Although scholars have acknowledged technical texts written during the Middle-Ages, there is no mention of "technical writer" as a profession except for Geoffrey Chaucer, and historically absent is the accreditation of medieval female writers who pioneered the field of medical-technical communication. In an era dominated by identifiable medieval male technical writers, this article analyzes the medical texts of Hildegard von Bingen, which should be recognized as significant scientific and medical contributions to the field of medical-technical writing. Because the term "technical writing" or "technical writer" did not exist during the Middle Ages, accrediting female medieval scientific and medical writers as technical writers requires the application of modern thought and definition. Primarily known as a mystic and writer of poetry and music, Hildegard's technological and medical texts have slowly gained interest within the medical community. Her texts "Physica" and "Causae Curae," written in the style of modern-day patient history and physicals, outline patient symptoms, causes and effects, preceded by a treatment plan. This article examines Hildegard von Bingen's medical works, identifying her as a scientific or medical technical writer within the same context from which scholars assign Chaucer the same title, and from which all medical and scientific writers of medical texts can be professionally accredited as "technical communicator" or "writer."