diff --git a/microsetta_private_api/admin/admin_impl.py b/microsetta_private_api/admin/admin_impl.py
index 44e25c08b..ff62c9ada 100644
--- a/microsetta_private_api/admin/admin_impl.py
+++ b/microsetta_private_api/admin/admin_impl.py
@@ -917,3 +917,32 @@ def get_vioscreen_sample_to_user(token_info):
         st_repo = SurveyTemplateRepo(t)
         data = st_repo.get_vioscreen_sample_to_user()
     return jsonify(data), 200
+
+
+def map_to_rack(token_info, sample_barcode, body):
+    validate_admin_access(token_info)
+
+    with Transaction() as t:
+        admin_repo = AdminRepo(t)
+        scan_id = admin_repo.map_to_rack(sample_barcode, body)
+        t.commit()
+
+    response = jsonify({"scan_id": scan_id})
+    response.status_code = 201
+    return response
+
+
+def get_samples_from_rack(token_info, rack_id, bulk_scan_id):
+    validate_admin_access(token_info)
+
+    with Transaction() as t:
+        admin_repo = AdminRepo(t)
+        row = admin_repo.get_rack_samples(rack_id, bulk_scan_id)
+        if row is None:
+            response = jsonify({"message": "sample does not exist!"})
+            response.status_code = 404
+            return response
+        else:
+            response = jsonify({"result": row})
+            response.status_code = 201
+            return response
diff --git a/microsetta_private_api/admin/tests/test_admin_api.py b/microsetta_private_api/admin/tests/test_admin_api.py
index 8c9349399..11955bc29 100644
--- a/microsetta_private_api/admin/tests/test_admin_api.py
+++ b/microsetta_private_api/admin/tests/test_admin_api.py
@@ -1,6 +1,7 @@
 import pytest
 from unittest import TestCase
 from unittest.mock import patch
+import uuid
 from flask import Response
 import json
 import microsetta_private_api.server
@@ -1270,6 +1271,24 @@ def mock_func(*args, **kwargs):
                 headers=MOCK_HEADERS)
             self.assertEqual(204, response.status_code)
 
+    def test_sample_map_to_rack(self):
+        barcode = "000001024"
+        scan_info = {
+            'rack_id': '005',
+            'location_row': 'B',
+            'location_col': '01',
+            'bulk_scan_id': str(uuid.uuid4())
+        }
+
+        response = self.client.post(
+            '/api/admin/rack/{0}/add'.format(barcode),
+            content_type="application/json",
+            data=json.dumps(scan_info),
+            headers=MOCK_HEADERS
+        )
+
+        self.assertEquals(201, response.status_code)
+
     def test_generate_ffq_codes(self):
         input_json = json.dumps({"code_quantity": 2})
 
diff --git a/microsetta_private_api/admin/tests/test_admin_repo.py b/microsetta_private_api/admin/tests/test_admin_repo.py
index f6a6e645f..435bd2350 100644
--- a/microsetta_private_api/admin/tests/test_admin_repo.py
+++ b/microsetta_private_api/admin/tests/test_admin_repo.py
@@ -4,6 +4,7 @@
 import psycopg2
 import psycopg2.extras
 from dateutil.relativedelta import relativedelta
+import uuid
 
 import microsetta_private_api.model.project as p
 
@@ -1324,6 +1325,43 @@ def test_set_kit_uuids_for_dak_order(self):
                 for expected_record in expected_records:
                     self.assertIn(expected_record, curr_records)
 
