"i've also been in contact with my insurance company, and they're telling me that if i can come up with an article proving that the severity of my nipple retraction will most likely prevent me from breast feeding, then they will cover my procedure. if you know of any articles that would be helpful. thanks!"
Nipple inversion can cause functional problems. The condition can be a source of irritation and inflammation, and it may prevent lactation. (reference #1)
Moderate to severe inversion means that the nipple retracts deeply when the areola is compressed, to a level even with or underneath the areola. A nipple with moderate to severe inversion might make latching-on and breastfeeding difficult, but treatment and deep latch techniques can help. --La Leche League
Breastfeeding -- Women's Health.Gov
Breastfeeding with Flat or Inverted Nipples --ask DrSears
Will my insurance coverage pay for my nipple inversion repair surgery?REFERENCES regarding surgical treatment
Nipple inversion repair is a cosmetic procedure and, therefore, not covered by insurance. ........... In rare cases where severe nipple refraction prevents breastfeeding, insurance may pay for all or part of the procedure.
7. Nipple Inversion Repair; The Metropolitan Institute for Plastic Surgery, Washington DC