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Narrative

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Source1

{
  "resourceType": "CodeSystem",
  "id": "us-military-service-period",
  "meta": {
    "lastUpdated": "2026-05-11T00:00:00.000+00:00",
    "profile": [
      "http://hl7.org/fhir/StructureDefinition/shareablecodesystem"
    ]
  },
  "language": "en",
  "text": {
    "status": "generated",
    "div": "<!-- snip (see above) -->"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "cgp"
    }
  ],
  "url": "http://terminology.hl7.org/CodeSystem/us-military-service-period",
  "version": "1.0.0",
  "name": "USMilitaryServicePeriod",
  "title": "US Military Service Period",
  "status": "active",
  "experimental": false,
  "date": "2026-05-11T00:00:00-04:00",
  "publisher": "Health Level Seven International",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org"
        },
        {
          "system": "email",
          "value": "hq@HL7.org"
        }
      ]
    }
  ],
  "description": "Defines codes to identify discrete periods of United States military service, used to capture when an individual served in the armed forces.",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "urn:iso:std:iso:3166",
          "code": "US"
        }
      ]
    }
  ],
  "copyright": "This material derives from the HL7 Terminology (THO). THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license",
  "caseSensitive": true,
  "content": "complete",
  "count": 9,
  "concept": [
    {
      "code": "post-911",
      "display": "September 2001 or later (Post 9/11)",
      "definition": "Military service occurring on or after September 2001, encompassing the post-9/11 era."
    },
    {
      "code": "persian-gulf-war",
      "display": "August 1990 through August 2001 (including the Persian Gulf War)",
      "definition": "Military service occurring between August 1990 and August 2001, encompassing the Persian Gulf War era."
    },
    {
      "code": "period-1975-1990",
      "display": "June 1975 through July 1990",
      "definition": "Military service occurring between June 1975 and July 1990."
    },
    {
      "code": "vietnam-war",
      "display": "August 1964 through May 1975 (including the Vietnam War)",
      "definition": "Military service occurring between August 1964 and May 1975, encompassing the Vietnam War era."
    },
    {
      "code": "period-1955-1964",
      "display": "February 1955 through July 1964",
      "definition": "Military service occurring between February 1955 and July 1964."
    },
    {
      "code": "korean-war",
      "display": "June 1950 through January 1955 (including the Korean War)",
      "definition": "Military service occurring between June 1950 and January 1955, encompassing the Korean War era."
    },
    {
      "code": "period-1947-1950",
      "display": "January 1947 through May 1950",
      "definition": "Military service occurring between January 1947 and May 1950."
    },
    {
      "code": "world-war-ii",
      "display": "December 1941 through December 1946 (including World War II)",
      "definition": "Military service occurring between December 1941 and December 1946, encompassing World War II."
    },
    {
      "code": "pre-1941",
      "display": "November 1941 or earlier",
      "definition": "Military service occurring on or before November 1941."
    }
  ]
}