diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/IVUSCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/IVUSCalculateService.cs
index 8f58b5c82..969e93c57 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/IVUSCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/IVUSCalculateService.cs
@@ -505,7 +505,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                     else if (calculate.GetDecimalNullFun != null)
                     {
                         var value = await calculate.GetDecimalNullFun(inDto);
-                        item.Answer = value == null ? "NA" : value.Value.ToString();
+                        item.Answer = value == null ? "NE" : value.Value.ToString();
                     }
                     else if (calculate.GetStringFun != null)
                     {
diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/OCTCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/OCTCalculateService.cs
index 4a45aa158..f00f83cd3 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/OCTCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/OCTCalculateService.cs
@@ -815,7 +815,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
                     else if (calculate.GetDecimalNullFun != null)
                     {
                         var value = await calculate.GetDecimalNullFun(inDto);
-                        item.Answer = value == null ? "NA" : value.Value.ToString();
+                        item.Answer = value == null ? "NE" : value.Value.ToString();
                     }
                     else if (calculate.GetStringFun != null)
                     {