Kristy,
I'm not sure it's being denied due to the diagnosis. It may be due to the circumstances. The following is a general guideline for billing the 77080:
* CPT 77078, CPT 77080, and CPT 0028T:
o Every two years for women older than 60 years of age.
o Every year for women on pharmacological therapy for osteoporosis.
o Every year for women or men of any age at high risk for osteoporosis or with a diagnosis listed in Payment Guidelines or currently on a prescribed course of steroids.
You need to determine if the 77080 is being denied across the board, or by one insurance carrier in particular. If it is the same carrier denying, I would call to inquire as to if it's being denied due to the diagnosis, or something else.
Michele