Which of the following abbreviations would indicate a patient's family history during a medical evaluation?

The abbreviation that indicates a patient's family history during a medical evaluation is "FHx." This term is commonly used in medical documentation to denote family history, which includes any health conditions or diseases that may have affected relatives, such as parents or siblings. Understanding a patient's family history is crucial as it can provide significant insights into potential genetic predispositions to certain diseases or conditions, aiding healthcare providers in making informed clinical decisions.

The other abbreviations do not specifically refer to family history. "Fx" typically stands for "fracture," often used when discussing injuries or musculoskeletal conditions. "HA" is an abbreviation for "headache," referencing a specific symptom rather than family background. "HPI" stands for "history of present illness," which includes detailed documentation of the current health issue from the patient's perspective but does not encompass family medical history.