Issue # and location
Issue summary
Zip codes are handled as strings of up to 9 characters length. For US addresses, these represent either a 3-digit abbreviated Zip code as provided by many sources for patient protection reasons, the full 5-digit Zip or the 9-digit (ZIP + 4) codes. Unless for specific reasons analytical methods should expect and utilize only the first 3 digits. For international addresses, different rules apply. 1
Convention type
Table
CDM table
LOCATION
CDM field
zip
Links to issue discussion
Provenance of data
General
The ratified convention
The zip field houses both US zip code and non-US post codes.
Date of ratification/published
Downstream implications
No
Link to DQD check
No