diff --git a/app/controllers/green_lanes/category_assessments_controller.rb b/app/controllers/green_lanes/category_assessments_controller.rb
index 091bf871..0cae517f 100644
--- a/app/controllers/green_lanes/category_assessments_controller.rb
+++ b/app/controllers/green_lanes/category_assessments_controller.rb
@@ -5,7 +5,7 @@ class CategoryAssessmentsController < AuthenticatedController
     before_action :disable_service_switching!
     before_action :check_service
     def index
-      @category_assessments = GreenLanes::CategoryAssessment.all(page: current_page).fetch
+      @category_assessments = GreenLanes::CategoryAssessment.all(query: { exemption_code: params[:exemption_code], page: current_page}).fetch
     end
 
     def new
diff --git a/app/views/green_lanes/category_assessments/index.html.erb b/app/views/green_lanes/category_assessments/index.html.erb
index 24ea9cbf..931671df 100644
--- a/app/views/green_lanes/category_assessments/index.html.erb
+++ b/app/views/green_lanes/category_assessments/index.html.erb
@@ -4,6 +4,22 @@
 
 <%= link_to 'Add a Category Assessment', new_green_lanes_category_assessment_path, class: 'govuk-button' %>
 
+<%= form_with url: green_lanes_category_assessments_path, method: :get, class: "govuk-form-group" do |form| %>
+  <fieldset class="govuk-fieldset">
+    <legend class="govuk-fieldset__legend govuk-fieldset__legend--m">
+      Search Category Assessments
+    </legend>
+    <div class="govuk-form-group">
+      <%= form.label :exemption_code, "Green Lanes Exemption Code", class: "govuk-label" %>
+      <%= form.text_field :exemption_code, class: "govuk-input govuk-!-width-one-third", id: "search-term", width: 'one-third'%>
+    </div>
+
+    <div class="govuk-form-group">
+      <%= form.submit "Search", class: "govuk-button" %>
+    </div>
+  </fieldset>
+<% end %>
+
 <% if @category_assessments.any? %>
   <table>
     <thead>
diff --git a/spec/requests/green_lanes/category_assessments_controller_spec.rb b/spec/requests/green_lanes/category_assessments_controller_spec.rb
index 3e1399c9..74dd878c 100644
--- a/spec/requests/green_lanes/category_assessments_controller_spec.rb
+++ b/spec/requests/green_lanes/category_assessments_controller_spec.rb
@@ -14,7 +14,7 @@
 
   describe 'GET #index' do
     before do
-      stub_api_request('/admin/green_lanes/category_assessments?page=1', backend: 'xi').and_return \
+      stub_api_request('/admin/green_lanes/category_assessments?query[exemption_code]&query[page]=1', backend: 'xi').and_return \
         jsonapi_response :category_assessments, attributes_for_list(:category_assessment, 3, :with_theme)
     end