According to InteliHealth, "Hx" in medical terms means “history.” Intelihealth explains that this medical abbreviation can often be seen in doctor’s notes and medical charts.
An article written by Robert H. Shmerling, M.D. for InteliHealth links the continued use of shorthand and medical jargon to the increasing time pressure on healthcare professionals. Doctors write initial notes during a patient’s first visit. On the succeeding visits, the doctors write progress notes to record any changes or developments.
Dr. Shmerling advises that it is better for patients to ask their doctors directly via phone or email about any concerns they might have than to try to read and interpret medical records on their own.