Re: why a repeat bone marrow biopsy?
I can't say what the insurance company will pay or not pay, but I do know that if the bone marrow showed changes from normal, the doctor wants to see if the changes are repairing or getting worse. If you catch a bone renewal process in the beginning it looks like abnormal, but if it is a renewal process the next look would see normal. If the changes have gotten worse, the cause might be more diagnoseable. It is not always a cancerous process. Some times it is a nutrition process or osteoporosis process. It is not pleasant but not malignant either.