+    def test_map_to_rack_fail(self):
+        scan_info = {
+            'rack_id': '001',
+            'location_row': 'A',
+            'location_col': '02'
+        }
+
+        with Transaction() as t:
+            barcode = '00000000'
+
+            admin_repo = AdminRepo(t)
+            with self.assertRaises(NotFound):
+                admin_repo.map_to_rack(barcode, scan_info)
+
+    def test_map_to_rack_success(self):
+        bulk_scan_id = str(uuid.uuid4())
+        scan_info = {
+            'rack_id': '001',
+            'location_row': 'A',
+            'location_col': '02',
+            'bulk_scan_id': bulk_scan_id
+        }
+
+        id = ""
+        samples = None
+        with Transaction() as t:
+            barcode = '000001024'
+
+            admin_repo = AdminRepo(t)
+            id = admin_repo.map_to_rack(barcode, scan_info)
+
+            rack_id = '001'
+            samples = admin_repo.get_rack_samples(rack_id, bulk_scan_id)
+
+        self.assertTrue(len(id) > 0)
+        self.assertEquals(len(samples), 1)
+
     def test_create_ffq_code(self):
         with Transaction() as t:
             admin_repo = AdminRepo(t)
diff --git a/microsetta_private_api/api/microsetta_private_api.yaml b/microsetta_private_api/api/microsetta_private_api.yaml
index d773cf37b..7874735f4 100644
--- a/microsetta_private_api/api/microsetta_private_api.yaml
+++ b/microsetta_private_api/api/microsetta_private_api.yaml
@@ -2394,6 +2394,63 @@ paths:
               schema:
                 type: object
 
+  '/admin/rack/{sample_barcode}/add':
+    post:
+      # Note: We might want to be able to differentiate system administrator operations
+      # from technician operations in the future by user accounts and the routes they post to
+      operationId: microsetta_private_api.admin.admin_impl.map_to_rack
+      tags:
+        - Admin
+      summary: Add sample to rack for a barcode
+      description: Add sample to rack for a barcode
+      parameters:
+        - $ref: '#/components/parameters/sample_barcode'
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: object
+              properties:
+                rack_id:
+                  type: string
+                location_col:
+                  type: string
+                location_row:
+                  type: string
+                bulk_scan_id:
+                  type: string
+      responses:
+        '201':
+          description: Successfully mapped new barcode scan to rack
+          content:
+            application/json:
+              schema:
+                type: object
+    
+  '/admin/rack/{bulk_scan_id}/sample/{rack_id}':
+    get:
+      operationId: microsetta_private_api.admin.admin_impl.get_samples_from_rack
+      tags:
+        - Admin
+      summary: Get sample details from rack by rack id
+      description: Get sample details from rack by rack id
+      parameters:
+        - $ref: '#/components/parameters/rack_id'
+        - $ref: '#/components/parameters/bulk_scan_id'
+      responses:
+        '201':
+          description: Successfully fetched sample details from rack by rack id
+          content:
+            application/json:
+              schema:
+                type: object
+        '404':
+          description: Sample does not exist
+          content:
+            application/json:
+              schema:
+                type: object
+
   '/admin/metadata/samples/{sample_barcode}/surveys/{survey_template_id}':
     get:
       operationId: microsetta_private_api.admin.admin_impl.sample_pulldown_single_survey
@@ -2977,6 +3034,18 @@ components:
       description: Type of consent
       schema:
         $ref: '#/components/schemas/consent_type'
+    rack_id:
+      name: rack_id
+      in: path
+      description: Rack id for a particular sample placed in rack
+      schema:
+        $ref: '#/components/schemas/rack_id'
+    bulk_scan_id:
+      name: bulk_scan_id
+      in: path
+      description: Unique identifier for each bulk scan cycle
+      schema:
+        $ref: '#/components/schemas/bulk_scan_id'
 
     # query parameters
     activation_code:
@@ -3292,6 +3361,21 @@ components:
       items:
         type: string
         example: "https://wherever.com"
+    rack_id:
+      type: string
+      example: "0000"
+    location_col:
+      type: string
+      example: "1"
+    location_row:
+      type: string
+      example: "A"
+    rack_id:
+      type: string
+      example: "aaaaaaaa-bbbb-cccc-dddd-eeeeffffffff"
+    bulk_scan_id:
+      type: string
+      example: "aaaaaaaa-bbbb-cccc-dddd-eeeeffffffff"
 
     sample:
       type: object
@@ -3319,6 +3403,18 @@ components:
         accession_urls:
           $ref: '#/components/schemas/accession_urls'
 
