If you’re looking to specialize further, consider advanced degrees in areas like radiology, clinical nutrition, or health administration. You need to have a bachelor's degree in a relevant field, such as engineering science, mathematics, statistics, public health, or allied health sciences for doing msc health informatics so yes you are eligible to do MSC health informatics.

Admission in MSC health informatics is based on entrance test conducted by university for example manipal university conducts their own entrance exam called MAHE.

https://www.careers360.com/courses/health-informatics-course