Index: HDDefs.h
===================================================================
diff -u -r552775ad57e17ded2bdd76b3f17cade65c912918 -rfba769e49c17346def92ca0e2bb2a8a488c8d1c8
--- HDDefs.h	(.../HDDefs.h)	(revision 552775ad57e17ded2bdd76b3f17cade65c912918)
+++ HDDefs.h	(.../HDDefs.h)	(revision fba769e49c17346def92ca0e2bb2a8a488c8d1c8)
@@ -399,12 +399,12 @@
 /// Blood leak zeroing states
 enum Blood_Leak_Zeroing_States
 {
-    BLD_ZEROING_IDLE = 0,                               ///< Blood leak zeroing idle.
-    BLD_ZEROING_FLUSH,                                  ///< Blood leak zeroing flush.
-    BLD_ZEROING_ZERO,                                   ///< Blood leak zeroing zero.
-    BLD_ZEROING_VERIFY_ZEROING,                         ///< Blood leak zeroing verify zeroing.
-    BLD_ZEROING_COMPLETE,                               ///< Blood leak zeroing complete.
-    NUM_OF_BLD_ZEROING                                  ///< Number of blood leak zeroing state.
+    BLD_ZEROING_IDLE_STATE = 0,                         ///< Blood leak zeroing idle state.
+    BLD_ZEROING_FLUSH_STATE,                            ///< Blood leak zeroing flush state.
+    BLD_ZEROING_ZERO_STATE,                             ///< Blood leak zeroing zero state.
+    BLD_ZEROING_VERIFY_ZEROING_STATE,                   ///< Blood leak zeroing verify zeroing state.
+    BLD_ZEROING_COMPLETE_STATE,                         ///< Blood leak zeroing complete state.
+    NUM_OF_BLD_ZEROING_STATES                           ///< Number of blood leak zeroing states.
 };
 typedef enum Blood_Leak_Zeroing_States BLOOD_LEAK_ZEROING_STATE_T;
 
@@ -777,7 +777,8 @@
     HD_EVENT_DRY_SELF_TEST_PRESSURE_DECAY_WAIT_PERIOD,                  ///< HD dry self test pressure decay waiting period.
     HD_EVENT_INSTIT_RECORD_UPDATE,                                      ///< HD new institutional record has been updated.
     HD_EVENT_PARTIAL_OCCLUSION_BASELINE,                                ///< HD event partial occlusion baseline event
-    HD_EVENT_BLOOD_LEAK_ZEROING_REQUEST,                                ///< HD event blood leak zeroing request
+    HD_EVENT_BLOOD_LEAK_ZEROING_REQUEST,                                ///< HD event blood leak zeroing request.
+    HD_EVENT_BLOOD_LEAK_DRIFT_IN_RANGE,                                 ///< HD event blood leak zeroing drift in range.
     NUM_OF_EVENT_IDS                                                    ///< Total number of HD events
 };
 typedef enum HD_Event_List HD_EVENT_ID_T;                               ///< Type for HD event list enumeration