diff --git a/dist/21-526EZ-ALLCLAIMS-schema.json b/dist/21-526EZ-ALLCLAIMS-schema.json
index 856e5e555..dd4516dae 100644
--- a/dist/21-526EZ-ALLCLAIMS-schema.json
+++ b/dist/21-526EZ-ALLCLAIMS-schema.json
@@ -543,6 +543,21 @@
         "to"
       ]
     },
+    "minimumYearDateRange": {
+      "type": "object",
+      "properties": {
+        "startDate": {
+          "$ref": "#/definitions/minimumYearDate"
+        },
+        "endDate": {
+          "$ref": "#/definitions/minimumYearDate"
+        }
+      }
+    },
+    "minimumYearDate": {
+      "pattern": "^(?:19|20)[0-9][0-9]-(0[1-9]|1[0-2]|XX)-(0[1-9]|[1-2][0-9]|3[0-1]|XX)$",
+      "type": "string"
+    },
     "ratedDisabilities": {
       "type": "array",
       "maxItems": 100,
@@ -771,6 +786,145 @@
         }
       }
     },
+    "toxicExposure": {
+      "type": "object",
+      "properties": {
+        "gulfWar1990Details": {
+          "type": "object",
+          "properties": {
+            "afghanistan": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "bahrain": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "egypt": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "iraq": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "israel": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "jordan": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "kuwait": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "neutralzone": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "oman": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "qatar": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "saudiarabia": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "somalia": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "syria": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "uae": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "turkey": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "waters": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "airspace": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            }
+          }
+        },
+        "gulfWar2001Details": {
+          "type": "object",
+          "properties": {
+            "djibouti": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "lebanon": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "uzbekistan": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "yemen": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "airspace": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            }
+          }
+        },
+        "herbicideDetails": {
+          "type": "object",
+          "properties": {
+            "cambodia": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "guam": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "koreandemilitarizedzone": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "johnston": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "laos": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "c123": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "thailand": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "vietnam": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            }
+          }
+        },
+        "otherExposuresDetails": {
+          "type": "object",
+          "properties": {
+            "asbestos": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "chemical": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "mos": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "mustardgas": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "radiation": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            },
+            "water": {
+              "$ref": "#/definitions/minimumYearDateRange"
+            }
+          }
+        },
+        "otherHerbicideLocations": {
+          "$ref": "#/definitions/minimumYearDateRange"
+        },
+        "specifyOtherExposures": {
+          "$ref": "#/definitions/minimumYearDateRange"
+        }
+      }
+    },
     "serviceInformation": {
       "type": "object",
       "required": [
diff --git a/dist/definitions.json b/dist/definitions.json
index d401a7381..9c6d05f6d 100644
--- a/dist/definitions.json
+++ b/dist/definitions.json
@@ -1039,6 +1039,21 @@
       "null"
     ]
   },
+  "minimumYearDate": {
+    "pattern": "^(?:19|20)[0-9][0-9]-(0[1-9]|1[0-2]|XX)-(0[1-9]|[1-2][0-9]|3[0-1]|XX)$",
+    "type": "string"
+  },
+  "minimumYearDateRange": {
+    "type": "object",
+    "properties": {
+      "startDate": {
+        "$ref": "#/definitions/minimumYearDate"
+      },
+      "endDate": {
+        "$ref": "#/definitions/minimumYearDate"
+      }
+    }
+  },
   "requiredDate": {
     "type": "string",
     "pattern": "^\\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])$"
diff --git a/package.json b/package.json
index d694ec0ee..de74d6fad 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vets-json-schema",
-  "version": "24.3.3",
+  "version": "24.4.0",
   "license": "CC0-1.0",
   "repository": {
     "type": "git",
diff --git a/src/common/definitions.js b/src/common/definitions.js
index 99717508d..fa0eec8ca 100644
--- a/src/common/definitions.js
+++ b/src/common/definitions.js
@@ -484,6 +484,18 @@ const dateRange = {
   },
 };
 
+const minimumYearDateRange = {
+  type: 'object',
+  properties: {
+    startDate: {
+      $ref: '#/definitions/minimumYearDate',
+    },
+    endDate: {
+      $ref: '#/definitions/minimumYearDate',
+    },
+  },
+};
+
 const date = {
   pattern: '^(\\d{4}|XXXX)-(0[1-9]|1[0-2]|XX)-(0[1-9]|[1-2][0-9]|3[0-1]|XX)$',
   type: 'string',
@@ -494,6 +506,16 @@ const nullableDate = {
   type: ['string', 'null'],
 };
 
+// currently being used primarily by the 526EZ app for toxic exposure dates,
+// which technically require either just YYYY or YYYY-MM. Partial dates are not
+// yet supported in the FE, but dates with X's still occasionally get through.
