diff --git a/core/api/current.txt b/core/api/current.txt
index 9ccc35290b1a8..a496828b76bb4 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -42640,6 +42640,7 @@ package android.telephony.ims {
     field public static final int CODE_MEDIA_NO_DATA = 402; // 0x192
     field public static final int CODE_MEDIA_UNSPECIFIED = 404; // 0x194
     field public static final int CODE_MULTIENDPOINT_NOT_SUPPORTED = 902; // 0x386
+    field public static final int CODE_NETWORK_CONGESTION = 1624; // 0x658
     field public static final int CODE_NETWORK_DETACH = 1513; // 0x5e9
     field public static final int CODE_NETWORK_REJECT = 1504; // 0x5e0
     field public static final int CODE_NETWORK_RESP_TIMEOUT = 1503; // 0x5df
diff --git a/telephony/java/android/telephony/ims/ImsReasonInfo.java b/telephony/java/android/telephony/ims/ImsReasonInfo.java
index a5a8958ce908b..dda021e6172f7 100644
--- a/telephony/java/android/telephony/ims/ImsReasonInfo.java
+++ b/telephony/java/android/telephony/ims/ImsReasonInfo.java
@@ -893,7 +893,6 @@ public final class ImsReasonInfo implements Parcelable {
     /**
      * Call failed because of network congestion, resource is not available,
      * or no circuit or channel available, etc.
-     * @hide
      */
     public static final int CODE_NETWORK_CONGESTION = 1624;
 
@@ -1276,6 +1275,7 @@ public final class ImsReasonInfo implements Parcelable {
         sImsCodeMap.put(CODE_REJECT_VT_AVPF_NOT_ALLOWED, "CODE_REJECT_VT_AVPF_NOT_ALLOWED");
         sImsCodeMap.put(CODE_REJECT_ONGOING_ENCRYPTED_CALL, "CODE_REJECT_ONGOING_ENCRYPTED_CALL");
         sImsCodeMap.put(CODE_REJECT_ONGOING_CS_CALL, "CODE_REJECT_ONGOING_CS_CALL");
+        sImsCodeMap.put(CODE_NETWORK_CONGESTION, "CODE_NETWORK_CONGESTION");
         sImsCodeMap.put(CODE_RETRY_ON_IMS_WITHOUT_RTT, "CODE_RETRY_ON_IMS_WITHOUT_RTT");
         sImsCodeMap.put(CODE_OEM_CAUSE_1, "CODE_OEM_CAUSE_1");
         sImsCodeMap.put(CODE_OEM_CAUSE_2, "CODE_OEM_CAUSE_2");