diff --git a/icu4c/source/i18n/number_mapper.cpp b/icu4c/source/i18n/number_mapper.cpp
index 2f398d4a9392..457fbc0d0712 100644
--- a/icu4c/source/i18n/number_mapper.cpp
+++ b/icu4c/source/i18n/number_mapper.cpp
@@ -74,9 +74,11 @@ MacroProps NumberPropertyMapper::oldToNew(const DecimalFormatProperties& propert
             !properties.currencyPluralInfo.fPtr.isNull() ||
             !properties.currencyUsage.isNull() ||
             warehouse.affixProvider.get().hasCurrencySign());
-    CurrencyUnit currency = resolveCurrency(properties, locale, status);
-    UCurrencyUsage currencyUsage = properties.currencyUsage.getOrDefault(UCURR_USAGE_STANDARD);
+    CurrencyUnit currency;
+    UCurrencyUsage currencyUsage;
     if (useCurrency) {
+        currency = resolveCurrency(properties, locale, status);
+        currencyUsage = properties.currencyUsage.getOrDefault(UCURR_USAGE_STANDARD);
         // NOTE: Slicing is OK.
         macros.unit = currency; // NOLINT
     }
@@ -129,6 +131,7 @@ MacroProps NumberPropertyMapper::oldToNew(const DecimalFormatProperties& propert
     }
     Precision precision;
     if (!properties.currencyUsage.isNull()) {
+        U_ASSERT(useCurrency);
         precision = Precision::constructCurrency(currencyUsage).withCurrency(currency);
     } else if (roundingIncrement != 0.0) {
         if (PatternStringUtils::ignoreRoundingIncrement(roundingIncrement, maxFrac)) {
@@ -276,7 +279,7 @@ MacroProps NumberPropertyMapper::oldToNew(const DecimalFormatProperties& propert
         exportedProperties->maximumIntegerDigits = maxInt == -1 ? INT32_MAX : maxInt;
 
         Precision rounding_;
-        if (precision.fType == Precision::PrecisionType::RND_CURRENCY) {
+        if (useCurrency && precision.fType == Precision::PrecisionType::RND_CURRENCY) {
             rounding_ = precision.withCurrency(currency, status);
         } else {
             rounding_ = precision;