diff --git a/features/fedramp_extensions.feature b/features/fedramp_extensions.feature
index 45e828a81..6e7048f47 100644
--- a/features/fedramp_extensions.feature
+++ b/features/fedramp_extensions.feature
@@ -121,6 +121,7 @@ Examples:
   | interconnection-security |
   | inventory-item-allows-authenticated-scan |
   | inventory-item-and-component-has-public |
+  | inventory-item-has-is-scanned |
   | inventory-item-has-valid-mac-address |
   | inventory-item-has-vendor-name |
   | inventory-item-or-component-has-asset-id |
@@ -376,6 +377,8 @@ Examples:
   | inventory-item-allows-authenticated-scan-PASS.yaml |
   | inventory-item-and-component-has-public-FAIL.yaml |
   | inventory-item-and-component-has-public-PASS.yaml |
+  | inventory-item-has-is-scanned-FAIL.yaml |
+  | inventory-item-has-is-scanned-PASS.yaml |
   | inventory-item-has-valid-mac-address-FAIL.yaml |
   | inventory-item-has-valid-mac-address-PASS.yaml |
   | inventory-item-has-vendor-name-FAIL.yaml |
diff --git a/src/content/rev5/examples/ssp/xml/fedramp-ssp-example.oscal.xml b/src/content/rev5/examples/ssp/xml/fedramp-ssp-example.oscal.xml
index e70c03786..b5b55196f 100644
--- a/src/content/rev5/examples/ssp/xml/fedramp-ssp-example.oscal.xml
+++ b/src/content/rev5/examples/ssp/xml/fedramp-ssp-example.oscal.xml
@@ -2370,6 +2370,7 @@ approved.</p>
       <prop name="fqdn" value="dns.name"/>
       <prop name="uri" value="uniform.resource.locator"/>
       <prop name="netbios-name" value="netbios-name"/>
+      <prop name="is-scanned" value="yes"/>
       <!-- patch-level applies to component, not inventory-item -->
       <!-- <prop name="patch-level" value="Patch-Level"/> -->
       <prop name="baseline-configuration-name" value="Baseline Configuration Name"/>
diff --git a/src/validations/constraints/content/ssp-inventory-item-has-is-scanned-INVALID.xml b/src/validations/constraints/content/ssp-inventory-item-has-is-scanned-INVALID.xml
new file mode 100644
index 000000000..3d60beb6b
--- /dev/null
+++ b/src/validations/constraints/content/ssp-inventory-item-has-is-scanned-INVALID.xml
@@ -0,0 +1,7 @@
+<system-security-plan xmlns="http://csrc.nist.gov/ns/oscal/1.0" uuid="11111111-2222-4000-8000-000000000000">
+  <system-implementation>
+    <inventory-item uuid="11111111-2222-4000-8000-011000000001">
+    <!-- <prop name="is-scanned" value="yes"/> Missing "is-scanned" prop -->
+    </inventory-item>
+  </system-implementation>
+</system-security-plan>
\ No newline at end of file
diff --git a/src/validations/constraints/fedramp-external-constraints.xml b/src/validations/constraints/fedramp-external-constraints.xml
index f24d6cc41..e6cb223fd 100644
--- a/src/validations/constraints/fedramp-external-constraints.xml
+++ b/src/validations/constraints/fedramp-external-constraints.xml
@@ -663,6 +663,11 @@
         <metapath target="/system-security-plan/system-implementation/inventory-item"/>
         <constraints>
             <let var ="component-uuid" expression="implemented-component/@component-uuid"/>
+            <expect id="inventory-item-has-is-scanned" target="." test="count(prop[@name='is-scanned']) = 1 or count(../component[@uuid=$component-uuid]/prop[@name='is-scanned']) = 1" level="ERROR">
+                <formal-name>Inventory Item Has Is-Scanned</formal-name>
+                <prop namespace="https://docs.oasis-open.org/sarif/sarif/v2.1.0" name="help-url" value="https://automate.fedramp.gov/documentation/ssp/5-attachments/#system-inventory-approach"/>
+                <message>In a FedRAMP SSP, each inventory item MUST state if it is included in scans either in the inventory item itself or within the linked component.</message>
+            </expect>
              <expect id="inventory-item-has-valid-mac-address" target=".[prop[@name='mac-address']]/prop[@name='mac-address']" test="matches(@value, '^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})|([0-9a-fA-F]{4}\\.[0-9a-fA-F]{4}\\.[0-9a-fA-F]{4})$')" level="ERROR">
                 <formal-name>Inventory Item Has Valid Mac Address</formal-name>
                 <prop namespace="https://docs.oasis-open.org/sarif/sarif/v2.1.0" name="help-url" value="https://automate.fedramp.gov/documentation/ssp/5-attachments/#system-inventory-approach"/>
diff --git a/src/validations/constraints/unit-tests/inventory-item-has-is-scanned-FAIL.yaml b/src/validations/constraints/unit-tests/inventory-item-has-is-scanned-FAIL.yaml
new file mode 100644
index 000000000..a5afa002c
--- /dev/null
+++ b/src/validations/constraints/unit-tests/inventory-item-has-is-scanned-FAIL.yaml
@@ -0,0 +1,9 @@
+test-case:
+  name: Negative Test for inventory-item-has-is-scanned
+  description: >-
+    This test case validates the behavior of constraint
+    inventory-item-has-is-scanned
+  content: ../content/ssp-inventory-item-has-is-scanned-INVALID.xml
+  expectations:
+    - constraint-id: inventory-item-has-is-scanned
+      result: fail
diff --git a/src/validations/constraints/unit-tests/inventory-item-has-is-scanned-PASS.yaml b/src/validations/constraints/unit-tests/inventory-item-has-is-scanned-PASS.yaml
new file mode 100644
index 000000000..23e780275
--- /dev/null
+++ b/src/validations/constraints/unit-tests/inventory-item-has-is-scanned-PASS.yaml
@@ -0,0 +1,9 @@
+test-case:
+  name: Positive Test for inventory-item-has-is-scanned
+  description: >-
+    This test case validates the behavior of constraint
+    inventory-item-has-is-scanned
+  content: ../../../content/rev5/examples/ssp/xml/fedramp-ssp-example.oscal.xml
+  expectations:
+    - constraint-id: inventory-item-has-is-scanned
+      result: pass