Pharmazentralnummer (PZN) is a variant of Code 39 - Regular that is used for the distribution and marking of health care and pharmaceutical products in Germany. Two versions are available: PZN7, which encodes six digits plus a check digit, and PZN8, which encodes seven digits plus a check digit. PZN7 is currently being phased out, and after January 1, 2020, only PZN8 will be used.
PZN is defined in the Technische Hinweise zur PZN-Codierung document that is published by Informationsstelle für Arzneispezialitäten (IFA) GmbH.
The symbol comprises the following elements:
Leading quiet zone
Start character (an asterisk [*])
Symbol characters that represent data (including a mandatory check digit)
Stop character (an asterisk [*])
Trailing quiet zone
The human readable interpretation displays the characters "PZN - ". These characters are not encoded into the barcode.
This symbology supports the following alphanumeric characters:
All numeric digits (0-9)
All uppercase letters (A-Z)
The following symbols:
Percent sign (%)
Plus sign (+)
Dollar sign ($)
Slash mark (/)
PZN contains a check digit that is based on the modulo 11 (mod 11) algorithm.
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