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chemistry onset date

chem_onset_dt
general
Updated 3/30/2026

Definition

The symptom start date for a chemical analysis. Used to track temporal information related to chemistry onset date. This field is commonly used in electronic health records (EHR), healthcare information systems (HIS), and clinical data warehouses for chemistry management and reporting.

Standard Abbreviation

chem_onset_dt

Category

general

Database Usage

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

-- Example in SELECT
SELECT 
  claim_id,
  chem_onset_dt as chemistry_onset_date
FROM claims;

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