Needing no organ transplant is capital (7)
I believe the answer is:
rangoon
'is capital' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for rangoon that I've seen before include "Former capital of Burma" , "Former Burmese capital" , "Burma's capital" , "It's now Yangon in Myanmar" , "Alternative name for Yangon" .)