When considering treatment for macromastia, it is essential to understand not only the medical indications but also the frameworks of Japan's healthcare and health insurance systems.
In particular, regarding breast reduction surgery, it is difficult to say that its handling is clearly defined within the system, making it an area prone to misunderstanding.
This page outlines the general approach to treating macromastia and the handling of treatment costs within Japan's healthcare system.
Under Japan's current public health insurance system, breast reduction surgery for macromastia itself is not covered by insurance as a standard treatment (as of 2026).
Breast reduction surgery is often treated as an out-of-pocket procedure, and there are no clearly defined, nationally uniform rules for insurance coverage.