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Chiropractic Coding & Compliance Alert

Reader Question:

How to Interpret NEC and NOS in ICD-10

Question: I was looking at the ICD-10-CM manual, and I noticed NEC and NOS. I know they stand for Not Elsewhere Classifiable (NEC) and Not Otherwise Specified (NOS), but how should I use them in ICD-10-CM?

California Subscriber

Answer: Like ICD-9, the NEC (Not Elsewhere Classifiable) abbreviation contains codes for “other” types of specified conditions that haven’t already been classified. When your physician doesn’t clearly specify the condition, you can use a NOS (Not Otherwise Specified) code — although payers usually frown upon this process. 


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