+// Since the BE knows how to parse XX for the month and day, the below regex
+// still allows XX for them- however, the year MUST be valid and with no X's
+const minimumYearDate = {
+  pattern: '^(?:19|20)[0-9][0-9]-(0[1-9]|1[0-2]|XX)-(0[1-9]|[1-2][0-9]|3[0-1]|XX)$',
+  type: 'string',
+};
+
 // XXXX-XX-XX not allowed
 const requiredDate = {
   type: 'string',
@@ -987,6 +1009,8 @@ export default {
   dateRange,
   date,
   nullableDate,
+  minimumYearDate,
+  minimumYearDateRange,
   requiredDate,
   rejectOnlyWhitespace,
   dischargeType,
diff --git a/src/schemas/21-526EZ-allclaims/schema.js b/src/schemas/21-526EZ-allclaims/schema.js
index 45f5a2ffe..7d17ec8ca 100644
--- a/src/schemas/21-526EZ-allclaims/schema.js
+++ b/src/schemas/21-526EZ-allclaims/schema.js
@@ -139,6 +139,8 @@ const schema = {
     vaTreatmentCenterAddress: vaTreatmentCenterAddressDef,
     dateRange: definitions.dateRange,
     dateRangeAllRequired: _.set('required', ['from', 'to'], definitions.dateRange),
+    minimumYearDateRange: definitions.minimumYearDateRange,
+    minimumYearDate: definitions.minimumYearDate,
     ratedDisabilities: _.merge(disabilitiesBaseDef, {
       minItems: 1,
       items: {
@@ -275,6 +277,145 @@ const schema = {
         },
       },
     },
+    toxicExposure: {
+      type: 'object',
+      properties: {
+        gulfWar1990Details: {
+          type: 'object',
+          properties: {
+            afghanistan: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            bahrain: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            egypt: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            iraq: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            israel: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            jordan: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            kuwait: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            neutralzone: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            oman: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            qatar: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            saudiarabia: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            somalia: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            syria: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            uae: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            turkey: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            waters: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            airspace: {
+              $ref: '#/definitions/minimumYearDateRange'
+            }
+          }
+        },
+        gulfWar2001Details: {
+          type: 'object',
+          properties: {
+            djibouti: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            lebanon: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            uzbekistan: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            yemen: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            airspace: {
+              $ref: '#/definitions/minimumYearDateRange'
+            }
+          }
+        },
+        herbicideDetails: {
+          type: 'object',
+          properties: {
+            cambodia: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            guam: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            koreandemilitarizedzone: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            johnston: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            laos: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            c123: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            thailand: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            vietnam: {
+              $ref: '#/definitions/minimumYearDateRange'
+            }
+          }
+        },
+        otherExposuresDetails: {
+          type: 'object',
+          properties: {
+            asbestos: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            chemical: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            mos: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            mustardgas: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            radiation: {
+              $ref: '#/definitions/minimumYearDateRange'
+            },
+            water: {
+              $ref: '#/definitions/minimumYearDateRange'
+            }
+          }
+        },
+        otherHerbicideLocations: {
