Back to search

test external identifier

tst_ext_id
general
Updated 3/30/2026

Definition

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

Standard Abbreviation

tst_ext_id

Category

general

Database Usage

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

-- Example in SELECT
SELECT 
  claim_id,
  tst_ext_id as test_external_identifier
FROM claims;

Looking for more healthcare terms?

Browse our complete library of 65,000+ standardized healthcare data terms

Browse All Terms