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history time

hx_tm
general
Updated 3/30/2026

Definition

The time of day value for a past medical events. Used to track temporal information related to history time. 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_tm

Category

general

Database Usage

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

-- Example in SELECT
SELECT 
  claim_id,
  hx_tm as history_time
FROM claims;

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