Hx

Medical Abbreviation
Hx

Hx stands for History.

What does Hx mean?

HX (or Hx) stands for history, meaning a patient medical history, the record of past illnesses, treatments, and health information.

HX, often written as Hx, stands for history. In medicine it refers to a patient medical history, which is the account of their past and present health, including previous illnesses, operations, medications, allergies, and family background. Taking a good history is one of the first and most important steps in assessing any patient.

Hx appears in many combined forms in medical notes. Common ones include PMHx or PMH (past medical history), FHx (family history), SHx (social history), and Dx (diagnosis). You may also see notes like neg hx (negative history, meaning no relevant past problems) or no hx of a condition.

A clear history helps guide examination, tests, and treatment, so Hx is one of the most frequently used abbreviations in clinical practice.

When is Hx used?

Used across all areas of medicine. Hx refers to a patient medical history and appears in forms like PMHx, FHx, and SHx.

Frequently asked questions

What does HX mean?

HX, or Hx, means history, usually a patient medical history of past illnesses, treatments, and health.

What does Hx stand for in medical terms?

Hx stands for history.

What does neg hx mean?

Neg hx means negative history, meaning there is no relevant past medical problem.

What is FHx?

FHx means family history, the health background of a patient family.

What is the difference between Hx and Dx?

Hx means history (the patient background), while Dx means diagnosis (what the patient has).

Related abbreviations

FHx · SHx · PMH · Dx

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Study reference only — not medical advice. Always consult qualified sources and supervisors for clinical decisions.