The “codice fiscale” is an alphanumeric code of 16 characters issued for free by the “Agenzia delle Entrate” (Revenue Agency) to identify Italian citizens and foreign residents.
You need to have your own “codice fiscale” to:
- enroll at an Italian university
- open a bank account
- sign any type of contract (rental, phone line, …)
- register at the National Healthcare Service (SSN)