diff --git a/icu4c/source/i18n/unicode/numberformatter.h b/icu4c/source/i18n/unicode/numberformatter.h
index 9175720d49b..4fd6830518d 100644
--- a/icu4c/source/i18n/unicode/numberformatter.h
+++ b/icu4c/source/i18n/unicode/numberformatter.h
@@ -2437,15 +2437,31 @@ class U_I18N_API FormattedNumber : public UMemory, public FormattedValue {
      */
     FormattedNumber& operator=(FormattedNumber&& src) U_NOEXCEPT;
 
-    /** @copydoc FormattedValue::toString() */
+    // Copybrief: this method is older than the parent method
+    /**
+     * @copybrief FormattedValue::toString()
+     *
+     * For more information, see FormattedValue::toString()
+     *
+     * @draft ICU 62
+     */
     UnicodeString toString(UErrorCode& status) const U_OVERRIDE;
 
+    // Copydoc: this method is new in ICU 64
     /** @copydoc FormattedValue::toTempString() */
     UnicodeString toTempString(UErrorCode& status) const U_OVERRIDE;
 
-    /** @copydoc FormattedValue::appendTo() */
+    // Copybrief: this method is older than the parent method
+    /**
+     * @copybrief FormattedValue::appendTo()
+     *
+     * For more information, see FormattedValue::appendTo()
+     *
+     * @draft ICU 62
+     */
     Appendable &appendTo(Appendable& appendable, UErrorCode& status) const U_OVERRIDE;
 
+    // Copydoc: this method is new in ICU 64
     /** @copydoc FormattedValue::nextPosition() */
     UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const U_OVERRIDE;
 
diff --git a/icu4c/source/i18n/unicode/numberrangeformatter.h b/icu4c/source/i18n/unicode/numberrangeformatter.h
index 2c48adcff6d..4a386b80394 100644
--- a/icu4c/source/i18n/unicode/numberrangeformatter.h
+++ b/icu4c/source/i18n/unicode/numberrangeformatter.h
@@ -694,24 +694,32 @@ class U_I18N_API LocalizedNumberRangeFormatter
  */
 class U_I18N_API FormattedNumberRange : public UMemory, public FormattedValue {
   public:
+    // Copybrief: this method is older than the parent method
     /**
-     * @copydoc FormattedValue::toString()
+     * @copybrief FormattedValue::toString()
+     *
+     * For more information, see FormattedValue::toString()
+     *
+     * @draft ICU 63
      */
     UnicodeString toString(UErrorCode& status) const U_OVERRIDE;
 
-    /**
-     * @copydoc FormattedValue::toTempString()
-     */
+    // Copydoc: this method is new in ICU 64
+    /** @copydoc FormattedValue::toTempString() */
     UnicodeString toTempString(UErrorCode& status) const U_OVERRIDE;
 
+    // Copybrief: this method is older than the parent method
     /**
-     * @copydoc FormattedValue::appendTo()
+     * @copybrief FormattedValue::appendTo()
+     *
+     * For more information, see FormattedValue::appendTo()
+     *
+     * @draft ICU 63
      */
     Appendable &appendTo(Appendable &appendable, UErrorCode& status) const U_OVERRIDE;
 
-    /**
-     * @copydoc FormattedValue::nextPosition()
-     */
+    // Copydoc: this method is new in ICU 64
+    /** @copydoc FormattedValue::nextPosition() */
     UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const U_OVERRIDE;
 
     /**