I'm sorry you got this diagnosis. When you go for the appointment
1. Look at the lab repot.
2. Get a thorough discussion of not only the grade of CIN you have, but where it's located, how many cervical quadrants are involved, if it's in the endocervical canal, and if you have dysplasia in the endocervical glands.
3, Get a full discussion of the risks and benefits of all your treatment options - cryosurgery, laser, LEEP, and cold knife cone biopsy - before a recommendation. This is a requirement, per regulations.
4. When your doctor recommends one of the surgeries, find out how experienced the doctor is, how many of those surgeries the doctor does per year, and if the doctor has ever sent a patient to a different doctor to do a different surgery if he or she is not experienced enough to do it, but the patient qualifies for it. This will tell you if your doctor wants to do what is best for you or just wants to make money and keep the insurance company happy, at the same time. You only want a doctor who does what is best for you.
It's scary enough to go through this. But by educating yourself, it will remove the mystery, which takes away a lot of the fear. It will also get you actively involved with your healthcare so that your doctor works in partnership with you rather than just doing something to you. Knowledge is power! It is critical for both your physical and emotional health that your decisions are informed.