diff --git a/extensions/typescript-language-features/src/languageFeatures/completions.ts b/extensions/typescript-language-features/src/languageFeatures/completions.ts
index b9030df380b..df86687559f 100644
--- a/extensions/typescript-language-features/src/languageFeatures/completions.ts
+++ b/extensions/typescript-language-features/src/languageFeatures/completions.ts
@@ -818,6 +818,7 @@ class TypeScriptCompletionItemProvider implements vscode.CompletionItemProvider<
 				"duration" : { "classification": "SystemMetaData", "purpose": "FeatureInsight" },
 				"type" : { "classification": "SystemMetaData", "purpose": "FeatureInsight" },
 				"count" : { "classification": "SystemMetaData", "purpose": "FeatureInsight" },
+				"flags": { "classification": "SystemMetaData", "purpose": "FeatureInsight" },
 				"updateGraphDurationMs" : { "classification": "SystemMetaData", "purpose": "FeatureInsight" },
 				"createAutoImportProviderProgramDurationMs" : { "classification": "SystemMetaData", "purpose": "FeatureInsight" },
 				"includesPackageJsonImport" : { "classification": "SystemMetaData", "purpose": "FeatureInsight" },
@@ -830,6 +831,8 @@ class TypeScriptCompletionItemProvider implements vscode.CompletionItemProvider<
 		this.telemetryReporter.logTelemetry('completions.execute', {
 			duration: String(duration),
 			type: response?.type ?? 'unknown',
+			// @ts-expect-error until 4.7
+			flags: response?.type === 'response' && typeof response.body?.flags === 'number' ? String(response.body.flags) : undefined,
 			count: String(response?.type === 'response' && response.body ? response.body.entries.length : 0),
 			updateGraphDurationMs: response?.type === 'response' && typeof response.performanceData?.updateGraphDurationMs === 'number'
 				? String(response.performanceData.updateGraphDurationMs)