What is the proper way to code non-ischemic cardiomyopathy: I42.8 Other Cardiomyopathies OR I42.9 Cardiomyopathy, unspecified?
Other and NEC (Not elsewhere classified) are for when a condition is named but not indexable in ICD 10. Unspecified or NOS is used when I condition is simply not named.
Be that as it may "non-ischemic" not specified because telling me what it isn't in no way tells me what it really is, therefore it would fall to the unspecified category.
If he had said something like "ACDIS forum cardiomyopathy" it would be named but not indexable and would fall to other/NEC.