Data Dictionary: Estonian Health Insurance Fund (EHIF) Database

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Core patient data:

• ID number
• Name
• Date of birth
• Date of death
• Sex
• Address

Medical contacts data:

• Healthcare provider information
• Doctor information
• Type of healthcare
• Main and co-diagnoses
• Date of admission
• Date of discharge
• Regular procedures
• Surgical procedures
• Date of procedures
• Amount of procedures
• Diagnosis Related Groups (DRGs) for inpatient care

Outpatient care data:

• Date of admission
• Date of discharge
• Dispensing pharmacy information
• Diagnoses
• Discount rate
• Date of dispensing
• Date of purchase
• Active substance code
• Dispensed ATC Codes
• Dispensed dosages
• Level of content
• Total dispensed amount of medicine
• Number of packages
• Price of medicine
• Paid price
• Discount price
• Medical reason for prescription limitations

Incapacity to work data:

• Company where patient works
• Salary
• Start and end date of incapacity to work
• Reason for incapacity to work
• Type of incapacity

Diagnostic data:

• International Classification of Diseases, version 10 (ICD-10) codes for diagnoses
• Anatomical Therapeutic Chemical (ATC) Classification System codes for active substance of medicine
• NOMESCO Classification of Surgical Procedures codes for surgical procedures

Miscellaneous data:

• Dates and frequencies of procedures and laboratory tests
• Insurance status
• Obesity and alcohol abuse codes as diagnoses
• Patient's contact data (i.e., address, telephone number, etc.) from Population Registry
• Healthcare provider information from Business Register
• Insurance status information from Employment Registry
• No information on vaccinations, laboratory results, and physical examination results.