causes of neuropathy. This is a diffuse process that affects the peripheral nerves and leads to the symptoms of pain and tingling that you describe. There are additional tests like emgs, nerve conduction tests, and even nerve biopsies that can be done. However, these are frequently uncomfortable tests. Work with your neurologist.
Have it evaluated. Sounds like you may have arthritis. You may need to see a rheumatologist.