RHIT vs CCS Certification. Both the RHIT and CCS/CCS-P certifications are offered by AHIMA. The CCS certification shows that you are a master of medical coding. The RHIT certification will enable you to move beyond coding and into other health information jobs.HIT vs CCS Certification. Both the RHIT and CCS/CCS-P certifications are offered by AHIMA. The CCS certification shows that you are a master of medical coding. The RHIT certification will enable you to move beyond coding and into other health information jobs.