Commonwealth of Massachusetts MassHealth Provider Manual Series Subchapter Number and Title Table of Contents Page vi Freestanding Ambulatory Surgery Center Manual Transmittal Letter FAS-26 Date 01/01/13 6. Service Codes Payable Surgery Services 6-1 Modifiers 6-12 Modifiers for Provider Preventable Conditions That Are National Coverage Determinations 6-12 Appendix A. Directory . A-1 Appendix B. Enrollment Centers B-1 Appendix C. Third-Party-Liability Codes . C-1 Appendix D. (Reserved) Appendix E Admission Guidelines E-1 Appendix U. DPH-designated Serious Reportable Events That Are Not Provider Preventable Conditions U-1 Appendix V. MassHealth Billing Instructions for Provider Preventable Conditions V-1 Appendix W. EPSDT Services Medical and Dental Protocols and Periodicity Schedules W-1 Appendix X. Family Assistance Copayments and Deductibles X-1 Appendix Y. EVS Codes/Messages Y-1 Appendix Z. EPSDT/PPHSD Screening Services Codes Z-1