+    scanned_sample:
+      type: object
+      properties:
+        rack_id:
+          $ref: '#/components/schemas/rack_id'
+        location_col:
+          $ref: '#/components/schemas/location_col'
+        location_row:
+          $ref: '#/components/schemas/location_row'
+        sample_datetime:
+          $ref: '#/components/schemas/sample_datetime'
+
     preparation:
       type: object
       properties:
diff --git a/microsetta_private_api/db/patches/0116.sql b/microsetta_private_api/db/patches/0116.sql
new file mode 100644
index 000000000..65d9467c3
--- /dev/null
+++ b/microsetta_private_api/db/patches/0116.sql
@@ -0,0 +1,12 @@
+CREATE TABLE barcodes.rack_samples (
+    location_id uuid NOT NULL DEFAULT uuid_generate_v4(),
+    rack_id varchar NOT NULL,
+    sample_id varchar NOT NULL,
+    location_row varchar NOT NULL,
+    location_col varchar NOT NULL, 
+    date_time TIMESTAMP WITH TIME ZONE NOT NULL,
+    PRIMARY KEY (location_id)
+);
+
+ALTER TABLE barcodes.rack_samples
+ADD COLUMN scan_id varchar NOT NULL;
\ No newline at end of file
diff --git a/microsetta_private_api/repo/admin_repo.py b/microsetta_private_api/repo/admin_repo.py
index e5cb13835..572c5c7c1 100644
--- a/microsetta_private_api/repo/admin_repo.py
+++ b/microsetta_private_api/repo/admin_repo.py
@@ -1136,6 +1136,70 @@ def search_barcode(self, sql_cond, cond_params):
             )
             return [r[0] for r in cur.fetchall()]
 
+    def map_to_rack(self, sample_barcode, scan_info):
+        with self._transaction.cursor() as cur:
+
+            # not actually using the result, just checking there IS one
+            # to ensure this is a valid barcode
+            cur.execute(
+                "SELECT barcode FROM barcodes.barcode WHERE barcode=%s",
+                (sample_barcode,)
+            )
+
+            if cur.rowcount == 0:
+                raise NotFound("No such barcode: %s" % sample_barcode)
+            elif cur.rowcount > 1:
+                # Note: This "can't" happen.
+                raise RepoException("ERROR: Multiple barcode entries would be "
+                                    "affected by scan; failing out")
+
+            # put a new row in the barcodes.barcode_scans table
+            new_uuid = str(uuid.uuid4())
+            scan_args = (
+                new_uuid,
+                scan_info['rack_id'],
+                sample_barcode,
+                scan_info['location_row'],
+                scan_info['location_col'],
+                datetime.datetime.now(),
+                scan_info['bulk_scan_id']
+            )
+
+            cur.execute(
+                "INSERT INTO barcodes.rack_samples "
+                "(location_id, rack_id, sample_id, "
+                "location_row, location_col, date_time, scan_id) "
+                "VALUES (%s, %s, %s, %s, %s, %s, %s)",
+                scan_args
+            )
+
+            return new_uuid
+
+    def get_rack_samples(self, rack_id, bulk_scan_id):
+        with self._transaction.dict_cursor() as cur:
+
+            cur.execute(
+                "SELECT DISTINCT ON (sample_id) sample_id, location_row, "
+                "location_col FROM barcodes.rack_samples WHERE rack_id=%s "
+                "AND scan_id=%s "
+                "ORDER BY sample_id, date_time DESC",
+                (rack_id, bulk_scan_id, )
+            )
+
+            sample_rows = cur.fetchall()
+
+            if len(sample_rows) == 0:
+                raise NotFound("No barcode with rack id: %s" % rack_id)
+
+            result = []
+            for row in sample_rows:
+                data_to_return = {}
+                data_to_return["location_row"] = row["location_row"]
+                data_to_return["location_col"] = row["location_col"]
+                data_to_return["barcode"] = row["sample_id"]
+                result.append(data_to_return)
+            return result
+
     def get_survey_metadata(self, sample_barcode, survey_template_id=None):
         '''
         Return all surveys associated with a given barcode.