Final answer:
The correct note is 'Excludes2', which means that the two conditions aren't usually coded together, but it is possible if the clinical scenario justifies it.
Step-by-step explanation:
The note that indicates that normally the two conditions aren't coded together, but sometimes they are, is C) Excludes2. The 'Excludes2' note in medical coding signifies that the conditions excluded are not part of the condition represented by the code, but a patient may have both conditions at the same time. In other words, it allows for the possibility that both can be coded concurrently if the clinical circumstances warrant it. This is in contrast to an 'Excludes1' note, which indicates that the conditions are mutually exclusive and should never be coded together.