Canadian Ontario Health Pattern

(?i:\b[0-9]{4} [0-9]{3} [0-9]{3}[A-Z]?\b)

Matches an alphanumeric string of the format NNNN NNN NNNA delimited by space. Begins with a 10-digit number followed by an alphabet [A-Z] (not case-sensitive).

1

(?i:\b[0-9]{4}-[0-9]{3}-[0-9]{3}[A-Z]?\b)

Matches an alphanumeric string of the format NNNN-NNN-NNNA delimited by hyphen. Begins with a 10-digit number followed by an alphabet [A-Z] (not case-sensitive).

1

(?i:\b[0-9]{10}[A-Z]?\b)

Matches an alphanumeric string of the format NNNNNNNNNNA without a delimiter. Begins with a 10-digit number followed by an alphabet [A-Z] (not case-sensitive).

1