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history start time

hx_start_tm
general
Updated 3/30/2026

Definition

The beginning time value for a past medical events. Used to track temporal information related to history start 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_start_tm

Category

general

Database Usage

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

-- Example in SELECT
SELECT 
  claim_id,
  hx_start_tm as history_start_time
FROM claims;

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