What are the original records established to document the continuation of care given to a beneficiary?

The correct choice is primary records because they are the foundational documents created to capture and detail the specific care provided to a beneficiary. These records form the basis of medical history and treatment plans, ensuring continuity of care as they contain comprehensive information on the patient's medical encounters, assessments, diagnoses, treatments, and outcomes. Primary records are vital in maintaining accurate patient information, which is crucial for effective ongoing medical evaluation and intervention.

In contrast, secondary records refer to documents that support or supplement primary records but are not the initial sources of patient information. Supplemental records are additional records that offer extra context or details but are also not the main documents of care. Interim records are temporary documents created for specific situations, often to provide information between visits or as part of a transfer process, but they do not typically constitute the complete continuity of care documentation established in the primary records.