diff --git a/schema/gks-core/def/MappableConcept.rst b/schema/gks-core/def/MappableConcept.rst
index 47f4de6..92ef5da 100644
--- a/schema/gks-core/def/MappableConcept.rst
+++ b/schema/gks-core/def/MappableConcept.rst
@@ -29,6 +29,10 @@ Some MappableConcept attributes are inherited from :ref:`Element`.
       - :ref:`Extension`
       - 0..m
       - A list of extensions to the Entity, that allow for capture of information not directly supported by elements defined in the model.
+   *  - conceptType
+      - string
+      - 0..1
+      - A term indicating the type of concept being represented by the MappableConcept.
    *  - label
       - string
       - 1..1
diff --git a/schema/gks-core/gks-core-source.yaml b/schema/gks-core/gks-core-source.yaml
index a875e06..f7294a8 100644
--- a/schema/gks-core/gks-core-source.yaml
+++ b/schema/gks-core/gks-core-source.yaml
@@ -1000,6 +1000,14 @@ $defs:
     description: >-
       A concept label that may be mapped to one or more :ref:`Codings <Coding>`.
     properties:
+      conceptType:
+        type: string
+        description: >-
+          A term indicating the type of concept being represented by the MappableConcept.
+        $comment: >-
+          This attribute can be used to indicate the type of concept being represented by the MappableConcept.
+          For example, in a variant pathogenicity assessment, the conceptType could be 'Pathogenicity Strength',
+          'Disease', 'Phenotype', 'Drug', 'Tumor Type', 'Evidence Direction', 'Evidence Strength', etc.
       label:
         type: string
         description: A primary name for the concept.
diff --git a/schema/gks-core/json/MappableConcept b/schema/gks-core/json/MappableConcept
index ca4f596..756de9c 100644
--- a/schema/gks-core/json/MappableConcept
+++ b/schema/gks-core/json/MappableConcept
@@ -19,6 +19,11 @@
          "description": "A list of extensions to the Entity, that allow for capture of information not directly supported by elements defined in the model.",
          "$comment": "Extension objects have a key-value data structure that allows definition of custom fields in the data itself. Extensions are not expected to be natively understood, but may be used for pre-negotiated exchange of message attributes between systems."
       },
+      "conceptType": {
+         "type": "string",
+         "description": "A term indicating the type of concept being represented by the MappableConcept.",
+         "$comment": "This attribute can be used to indicate the type of concept being represented by the MappableConcept. For example, in a variant pathogenicity assessment, the conceptType could be 'Pathogenicity Strength', 'Disease', 'Phenotype', 'Drug', 'Tumor Type', 'Evidence Direction', 'Evidence Strength', etc."
+      },
       "label": {
          "type": "string",
          "description": "A primary name for the concept."