{"caseSensitive":true,"concept":[{"code":"semver","definition":"Uses the semantic versioning scheme as defined in [semver.org](http://semver.org).","display":"SemVer"},{"code":"integer","definition":"Versions are integers and ordered numerically","display":"Integer"},{"code":"alpha","definition":"Simple alphabetic sort on a case-insensitive and accent-insensitive basis. (Sorting of different cases or accented versions of a character is indeterminate)","display":"Alphabetical"},{"code":"date","definition":"Versions are expressed as an ISO date/time syntax (including syntaxes with only portions of a date) in the general format of YYYY-MM-DD (with or without separators). Inclusion of the time portion is optional.","display":"Date"},{"code":"natural","definition":"Sorted according to the algorithm defined here: [naturalordersort.org](http://www.naturalordersort.org/)","display":"Natural"},{"code":"major-minor","definition":"Similar to semver, but having only two components - i.e. a major and minor (integer) version number separated by a '.'. The specific nature of what constitutes a major vs. minor increment is locally defined.","display":"Major/Minor"},{"code":"sct-url","definition":"Versions are expressed according to the SNOMED URL scheme. See the [Versions](https://terminology.hl7.org/SNOMEDCT.html#versions) topic for more details.","display":"SNOMED-CT URL"},{"code":"us-date","definition":"Versions are expressed as an US date format, i.e. MMDDYYYY (with or without separators).","display":"US Date"}],"contact":[{"telecom":[{"system":"url","value":"http://hl7.org/fhir"},{"system":"email","value":"fhir@lists.hl7.org"}]},{"telecom":[{"system":"url","value":"http://www.hl7.org/Special/committees/dss"}]}],"content":"complete","date":"2021-01-05T10:01:24+11:00","description":"Indicates the mechanism used to compare versions to determine which is more current.","experimental":false,"extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-wg","valueCode":"cds"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status","valueCode":"normative"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm","valueInteger":5}],"id":"version-algorithm","identifier":[{"system":"urn:ietf:rfc:3986","value":"urn:oid:2.16.840.1.113883.4.642.4.1989"}],"jurisdiction":[{"coding":[{"code":"001","display":"World","system":"http://unstats.un.org/unsd/methods/m49/m49.htm"}]}],"meta":{"lastUpdated":"2026-03-31T18:55:04.283+00:00"},"name":"VersionAlgorithm","publisher":"HL7 International / Clinical Decision Support","resourceType":"CodeSystem","status":"active","text":{"div":"

Generated Narrative: CodeSystem version-algorithm

This case-sensitive code system http://hl7.org/fhir/version-algorithm defines the following codes:

CodeDisplayDefinition
semver SemVer

Uses the semantic versioning scheme as defined in semver.org.

\n
integer Integer

Versions are integers and ordered numerically

\n
alpha Alphabetical

Simple alphabetic sort on a case-insensitive and accent-insensitive basis. (Sorting of different cases or accented versions of a character is indeterminate)

\n
date Date

Versions are expressed as an ISO date/time syntax (including syntaxes with only portions of a date) in the general format of YYYY-MM-DD (with or without separators). Inclusion of the time portion is optional.

\n
natural Natural

Sorted according to the algorithm defined here: naturalordersort.org

\n
major-minor Major/Minor

Similar to semver, but having only two components - i.e. a major and minor (integer) version number separated by a '.'. The specific nature of what constitutes a major vs. minor increment is locally defined.

\n
sct-url SNOMED-CT URL

Versions are expressed according to the SNOMED URL scheme. See the Versions topic for more details.

\n
us-date US Date

Versions are expressed as an US date format, i.e. MMDDYYYY (with or without separators).

\n
","status":"generated"},"title":"Version Algorithm","url":"http://hl7.org/fhir/version-algorithm","valueSet":"http://hl7.org/fhir/ValueSet/version-algorithm","version":"6.0.0-ballot4"}