Medical Coding Practice Test

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When is "NOS" used in ICD-9-CM coding?

For conditions requiring further classification

When additional codes are available

When a more detailed code is needed

When no further information is available to define a condition

"NOS" stands for "Not Otherwise Specified" in ICD-9-CM coding. It is used when no further information is available to define a condition fully. This indicates that the healthcare provider does not have more specific information about the diagnosis, and therefore, the code is assigned as "NOS". It is important in medical coding to be as specific as possible, but when the specific details are lacking, "NOS" is used to indicate this lack of further information.

Regarding the other choices:

A. "NOS" is not used for conditions requiring further classification, as in such cases, the goal is to specify the condition more precisely.

B. "NOS" is not used when additional codes are available, as other available codes may provide more specific information.

C. "NOS" is not used when a more detailed code is needed; instead, a more detailed code should be assigned when possible.

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