Alternate Name	Item#	Length	Source of Standard	Column #
Postal Code--Current (CoC)	1830	9	CoC	2183-2191

Description
Postal code for the address of the patient's current usual residence. If the patient has multiple tumors, the postal codes should be the same. For U.S. residents, use either the 5-digit or the extended 9-digit ZIP code. Blanks follow the 5-digit code. For Canadian residents, use the 6-character alphanumeric postal code. Blanks follow the 6-character code. When available, enter postal code for other countries.

Rationale
"Current address" can be used to measure the regional "cancer burden" (cost, medical care needs), especially in major retirement regions. Sometimes central registries carry out follow-up by contacting the patients by a letter or telephone calls to ascertain their vital status. The most current reported address and telephone number are needed. This information also is useful for conducting interview studies.

Codes (in addition to U.S., Canadian, and Foreign postal codes)

888888888	Resident of country other than the United States (including its possessions, etc.) or Canada, and postal code unknown
999999999	Resident of the United States (including its possessions, etc.) and postal code unknown
999999	Resident of Canada and postal code unknown