Updated for 2027 and organized by systems, the 2027 Ob-Gyn Coding Manual is the go-to billing and coding resource for obstetrician-gynecologists and their staff. Navigate the biggest changes to obstetric coding in years with comprehensive guidance on the new maternity care services code set. The 2027 Ob-Gyn Coding Manual supports billing, coding, preauthorization requirements, claims appeals, and more. Inside the 2027 Edition: Comprehensive information on the new maternity care services code set, organized around five phases of care: antepartum care, labor management, delivery care, postpartum care, and postpartum procedures Appendices featuring tables for quick reference of the coding guidelines, including a new appendix for the maternity care services codes New billing guidelines for separately reporting antepartum care, labor management, delivery care, postpartum visits, and post-delivery procedures using appropriate evaluation and management (E/M) services and procedure codes Coding tips and practical scenarios for key telemedicine, preventive, emergency department, and office and hospital E/M services. Coding guidance and case-based scenarios for ob-gyn surgical procedures based on questions submitted through ACOG's Payment Advocacy and Policy Portal The 2027 Ob-Gyn Coding Manual follows established CPT guidelines and includes Medicare guideline information for accurately reporting medical procedures. It represents the expert opinions of ACOG staff and members of the ACOG Committee on Health Economics and Coding about the specific services included (or not included) in each ob-gyn procedure code listed.