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history medical record number

hx_mrn
general
Updated 3/30/2026

Definition

The patient medical record number for a past medical events. Used as a unique reference to identify and track the history across healthcare systems. This field is commonly used in electronic health records (EHR), healthcare information systems (HIS), and clinical data warehouses for history management and reporting.

Standard Abbreviation

hx_mrn

Category

general

Database Usage

-- Example column naming
CREATE TABLE claims (
  claim_id VARCHAR(50),
  hx_mrn VARCHAR(100),  -- history medical record number
  ...
);

-- Example in SELECT
SELECT 
  claim_id,
  hx_mrn as history_medical_record_number
FROM claims;

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