Some of my suggestios based on what I could find...
- Blood and Guts A History of Surgery By Richard Hollingham
Not a story based book or necessarily teen/YA but it looks very interesting.
Y/A graphic novel about anxiety and growing up.
- Just Like Always by Elizabeth-Ann Sachs
Two young (teen?) girls share a hospital room while getting treatment.
- The Incurable Wound by Berton Roueché
- Diagnosis : Solving the Most Baffling Medical Mysterie by Lisa Sanders