diff --git a/icu4c/source/common/ucnv_cnv.h b/icu4c/source/common/ucnv_cnv.h
index 45100718768..2a97d0348c2 100644
--- a/icu4c/source/common/ucnv_cnv.h
+++ b/icu4c/source/common/ucnv_cnv.h
@@ -42,73 +42,6 @@ U_CDECL_BEGIN
  * U+ffff "illegal"
  */
 
-#define FromU_CALLBACK_MACRO(context, args, codeUnits, length, codePoint, reason, err) \
-                { \
-                  /*copies current values for the ErrorFunctor to update */ \
-                  /*Calls the ErrorFunctor */ \
-                  args->converter->fromUCharErrorBehaviour ( context, \
-                                                  args, \
-                                                  codeUnits, \
-                                                  length, \
-                                                  codePoint, \
-                                                  reason, \
-                                                  err); \
-                 myTargetIndex = args->target - (char*)myTarget; \
-                 mySourceIndex = args->source - mySource; \
-                }
-/*
-*/
-#define ToU_CALLBACK_MACRO(context, args, codePoints, length, reason, err) \
-                { \
-                  /*Calls the ErrorFunctor */ \
-                  args->converter->fromCharErrorBehaviour ( \
-                                                 context, \
-                                                 args, \
-                                                 codePoints, \
-                                                 length, \
-                                                 reason, \
-                                                 err); \
-                 myTargetIndex = args->target - myTarget; \
-                 mySourceIndex = args->source - (const char*)mySource; \
-                }
-/*
-*/
-#define FromU_CALLBACK_OFFSETS_LOGIC_MACRO(context, args, codeUnits, length, codePoint, reason, err) \
-                { \
-                 int32_t My_i = myTargetIndex; \
-                  /*copies current values for the ErrorFunctor to update */ \
-                  /*Calls the ErrorFunctor */ \
-                  args->converter->fromUCharErrorBehaviour ( \
-                                                 context, \
-                                                 args, \
-                                                 codeUnits, \
-                                                 length, \
-                                                 codePoint, \
-                                                 reason, \
-                                                 err); \
-                  /*Update the local Indexes so that the conversion can restart at the right points */ \
-                 myTargetIndex = args->target - (char*)myTarget; \
-                 mySourceIndex = args->source - mySource; \
-                 args->offsets = saveOffsets; \
-                  for (;My_i < myTargetIndex;My_i++) args->offsets[My_i] += currentOffset; \
-                }
-/*
-*/
-#define ToU_CALLBACK_OFFSETS_LOGIC_MACRO(context, args, codePoints, length, reason, err) \
-                { \
-                      args->converter->fromCharErrorBehaviour ( \
-                                                 context, \
-                                                 args, \
-                                                 codePoints, \
-                                                 length, \
-                                                 reason, \
-                                                 err); \
-                  /*Update the local Indexes so that the conversion can restart at the right points */ \
-                 myTargetIndex = args->target - myTarget; \
-                 mySourceIndex = args->source - (const char*)mySource; \
-                 args->offsets = saveOffsets; \
-                  for (;My_i < myTargetIndex;My_i++) {args->offsets[My_i] += currentOffset;} \
-                }
 
 
 typedef void (*UConverterLoad) (UConverterSharedData *sharedData, const uint8_t *raw, UErrorCode *pErrorCode);