I worked in insurance for over five years. One of the more common reasons we had to send out HIPAA notification letters was due to relatives in the same city with similar or identical names getting claims processed under the wrong policy. These were very often two male relatives -- father and son, twin brothers, cousins. They sometimes even lived on the same street. There's also this story about two women with the sa…
Here in Italy we are given a Codice Fiscale at birth, which is a string of 13 characters derived by 3 letters of the last name, 3 letters of the first name (usually these 6 letters are all consonants, but there are exceptions for names like Anna), 2 digits, a letter and two other digits representing the birth day, one letter and the digits representing the birthplace an one last letter which is a checksum. These are…
[0]: It's the "999999-9996" on https://i.imgur.com/GscmMjX.jpg