---
type: "codesystem"
title: "Days Of Week"
codesystem: "days-of-week"
---
# Days Of Week

- **Official URL**: http://hl7.org/fhir/days-of-week
- **Version**: 6.0.0
- **Status**: active
- **Name**: DaysOfWeek
- **Title**: Days Of Week
- **Publisher**: HL7 International / FHIR Infrastructure
- **Description**: The days of the week.
- **Case Sensitive**: true
- **Content**: complete

## Concepts

| Code | Display | Definition |
| --- | --- | --- |
| mon | Monday | Monday. |
| tue | Tuesday | Tuesday. |
| wed | Wednesday | Wednesday. |
| thu | Thursday | Thursday. |
| fri | Friday | Friday. |
| sat | Saturday | Saturday. |
| sun | Sunday | Sunday. |

## CodeSystem XML



```xml
<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="days-of-week"/>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="fhir"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="normative"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="5"/>
  </extension>
  <url value="http://hl7.org/fhir/days-of-week"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.4.513"/>
  </identifier>
  <identifier>
    <use value="old"/>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.1.507"/>
  </identifier>
  <identifier>
    <use value="old"/>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.2.302"/>
  </identifier>
  <version value="6.0.0"/>
  <name value="DaysOfWeek"/>
  <title value="Days Of Week"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2021-01-05T10:01:24+11:00"/>
  <publisher value="HL7 International / FHIR Infrastructure"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://www.hl7.org/Special/committees/fiwg"/>
    </telecom>
  </contact>
  <description value="The days of the week."/>
  <caseSensitive value="true"/>
  <valueSet value="http://hl7.org/fhir/ValueSet/days-of-week"/>
  <content value="complete"/>
  <concept>
    <code value="mon"/>
    <display value="Monday"/>
    <definition value="Monday."/>
  </concept>
  <concept>
    <code value="tue"/>
    <display value="Tuesday"/>
    <definition value="Tuesday."/>
  </concept>
  <concept>
    <code value="wed"/>
    <display value="Wednesday"/>
    <definition value="Wednesday."/>
  </concept>
  <concept>
    <code value="thu"/>
    <display value="Thursday"/>
    <definition value="Thursday."/>
  </concept>
  <concept>
    <code value="fri"/>
    <display value="Friday"/>
    <definition value="Friday."/>
  </concept>
  <concept>
    <code value="sat"/>
    <display value="Saturday"/>
    <definition value="Saturday."/>
  </concept>
  <concept>
    <code value="sun"/>
    <display value="Sunday"/>
    <definition value="Sunday."/>
  </concept>
</CodeSystem>
```