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Definition: This component contains the house number, apartment number, street name, street direction, P.O. Box number, and similar address information.

Definition: This component contains the second line of address. In US usage, it qualifies address. Examples: Suite 555 or Fourth Floor. When referencing an institution, this component specifies the street address.

Definition: This component specifies the city, or district or place where the addressee is located depending upon the national convention for formatting addresses for postal usage.

Definition: This component specifies the state or province where the addressee is located. State or province should be represented by the official postal service codes for that country.

Definition: This component specifies the zip or postal code where the addressee is located. Zip or postal codes should be represented by the official codes for that country. In the US, the zip code takes the form 99999[-9999], while the Canadian postal code takes the form A9A9A9, and the Australian Postcode takes the form 9999.

Definition: This component specifies the country where the addressee is located. HL7 specifies that the 3-character (alphabetic) form of ISO 3166 be used for the country code. Refer to HL7 Table 0399 – Country Code for valid values.

Definition: This component specifies the kind or type of address. Refer to HL7 Table 0190 - Address Type for valid values.

XAD.7 is required if there are multiple occurrences of XAD in a field.

Definition: This component specifies any other geographic designation. It includes county, bioregion, SMSA, etc.

Definition: A code that represents the county in which the specified address resides. User-defined Table 0289 - County/parish is used as the HL7 identifier for the user-defined table of values for this component. When this component is used to represent the county (or parish), component 8 <other geographic designation> should not duplicate it (i.e., the use of <other geographic designation> to represent the county is allowed only for the purpose of backward compatibility, and should be discouraged in this and future versions of HL7).

Allowable values: codes defined by government.

Definition: A code that represents the census tract in which the specified address resides. User-defined Table 0288 - Census Tract is used as the HL7 identifier for the user-defined table of values for this component.

Allowable Values: codes defined by government.

Definition: Different <name/address types> and representations of the same name/address should be described by repeating of this field, with different values of the <name/address type> and/or <name/address representation> component.

Refer to HL7 Table 0465 – Name/address Representation for valid values.

In general this component provides an indication of the representation provided by the data item. It does not necessarily specify the character sets used. Thus, even though the representation might provide an indication of what to expect, the sender is still free to encode the contents using whatever character set is desired. This component provides only hints for the receiver, so it can make choices regarding what it has been sent and what it is capable of displaying.

Attention: The XAD.12 component was retained for backward compatibility as of v2.5 and the detail was withdrawn and removed from the standard as of v2.7. Refer to2.A.86.13, "Effective Date (DTM)" and 2.A.86.14, "Expiration Date (DTM)" components.

Definition: The first date, if known, on which the address is valid and active for the ‘owning’ entity.

Definition: The last date, if known, on which the address is valid and active for the ‘owning’ entity.

Definition: This identifies why this address was marked as "ended". Refer to User-defined Table 0616 – Address Expiration Reason for valid values.

Definition: If "Y" this indicates that the address is considered temporary. Refer to HL7 Table 0136 – Yes/No Indicator.

Definition: If "Y", this indicates that it is not possible to contact the "owning" entity at this address. Refer to HL7 Table 0136 – Yes/No Indicator.

Definition: This indicates how the address is intended to be used. Refer to User-defined Table 0617 – Address Usage for valid values.

Definition: Identifies the name of the person or organization that should appear as part of the address. This is also known as the "Care of" or "C/O" line.

Definition: Descriptive information about the use of the address.

Example: "Do not ring bell."

Definition: For an entity having multiple addresses, indicates which is the 'most preferred' (lowest number) to 'least preferred' (highest number).

If the preference order is unique across all usages for a given type, then it indicates the preference across all usages, (e.g., first try my home address, then my business address). Otherwise, the preference order is assumed to only apply within a specific usage.

Preference order numbers need not be sequential (i.e., four addresses with the priority orders of 10, 1, 5 and 15 are legitimate). The preference order numbers must be non-negative.

Definition: Identifies that an address needs to be treated with special care or sensitivity.

The specific set of codes and appropriate handling of such addresses will vary by jurisdiction and is subject to site-specific negotiation. For example, a provider address marked as 'unlisted' might not be printed in an internal address listing. Refer to User-defined Table 0618 – Protection Code for valid values.

Definition: A unique identifier for the address.

This component allows an address to be uniquely identified, and enables the linking of a single address to multiple people and contexts. For example, each member of a family living at the same location would share the same address, having the same identifier. A correction to the address of one family member could be automatically propagated to other members of the family.