Blue Cross of Idaho Logo

Express Sign-on

Thank you for registering with Blue Cross of Idaho

If you are an Individual or Family Member, please register here.

If you are a Medicare Advantage or Medicare Supplement member, please register here.


Bilateral Billing for Ambulatory Surgery Centers

Provider Administrative Policy

Provider Information
Policy Date
October 2013
New/October 2013
Provider Type(s)
Ambulatory Surgery Centers  


Our provider administrative policies contain information regarding claims submission, reimbursement, and other information in order to achieve an efficient relationship with our providers. These policies are not an authorization or explanation of benefits. Blue Cross of Idaho retains the right to add to, delete from and otherwise modify this policy in accordance with our provider contracts


Bilateral Billing for Ambulatory Surgery Centers

Medicare allows for two methods of billing for bilateral procedures. However, Blue Cross of Idaho requires ambulatory surgery centers billing for these procedures to submit this information on two separate lines and include modifier 51 on the second line. We will not process single line claims with modifier 50 at the correct allowance. Appending modifier RT/LT is not required.

Policy History

Date Action Reason

Search for Policies

Policy Feedback

Resource Center

Find a Provider Find a Pharmacy Medicare Medicare Formulary