Multiple sclerosis is a condition of the system and is reported in Chapter 6 of ICD-10-CM.

Nervous system

Explanation:

Multiple sclerosis -

It is the medical condition , which disables the central nervous system consisting spinal cord and brain .

In this scenario , the immune system attacks the protective sheath , which wraps the nerve fibers .

Due to which , the communication between the nerves is stopped , and the coordination amongst the various organs stops .

There is no proper cure for such medical condition .

Hence , from the given statement of the question ,

The correct term is Nervous system .

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