I did cocaine 12 days before rhinoplasty, is that okay?

Cocaine use is associated with injury to the lining of the nose. While we often use medicinal dilute cocaine (4%) for shrinking the lining during surgery (in order to minimize bleeding and swelling), recreational use can cause temporary and permanent damage and cause unplanned issues with the rhinoplasty. Furthermore, obviously cocaine use does not have medicinal benefit when used recreationally and can't be sanctioned as "ok" for surgery in good conscience. Probably a good idea to discuss with your surgeon and consider a temporary delay in surgery.

Cocaine causes constriction of blood vessels and thus compromises blood supply.  Repeated use can lead to septal perforation and collapse of the nose.  The safest thing to do at this point would be to hold off on nasal surgery to allow your nose to recover.  Be honest with your surgeon, so he/she is aware of the issue and can help make the safest plan going forward.
Ziyad Hammoudeh, MD