Deviated Septum and Droopy Nose?

 A septoplasty is performed when a deviated septum is present which is blocking air flow and is submitted to insurance for medical necessity. A rhinoplasty is performed to change the shape of the nose is considered cosmetic and must be paid for by the patient's themselves

It sounds like the front part of your septum is not straight, and lacks its normal connection with your tip cartilages.  This can be relocated to a more normal position with a septoplasty, and your tip given better support.  However you are likely to get a much more reliable result in terms of your dropped tip and crookedness by have an open tip rhinoplasty done.