Malignant tumor of the kidney (renal cell carcinoma)
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.
While the cancer is active, medical records confirming the diagnosis and documentation of ongoing or recently completed treatment support the 100 percent rating. Pathology reports, operative reports, chemotherapy or radiation treatment records, and oncology notes all speak directly to this stage.
Once treatment ends and VA evaluates residuals, the evidence needed depends on whether renal or voiding dysfunction is predominant. For renal dysfunction, lab reports showing glomerular filtration rate (GFR) or estimated GFR measurements — taken by a medical professional and covering at least three consecutive months within the past twelve months — are central. Dialysis records or transplant eligibility documentation also apply at the highest level. For voiding dysfunction, records showing catheter use, the frequency and volume of absorbent material changes, urine flow studies, post-void residual measurements, or documentation of urinary tract infections and their treatment will reflect the appropriate level. Your own statements describing how urinary symptoms affect your daily activities and work can help show the frequency and severity of those symptoms.
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.