+          $ref: '#/definitions/minimumYearDateRange'
+        },
+        specifyOtherExposures: {
+          $ref: '#/definitions/minimumYearDateRange'
+        }
+      }
+    },
     serviceInformation: {
       type: 'object',
       required: ['servicePeriods'],
diff --git a/test/common/definitions.spec.js b/test/common/definitions.spec.js
index 9150ec035..26b4d2944 100644
--- a/test/common/definitions.spec.js
+++ b/test/common/definitions.spec.js
@@ -490,4 +490,25 @@ describe('schema definitions', () => {
     valid: ['a@a.com', 'a@a.net', 'a+2@a.com', 'Foo@foo.com', 'foo.bar@foo.org'],
     invalid: ['@', 'foo', 'foo.com', 'a@a', 'a@a.', '@a.com'],
   });
+
+  testValidAndInvalidDefinitions('minimumYearDateRange', {
+    valid: [
+      { startDate: '2009-03-22', endDate: '2010-06-22'},
+      { startDate: '2009-03-22'},
+      { endDate: '2010-06-22'},
+      { startDate: '2009-03-XX', endDate: '2010-06-22'},
+      { startDate: '2009-03-22', endDate: '2010-06-XX'},
+      { startDate: '2009-XX-XX', endDate: '2010-06-22'},
+      { startDate: '2009-03-22', endDate: '2010-XX-XX'},
+      { startDate: '2009-XX-XX'},
+      { endDate: '2010-XX-XX'},
+      { startDate: '2009-XX-22', endDate: '2010-XX-22'},
+    ],
+    invalid: [
+      { startDate: 'XXXX-01-02' },
+      { endDate: '79-01-02' },
+      { startDate: '2009-03-22', endDate: 'XXXX-01-02' },
+      { startDate: '79-01-02', endDate: '2009-03-XX' },
+    ]
+  });
 });
diff --git a/test/schemas/21-526EZ/schema.spec.js b/test/schemas/21-526EZ/schema.spec.js
index 9487e6a09..dc85cf1c5 100644
--- a/test/schemas/21-526EZ/schema.spec.js
+++ b/test/schemas/21-526EZ/schema.spec.js
@@ -125,6 +125,102 @@ const data = {
       { from: 'bar', to: fixtures.dateRange },
     ],
   },
+  minimumYearDateRange: {
+    valid: testData.minimumYearDateRange.data.valid,
+    invalid: [
+      { startDate: 'XXXX-01-02' },
+      { endDate: '79-01-02' },
+      { startDate: fixtures.minimumYearDateRange.startDate, endDate: 'XXXX-01-02' },
+      { startDate: '79-01-02', endDate: fixtures.minimumYearDateRange.endDate },
+    ],
+  },
+  gulfWar1990Details: {
+    valid: [
+      { afghanistan: fixtures.minimumYearDateRange },
+      { bahrain: fixtures.minimumYearDateRange },
+      { egypt: fixtures.minimumYearDateRange },
+      { iraq: fixtures.minimumYearDateRange },
+      { israel: fixtures.minimumYearDateRange },
+      { jordan: fixtures.minimumYearDateRange },
+      { kuwait: fixtures.minimumYearDateRange },
+      { neutralzone: fixtures.minimumYearDateRange },
+      { oman: fixtures.minimumYearDateRange },
+      { qatar: fixtures.minimumYearDateRange },
+      { saudiarabia: fixtures.minimumYearDateRange },
+      { somalia: fixtures.minimumYearDateRange },
+      { syria: fixtures.minimumYearDateRange },
+      { uae: fixtures.minimumYearDateRange },
+      { turkey: fixtures.minimumYearDateRange },
+      { waters: fixtures.minimumYearDateRange },
+      { airspace: fixtures.minimumYearDateRange },
+      { airspace: fixtures.minimumYearDateRange, jordan: fixtures.minimumYearDateRange },
+      { airspace: fixtures.minimumYearDateRange, jordan: fixtures.minimumYearDateRange, syria: fixtures.minimumYearDateRange },
+    ],
+    invalid: [
+      { afghanistan: { startDate: 'XXXX-01-01', endDate: '79-01-02' } },
+      { turkey: { startDate: '79-01-02' } },
+      { qatar: { startDate: 'XXXX-01-02', endDate: '1999-01-02' } },
+      { qatar: { startDate: 'XXXX-01-02', endDate: '1999-01-02' }, turkey: { startDate: '1999-01-02' } },
+    ]
+  },
+  gulfWar2001Details: {
+    valid: [
+      { djibouti: fixtures.minimumYearDateRange },
+      { lebanon: fixtures.minimumYearDateRange },
+      { uzbekistan: fixtures.minimumYearDateRange },
+      { yemen: fixtures.minimumYearDateRange },
+      { airspace: fixtures.minimumYearDateRange },
+      { airspace: fixtures.minimumYearDateRange, uzbekistan: fixtures.minimumYearDateRange },
+      { airspace: fixtures.minimumYearDateRange, uzbekistan: fixtures.minimumYearDateRange, djibouti: fixtures.minimumYearDateRange },
+    ],
+    invalid: [
+      { yemen: { startDate: 'XXXX-01-01', endDate: '79-01-02' } },
+      { djibouti: { startDate: '79-01-02' } },
+      { lebanon: { startDate: 'XXXX-01-02', endDate: '1999-01-02' } },
+      { lebanon: { startDate: '1999-01-02', endDate: '79-01-02' }, turkey: { startDate: '1999-01-02' } },
+      { lebanon: { startDate: 'XXXX-01-02', endDate: '1999-01-02' }, turkey: { endDate: '1999-01-02' } },
+    ]
+  },
