diff --git a/extensions/typescript-language-features/src/features/referencesCodeLens.ts b/extensions/typescript-language-features/src/features/referencesCodeLens.ts
index 5e92ce06e01..7aa228f8f8e 100644
--- a/extensions/typescript-language-features/src/features/referencesCodeLens.ts
+++ b/extensions/typescript-language-features/src/features/referencesCodeLens.ts
@@ -99,6 +99,14 @@ export class TypeScriptReferencesCodeLensProvider extends TypeScriptBaseCodeLens
 			case PConst.Kind.memberSetAccessor:
 			case PConst.Kind.constructorImplementation:
 			case PConst.Kind.memberVariable:
+				// Don't show if child and parent have same start
+				// For https://github.com/microsoft/vscode/issues/90396
+				if (parent &&
+					typeConverters.Position.fromLocation(parent.spans[0].start).isEqual(typeConverters.Position.fromLocation(item.spans[0].start))
+				) {
+					return null;
+				}
+
 				// Only show if parent is a class type object (not a literal)
 				switch (parent?.kind) {
 					case PConst.Kind.class:
diff --git a/extensions/typescript-language-features/src/test/referencesCodeLens.test.ts b/extensions/typescript-language-features/src/test/referencesCodeLens.test.ts
index 7ca35ed89cc..89689d57ae6 100644
--- a/extensions/typescript-language-features/src/test/referencesCodeLens.test.ts
+++ b/extensions/typescript-language-features/src/test/referencesCodeLens.test.ts
@@ -91,6 +91,19 @@ suite('TypeScript References', () => {
 		const codeLenses = await getCodeLenses(testDocumentUri);
 		assert.strictEqual(codeLenses?.length, 0);
 	});
+
+	test('Should not show duplicate references on ES5 class (https://github.com/microsoft/vscode/issues/90396)', async () => {
+		const testDocumentUri = vscode.Uri.parse('untitled:test3.js');
+		await createTestEditor(testDocumentUri,
+			`function A() {`,
+			`    console.log("hi");`,
+			`}`,
+			`A.x = {};`,
+		);
+
+		const codeLenses = await getCodeLenses(testDocumentUri);
+		assert.strictEqual(codeLenses?.length, 1);
+	});
 });
 
 function getCodeLenses(document: vscode.Uri): Thenable<readonly vscode.CodeLens[] | undefined> {