Immigrants and refugees will get a "replacement CPR number", which is outside the normal space/range of CPR numbers. Once registered as living in Denmark, they'll get a real CPR number.
Danish SSNs doesn't have a long or short form, you used the seventh digit to do a table lookup to see if the person is born in 18XY, 19XY or 20XY. The date of birth is always ddmmyy, there is no long form. So if the seventh digit is 9, and the 5-6 digit is between 00 and 36, then you're born in between 2000 and 2036, if the 5-6 digits are 37 to 99, then your born in the 1900. But you need the published table to figure that out.
Last point, there is backup system for unconscious patients, but it should be the same across all medical records as these are somewhat standardized.
Danish SSNs doesn't have a long or short form, you used the seventh digit to do a table lookup to see if the person is born in 18XY, 19XY or 20XY. The date of birth is always ddmmyy, there is no long form. So if the seventh digit is 9, and the 5-6 digit is between 00 and 36, then you're born in between 2000 and 2036, if the 5-6 digits are 37 to 99, then your born in the 1900. But you need the published table to figure that out.
Last point, there is backup system for unconscious patients, but it should be the same across all medical records as these are somewhat standardized.