The Registered Healthcare Documentation Specialist (RHDS) exam is based on the AHDI Medical Transcriptionist Job Descriptions and the competencies outlined in the AHDI Core Competencies and the AHDI Model Curriculum. It is a voluntary credentialing exam for individuals who wish to become Registered Healthcare Documentation Specialists. The RHDS exam is designed to assess competency in healthcare documentation by determining if a candidate has the core knowledge and skills needed to practice healthcare documentation effectively in today's healthcare environment.