# text.div
This code system http://hl7.org/fhir/search-param-type defines the following codes:

Code | Display | Definition
number | Number | Search parameter SHALL be a number (a whole number, or a decimal).
date | Date/DateTime | Search parameter is on a date/time. The date format is the standard XML format, though other formats may be supported.
string | String | Search parameter is a simple string, like a name part. Search is case-insensitive and accent-insensitive. May match just the start of a string. String parameters may contain spaces.
token | Token | Search parameter on a coded element or identifier. May be used to search through the text, display, code and code/codesystem (for codes) and label, system and key (for identifier). Its value is either a string or a pair of namespace and value, separated by a "|", depending on the modifier used.
reference | Reference | A reference to another resource (Reference or canonical).
composite | Composite | A composite search parameter that combines a search on two values together.
quantity | Quantity | A search parameter that searches on a quantity.
uri | URI | A search parameter that searches on a URI (RFC 3986).
special | Special | Special logic applies to this parameter per the description of the search parameter.

# description
Data types allowed to be used for search parameters.

# concept[].definition
Search parameter SHALL be a number (a whole number, or a decimal).

# concept[].definition
Search parameter is on a date/time. The date format is the standard XML format, though other formats may be supported.

# concept[].definition
Search parameter is a simple string, like a name part. Search is case-insensitive and accent-insensitive. May match just the start of a string. String parameters may contain spaces.

# concept[].definition
Search parameter on a coded element or identifier. May be used to search through the text, display, code and code/codesystem (for codes) and label, system and key (for identifier). Its value is either a string or a pair of namespace and value, separated by a "|", depending on the modifier used.

# concept[].definition
A reference to another resource (Reference or canonical).

# concept[].definition
A composite search parameter that combines a search on two values together.

# concept[].definition
A search parameter that searches on a quantity.

# concept[].definition
A search parameter that searches on a URI (RFC 3986).

# concept[].definition
Special logic applies to this parameter per the description of the search parameter.