Cancer of plasma cells (type of blood cancer) causing bone lesions and kidney issues
VA doesn't add ratings together. It combines them using the table in 38 CFR § 4.25, so two ratings usually total less than their sum.
To support a 100% rating for symptomatic multiple myeloma, medical records showing a confirmed diagnosis of symptomatic multiple myeloma are central. Validated biomarkers accepted by the American Society of Hematology and the International Myeloma Working Group can establish this diagnosis, so laboratory results, bone marrow biopsy reports, imaging studies, and blood or urine protein tests that reflect those biomarkers are all relevant.
After the five-year period at 100%, a mandatory VA examination will assess your current status. At that point, records of ongoing treatment, specialist notes, and any test results showing whether your condition remains symptomatic or has changed would be relevant to what rating follows. Statements from you or your treating providers about how your symptoms affect your daily life and ability to work can also help give VA a full picture of your condition at any stage.
VA exam form (DBQ) for this condition:
If your service meets the rules below, VA presumes this condition is connected to it.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.