Release 5

This page is part of the FHIR Specification (v5.0.0: R5 - STU). This is the current published version. For a full list of available versions, see the Directory of published versions

4.3.2.413 CodeSystem http://hl7.org/fhir/permission-rule-combining

Security

Work Group

Maturity Level: 0

Trial Use

Use Context: Country: World

Official URL: `http://hl7.org/fhir/permission-rule-combining`				Version: 5.0.0
active as of 2022-08-05				Computable Name: PermissionRuleCombining
Flags: CaseSensitive, Complete				OID: 2.16.840.1.113883.4.642.4.2070

This Code system is used in the following value sets:

ValueSet: Permission Rule Combining (Codes identifying rule combining algorithm.)

4.3.2.413.1 Definition

Codes identifying the rule combining. See XACML Combining algorithms http://docs.oasis-open.org/xacml/3.0/xacml-3.0-core-spec-cos01-en.html

4.3.2.413.2 Content

This code system http://hl7.org/fhir/permission-rule-combining defines the following codes:

Code	Display	Definition	Copy
deny-overrides	Deny-overrides	The deny overrides combining algorithm is intended for those cases where a deny decision should have priority over a permit decision.
permit-overrides	Permit-overrides	The permit overrides combining algorithm is intended for those cases where a permit decision should have priority over a deny decision.
ordered-deny-overrides	Ordered-deny-overrides	The behavior of this algorithm is identical to that of the “Deny-overrides” rule-combining algorithm with one exception. The order in which the collection of rules is evaluated SHALL match the order as listed in the permission.
ordered-permit-overrides	Ordered-permit-overrides	The behavior of this algorithm is identical to that of the “Permit-overrides” rule-combining algorithm with one exception. The order in which the collection of rules is evaluated SHALL match the order as listed in the permission.
deny-unless-permit	Deny-unless-permit	The “Deny-unless-permit” combining algorithm is intended for those cases where a permit decision should have priority over a deny decision, and an “Indeterminate” or “NotApplicable” must never be the result. It is particularly useful at the top level in a policy structure to ensure that a PDP will always return a definite “Permit” or “Deny” result.
permit-unless-deny	Permit-unless-deny	The “Permit-unless-deny” combining algorithm is intended for those cases where a deny decision should have priority over a permit decision, and an “Indeterminate” or “NotApplicable” must never be the result. It is particularly useful at the top level in a policy structure to ensure that a PDP will always return a definite “Permit” or “Deny” result. This algorithm has the following behavior.

See the full registry of code systems defined as part of FHIR.

Explanation of the columns that may appear on this page:

Level

A few code lists that FHIR defines are hierarchical - each code is assigned a level. See Code System for further information.

Source

The source of the definition of the code (when the value set draws in codes defined elsewhere)

Code

The code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')

Display

The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application

Definition

An explanation of the meaning of the concept

Comments

Additional notes about how to use the code