Alternate Name	Item#	Length	Source of Standard	Column #
State--Current (CoC)	1820	2	CoC	2181-2182

Description
USPS abbreviation for the state, territory, commonwealth, U.S. possession, or CanadaPost abbreviation for the Canadian province/territory of the patient's current usual residence. If the patient has multiple tumors, the current state of residence should be the same for all tumors.

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 via letter or telephone calls to ascertain 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 the U.S. and Canadian postal service abbreviations)

CD	Resident of Canada, NOS (province/territory unknown)
US	Resident of United States, NOS (state/commonwealth/territory/possession unknown)
XX	Resident of country other than the United States (including its territories, commonwealths, or possessions) or Canada, and country is known
YY	Resident of country other than the United States (including its territories, commonwealths, or possessions) or Canada, and country is unknown
ZZ	Residence unknown