It's a logo for a treatment plan with a clipboard with a paper. The clipboard is rectangular in shape and has a smaller rectangle on top to depict the clip. There is a piece of paper on the clipboard with a plus sign and vertical lines to show writing.
This is the Treatment icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.