If Then Statement To Run A Macro

is it possible to write an if then statement in a macro (in Excel) in order to run a specific portion of it. I.e. If C4="blank" then continue running the macro, if not skip to a lower portion of the macro.

I'm attempting to write a macro to format specific sections of a generated output from another system. The issue is that there could be 2 sections or 75 sections, so I would have to write the if then to skip repeating the macro and skip to the end, which would format the footer, once it hits a specific blank cell 2 lines below the last section it formatted.