Commonwealth of Massachusetts MassHealth Provider Manual Series Independent Clinical Laboratory Manual Subchapter Number and Title Table of Contents Page vi Transmittal Letter LAB-41 Date 01/01/13 6. Service Codes Introduction 6-1 Payable Laboratory Services 6-1 Modifiers 6-6 Appendix A. Directory A-1 Appendix B. Enrollment Centers B-1 Appendix C. Third-Party-Liability Codes C-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 and Messages Y-1 Appendix Z. EPSDT/PPHSD Screening Services Codes Z-1