diff --git a/StandardizedClinicalDataTables/DEVICE_EXPOSURE.md b/StandardizedClinicalDataTables/DEVICE_EXPOSURE.md
index 5dff22f..8e56bf6 100644
--- a/StandardizedClinicalDataTables/DEVICE_EXPOSURE.md
+++ b/StandardizedClinicalDataTables/DEVICE_EXPOSURE.md
@@ -23,7 +23,7 @@ Field|Required|Type|Description
   * The distinction between Devices or supplies and procedures are sometimes blurry, but the former are physical objects while the latter are actions, often to apply a Device or supply. 
   * For medical devices that are regulated by the FDA, if a Unique Device Identification (UDI) is provided if available in the data source, and is recorded in the unique_device_id field.
   * Valid Device Concepts belong to the "Device" domain.  The Concepts of this domain are derived from the DI portion of a UDI or based on other source vocabularies, like HCPCS.
-  * A Device Type is assigned to each Device Exposure to track from what source the information was drawn or inferred. The valid domain_id for these Concepts is "Device Type".
+  * A Device Type is assigned to each Device Exposure to track from what source the information was drawn or inferred. The valid vocabulary_id or concept_class_id for these Concepts is "Device Type".
   * The Visit during which the Device was first used is recorded through a reference to the VISIT_OCCURRENCE table. This information is not always available.
   * The Visit Detail during which the Device was first used is recorded through a reference to the VISIT_DETAIL table. This information is not always available.
   * The Provider exposing the patient to the Device is recorded through a reference to the PROVIDER table. This information is not always available.