diff --git a/buildscripts/errorcodes.py b/buildscripts/errorcodes.py
index 0aabaac16af..79e883ebad5 100755
--- a/buildscripts/errorcodes.py
+++ b/buildscripts/errorcodes.py
@@ -43,7 +43,7 @@ _CODE_PATTERNS = [
         r"(?:StatusOK)?"
         r"(?:WithContext)?"
         r"\s*\(",
-        r"MONGO_UNREACHABLE_TASSERT\(",
+        r"MONGO_UN(?:REACHABLE|IMPLEMENTED)_TASSERT\(",
         # DBException and AssertionException constructors
         r"(?:DB|Assertion)Exception\s*[({]",
         # Calls to all LOGV2* variants
diff --git a/buildscripts/tests/data/errorcodes/regex_matching/regex_matching.cpp b/buildscripts/tests/data/errorcodes/regex_matching/regex_matching.cpp
index 24b0b42fed3..71add89f2a9 100644
--- a/buildscripts/tests/data/errorcodes/regex_matching/regex_matching.cpp
+++ b/buildscripts/tests/data/errorcodes/regex_matching/regex_matching.cpp
@@ -33,3 +33,4 @@ iasserted(28, "words");
 iassertNoTrace(29, "words");
 iassertedNoTrace(30, "words");
 MONGO_UNREACHABLE_TASSERT(31);
+MONGO_UNIMPLEMENTED_TASSERT(32);
diff --git a/buildscripts/tests/test_errorcodes.py b/buildscripts/tests/test_errorcodes.py
index 5f640b73d98..22aefd79382 100644
--- a/buildscripts/tests/test_errorcodes.py
+++ b/buildscripts/tests/test_errorcodes.py
@@ -26,7 +26,7 @@ class TestErrorcodes(unittest.TestCase):
             captured_error_codes.append(code)
 
         errorcodes.parse_source_files(accumulate_files, TESTDATA_DIR + 'regex_matching/')
-        self.assertEqual(31, len(captured_error_codes))
+        self.assertEqual(32, len(captured_error_codes))
 
     def test_dup_checking(self):
         """Test dup checking."""
diff --git a/src/mongo/db/catalog/virtual_collection_impl.h b/src/mongo/db/catalog/virtual_collection_impl.h
index 57097d8db4c..1e2485bb5ad 100644
--- a/src/mongo/db/catalog/virtual_collection_impl.h
+++ b/src/mongo/db/catalog/virtual_collection_impl.h
@@ -558,7 +558,7 @@ public:
 
 private:
     void unimplementedTasserted() const {
-        MONGO_UNIMPLEMENTED_TASSERT(6968504);
+        MONGO_UNIMPLEMENTED_TASSERT(6968506);
     }
 
     struct SharedState {