Ptosis Surgery Billing

Medicare used to accept: 67904-50 and 15823-51-RT and15823-51-LT as the correct codes for bilateral ptosis repair and blepharoplasty...as of April 1, 2009 Medicare evidently changed the policy; stating modifier 51 is not to be used. But our office cannot find the correct modifier to use.....any suggestions, or help????

Ptosis

Bilateral: Use modifier 50 for CPT codes 15822-15823, 67901-67904, 67906, and 67908 when performed bilaterally.

Unilateral: Use modifier E1 (upper left eyelid) or E3 (upper right eyelid) for codes 15822-15823, 67901-67904, 67906, and 67908 when performed unilaterally.

medicare does not require modifier 51.