If you currently have a disability rating of 60% and add chronic kidney disease (code 7533), here are all the possibilities of adding it to an existing 60% rating:
If you qualify for 100% CKD, the combined total is 100%.
If you qualify for 80% CKD, the combined total is 90%.
If you qualify for 60% CKD, the combined total is 80%.
If you qualify for 30% CKD, the combined total is 70%.