The content blade looks for unformatted patterns of the U.S. Taxpayer Identification Number (ITIN). The content blade will match if an unformatted ITIN is found within close proximity of a word or phrase for an ITIN number (e.g. tax identification, ITIN).
ITIN Rule: 9-digit number that always begins with the number 9 and has a range of 70-88 in the fourth and fifth digit.