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prescription external identifier

rx_ext_id
pharmacy
Updated 3/30/2026

Definition

The external system reference id for a medication order. Used as a unique reference to identify and track the prescription across healthcare systems. This field is commonly used in electronic health records (EHR), healthcare information systems (HIS), and clinical data warehouses for prescription management and reporting.

Standard Abbreviation

rx_ext_id

Category

pharmacy

Database Usage

-- Example column naming
CREATE TABLE claims (
  claim_id VARCHAR(50),
  rx_ext_id VARCHAR(100),  -- prescription external identifier
  ...
);

-- Example in SELECT
SELECT 
  claim_id,
  rx_ext_id as prescription_external_identifier
FROM claims;

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