What does the term 'encounter' refer to in medical billing?

• A. An appointment reminder.
• B. A lab result report.
• C. A billing claim submission.
• D. An interaction between a patient and a health care provider.

Answer: (D)

In medical billing, an encounter refers to the actual interaction between a patient and a health care provider during which clinical services are provided and documented for coding and billing. This encounter is the event that generates the data used to assign CPT/HCPCS codes and ICD-10-CM diagnoses, reflecting the services rendered, the procedures performed, and the patient’s status during the visit. Administrative tasks like appointment reminders aren’t clinical encounters, and lab result reports are outputs of testing rather than the patient-provider interaction. A billing claim submission is the request for payment built from the encounter’s data, not the encounter itself.