Program Operations Manual System (POMS)
Basic (02-02)
GN 01740.315 Facts About the Chilean Insurance Numbers
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Persons who made contributions under the old system may have been assigned a Social
Insurance Number.
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In 1980, Chile began issuing a National Personal Identification Number, known by the
Spanish acronym RUT, to all Chilean residents. The RUT has 9 characters (8 numbers
followed by a dash and a number or the letter K).