I am a chiropractic assistant for a Dr. that has just started accepting insurance. So far, all our patients with insurance coverage have Aetna. (due to a workplace screening) I am attempting to educate myself on the basics of filling out and submitting a HCFA, and have a few questions. Don't laugh.
(We are using Office Ally's clearinghouse)
1) For example... A new patient receives an exam on their first visit, and also has a 3-v cervical x-ray series taken, I would use codes 99204 and 72050 in 24D. When entering this information on the HCFA, would I enter each code on a separate line with the same date of service? Or can you only bill for one code per day??
Would the same apply if the same patient comes in for a ROF visit at their next appointment and also receives an adjustment? Can I bill for both 99242 and 98940?
2) Also, from what I understand, I don't use modifiers with Aetna?
3) In box 24J, what is the difference between the NPI, and PIN numbers? NPI is National Providers Identification, I assume? Why would I need to fill it out for every date of service?? And what is the PIN?
Thank you, Thank you, Thank you for your help!