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history onset date

hx_onset_dt
general
Updated 3/30/2026

Definition

The symptom start date for a past medical events. Used to track temporal information related to history onset date. 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_onset_dt

Category

general

Database Usage

-- Example column naming
CREATE TABLE claims (
  claim_id VARCHAR(50),
  hx_onset_dt VARCHAR(100),  -- history onset date
  ...
);

-- Example in SELECT
SELECT 
  claim_id,
  hx_onset_dt as history_onset_date
FROM claims;

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