diff --git a/Documentation/CommonDataModel_Wiki_Files/StandardizedClinicalDataTables/VISIT_DETAIL.md b/Documentation/CommonDataModel_Wiki_Files/StandardizedClinicalDataTables/VISIT_DETAIL.md
index b5abcdce..c8df9bf6 100644
--- a/Documentation/CommonDataModel_Wiki_Files/StandardizedClinicalDataTables/VISIT_DETAIL.md
+++ b/Documentation/CommonDataModel_Wiki_Files/StandardizedClinicalDataTables/VISIT_DETAIL.md
@@ -5,16 +5,16 @@ Field|Required|Type|Description
 :------------------------|:--------|:-----|:-------------------------------------------------
 |visit_detail_id			|Yes|integer|A unique identifier for each Person's visit or encounter at a healthcare provider.|
 |person_id					|Yes|integer|A foreign key identifier to the Person for whom the visit is recorded. The demographic details of that Person are stored in the PERSON table.|
-|visit_concept_id			|Yes|integer|A foreign key that refers to a visit Concept identifier in the Standardized Vocabularies.|
-|visit_start_date			|Yes|date|The start date of the visit.|
-|visit_start_datetime		|No|datetime|The date and time of the visit started.|
-|visit_end_date				|Yes|date|The end date of the visit. If this is a one-day visit the end date should match the start date.|
-|visit_end_datetime			|No|datetime|The date and time of the visit end.|
-|visit_type_concept_id		|Yes|Integer|A foreign key to the predefined Concept identifier in the Standardized Vocabularies reflecting the type of source data from which the visit record is derived.|
+|visit_detail_concept_id			|Yes|integer|A foreign key that refers to a visit Concept identifier in the Standardized Vocabularies.|
+|visit_detail_start_date			|Yes|date|The start date of the visit.|
+|visit_detail_start_datetime		|No|datetime|The date and time of the visit started.|
+|visit_detail_end_date				|Yes|date|The end date of the visit. If this is a one-day visit the end date should match the start date.|
+|visit_detail_end_datetime			|No|datetime|The date and time of the visit end.|
+|visit_detail_type_concept_id		|Yes|Integer|A foreign key to the predefined Concept identifier in the Standardized Vocabularies reflecting the type of source data from which the visit record is derived.|
 |provider_id				|No|integer|A foreign key to the provider in the provider table who was associated with the visit.|
 |care_site_id				|No|integer|A foreign key to the care site in the care site table that was visited.|
-|visit_source_value			|No|string(50)|The source code for the visit as it appears in the source data.|
-|visit_source_concept_id	|No|Integer|A foreign key to a Concept that refers to the code used in the source.|
+|visit_detail_source_value			|No|string(50)|The source code for the visit as it appears in the source data.|
+|visit_detail_source_concept_id	|No|Integer|A foreign key to a Concept that refers to the code used in the source.|
 |admitting_source_value		|	No|Varchar(50)|	The source code for the admitting source as it appears in the source data.|
 |admitting_source_concept_id	|No	|Integer	|A foreign key to the predefined concept in the Place of Service Vocabulary reflecting the admitting source for a visit.|
 |discharge_to_source_value	|	No|	Varchar(50)|	The source code for the discharge disposition as it appears in the source data.|
diff --git a/Documentation/CommonDataModel_Wiki_Files/_Footer.md b/Documentation/CommonDataModel_Wiki_Files/_Footer.md
index f85f272c..914df1d9 100644
--- a/Documentation/CommonDataModel_Wiki_Files/_Footer.md
+++ b/Documentation/CommonDataModel_Wiki_Files/_Footer.md
@@ -1 +1 @@
-***OMOP Common Data Model v5.3 Specifications 14June2018***
\ No newline at end of file
+***OMOP Common Data Model v5.3.1 Specifications 14June2018***
\ No newline at end of file
diff --git a/OMOP_CDM_v5_3_1.pdf b/OMOP_CDM_v5_3_1.pdf
index e65dca55..8802fcec 100644
Binary files a/OMOP_CDM_v5_3_1.pdf and b/OMOP_CDM_v5_3_1.pdf differ