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

Code | Display | Definition
missing | Missing | The search parameter returns resources that have a value or not.
exact | Exact | The search parameter returns resources that have a value that exactly matches the supplied parameter (the whole string, including casing and accents).
contains | Contains | The search parameter returns resources that include the supplied parameter value anywhere within the field being searched.
not | Not | The search parameter returns resources that do not contain a match.
text | Text | The search parameter is processed as a string that searches text associated with the code/value - either CodeableConcept.text, Coding.display, Identifier.type.text, or Reference.display.
in | In | The search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the coding is in the specified value set.
not-in | Not In | The search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the coding is not in the specified value set.
below | Below | The search parameter tests whether the value in a resource is subsumed by the specified value (is-a, or hierarchical relationships).
above | Above | The search parameter tests whether the value in a resource subsumes the specified value (is-a, or hierarchical relationships).
type | Type | The search parameter only applies to the Resource Type specified as a modifier (e.g. the modifier is not actually :type, but :Patient etc.).
identifier | Identifier | The search parameter applies to the identifier on the resource, not the reference.
of-type | Of Type | The search parameter has the format system|code|value, where the system and code refer to an Identifier.type.coding.system and .code, and match if any of the type codes match. All 3 parts must be present.
code-text | Code Text | Tests whether the textual display value in a resource (e.g., CodeableConcept.text, Coding.display, or Reference.display) matches the supplied parameter value.
text-advanced | Text Advanced | Tests whether the value in a resource matches the supplied parameter value using advanced text handling that searches text associated with the code/value - e.g., CodeableConcept.text, Coding.display, or Identifier.type.text.
iterate | Iterate | The search parameter indicates an inclusion directive (_include, _revinclude) that is applied to an included resource instead of the matching resource.

# description
A supported modifier for a search parameter.

# concept[].definition
The search parameter returns resources that have a value or not.

# concept[].definition
The search parameter returns resources that have a value that exactly matches the supplied parameter (the whole string, including casing and accents).

# concept[].definition
The search parameter returns resources that include the supplied parameter value anywhere within the field being searched.

# concept[].definition
The search parameter returns resources that do not contain a match.

# concept[].definition
The search parameter is processed as a string that searches text associated with the code/value - either CodeableConcept.text, Coding.display, Identifier.type.text, or Reference.display.

# concept[].definition
The search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the coding is in the specified value set.

# concept[].definition
The search parameter is a URI (relative or absolute) that identifies a value set, and the search parameter tests whether the coding is not in the specified value set.

# concept[].definition
The search parameter tests whether the value in a resource is subsumed by the specified value (is-a, or hierarchical relationships).

# concept[].definition
The search parameter tests whether the value in a resource subsumes the specified value (is-a, or hierarchical relationships).

# concept[].definition
The search parameter only applies to the Resource Type specified as a modifier (e.g. the modifier is not actually :type, but :Patient etc.).

# concept[].definition
The search parameter applies to the identifier on the resource, not the reference.

# concept[].definition
The search parameter has the format system|code|value, where the system and code refer to an Identifier.type.coding.system and .code, and match if any of the type codes match. All 3 parts must be present.

# concept[].definition
Tests whether the textual display value in a resource (e.g., CodeableConcept.text, Coding.display, or Reference.display) matches the supplied parameter value.

# concept[].definition
Tests whether the value in a resource matches the supplied parameter value using advanced text handling that searches text associated with the code/value - e.g., CodeableConcept.text, Coding.display, or Identifier.type.text.

# concept[].definition
The search parameter indicates an inclusion directive (_include, _revinclude) that is applied to an included resource instead of the matching resource.