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history identifier

hx_id
general
Updated 3/30/2026

Definition

The unique identifying value 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_id

Category

general

Database Usage

-- Example column naming
CREATE TABLE claims (
  claim_id VARCHAR(50),
  hx_id VARCHAR(100),  -- history identifier
  ...
);

-- Example in SELECT
SELECT 
  claim_id,
  hx_id as history_identifier
FROM claims;

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