If pth is 19 (range: 14-64) and calcium has been between 9.1-9.5. could this cause bone changes? do you need calcium? symptoms: bones feel smaller, like shrinking. muscle spasms in entire back rib area. joint pain?

Bone changes is a vague term. Discuss with your Dr who ordered tests as they know you. We do not.

Some people with hyperparathyroidism have normal calcum but high PTH, some have high calcium but normal calcium. Your calcium of 9.5 may be considered normal in some labs. I recommend that you consult an endocrinologist to sort out your situation since you're complaining of symptoms.