+  herbicideDetails: {
+    valid: [
+      { cambodia: fixtures.minimumYearDateRange },
+      { guam: fixtures.minimumYearDateRange },
+      { koreandemilitarizedzone: fixtures.minimumYearDateRange },
+      { johnston: fixtures.minimumYearDateRange },
+      { laos: fixtures.minimumYearDateRange },
+      { c123: fixtures.minimumYearDateRange },
+      { thailand: fixtures.minimumYearDateRange },
+      { vietnam: fixtures.minimumYearDateRange },
+      { vietnam: fixtures.minimumYearDateRange, laos: fixtures.minimumYearDateRange },
+      { vietnam: fixtures.minimumYearDateRange, laos: fixtures.minimumYearDateRange, koreandemilitarizedzone: fixtures.minimumYearDateRange },
+    ],
+    invalid: [
+      { guam: { startDate: 'XXXX-01-01', endDate: '79-01-02' } },
+      { koreandemilitarizedzone: { startDate: '79-01-02' } },
+      { laos: { startDate: 'XXXX-01-02', endDate: '1999-01-02' } },
+      { laos: { startDate: '1999-01-02', endDate: '79-01-02' }, turkey: { endDate: '1999-01-02' } },
+      { laos: { startDate: 'XXXX-01-02', endDate: '1999-01-02' }, turkey: { startDate: '1999-01-02' } },
+    ]
+  },
+  otherExposuresDetails: {
+    valid: [
+      { asbestos: fixtures.minimumYearDateRange },
+      { chemical: fixtures.minimumYearDateRange },
+      { mos: fixtures.minimumYearDateRange },
+      { mustardgas: fixtures.minimumYearDateRange },
+      { radiation: fixtures.minimumYearDateRange },
+      { water: fixtures.minimumYearDateRange },
+      { water: fixtures.minimumYearDateRange, mos: fixtures.minimumYearDateRange },
+      { water: fixtures.minimumYearDateRange, mos: fixtures.minimumYearDateRange, chemical: fixtures.minimumYearDateRange },
+    ],
+    invalid: [
+      { water: { startDate: 'XXXX-01-01', endDate: '79-01-02' } },
+      { mustardgas: { startDate: '79-01-02' } },
+      { asbestos: { startDate: 'XXXX-01-02', endDate: '1999-01-02' } },
+      { asbestos: { startDate: '1999-01-02', endDate: '79-01-02' }, radiation: { endDate: '1999-01-02' } },
+      { asbestos: { startDate: 'XXXX-01-02', endDate: '1999-01-02' }, radiation: { startDate: '1999-01-02' } },
+    ]
+  },
   alternateNames: {
     valid: [
       [{ first: 'john', last: 'doe' }],
@@ -582,6 +678,7 @@ describe('21-526-ALLCLAIMS schema', () => {
   testValidAndInvalidDefinitions('vaTreatmentCenterAddress');
   testValidAndInvalidDefinitions('dateRange');
   testValidAndInvalidDefinitions('dateRangeAllRequired');
+  testValidAndInvalidDefinitions('minimumYearDateRange');
   testValidAndInvalidDefinitions('ratedDisabilities');
   testValidAndInvalidDefinitions('newDisabilities');
   testValidAndInvalidDefinitions('unitAssigned', data.string(100));
@@ -613,6 +710,12 @@ describe('21-526-ALLCLAIMS schema', () => {
   testValidAndInvalid('serviceInformation.servicePeriods', data.servicePeriods);
   testValidAndInvalid('serviceInformation.separationLocation', data.separationLocation);
   testValidAndInvalid('serviceInformation.reservesNationalGuardService', data.reservesNationalGuardService);
+  testValidAndInvalid('toxicExposure.gulfWar1990Details', data.gulfWar1990Details);
+  testValidAndInvalid('toxicExposure.gulfWar2001Details', data.gulfWar2001Details);
+  testValidAndInvalid('toxicExposure.herbicideDetails', data.herbicideDetails);
+  testValidAndInvalid('toxicExposure.otherExposuresDetails', data.otherExposuresDetails);
+  testValidAndInvalid('toxicExposure.otherHerbicideLocations', testData.minimumYearDateRange.data);
+  testValidAndInvalid('toxicExposure.specifyOtherExposures', testData.minimumYearDateRange.data);
   testValidAndInvalid('confinements');
   testValidAndInvalid('militaryRetiredPayBranch', data.branch);
 
diff --git a/test/support/fixtures.js b/test/support/fixtures.js
index e71ae695e..867a588b2 100644
--- a/test/support/fixtures.js
+++ b/test/support/fixtures.js
@@ -9,6 +9,10 @@ export default {
     from: '2000-01-01',
     to: '2000-01-02'
   },
+  minimumYearDateRange: {
+    startDate: '2000-01-01',
+    endDate: '2000-01-02'
+  },
   address: {
     street: '123 a rd',
     city: 'abc',
diff --git a/test/support/test-data.js b/test/support/test-data.js
index f048b350c..989f685a8 100644
--- a/test/support/test-data.js
+++ b/test/support/test-data.js
@@ -379,6 +379,16 @@ export default {
       ],
     },
   },
+  minimumYearDateRange: {
+    data: {
+      valid: [fixtures.minimumYearDateRange],
+      invalid: [
+        {
+          startDate: 'XXXX-01-02',
+        },
+      ],
+    },
+  },
   postHighSchoolTrainings: {
     data: {
       valid: [