Multiple sclerosis, unspecified

This code represents a diagnosis of multiple sclerosis (MS) where the specific type or clinical course of the disease has not been documented by the provider. MS is a chronic, autoimmune, demyelinating disease of the central nervous system, characterized by a wide range of neurological symptoms.

Use this code when the medical record clearly indicates a diagnosis of multiple sclerosis, but lacks further specificity regarding its subtype (e.g., relapsing-remitting, primary progressive, secondary progressive) or the stage of the disease. This code is appropriate when the provider's documentation simply states "multiple sclerosis" without additional detail.

• Avoid using this code if the medical record provides sufficient detail to assign a more specific MS subtype (e.g., G35.A, G35.B).
• Always query the provider for greater specificity if possible, as more detailed codes offer better data for research and patient management.
• This code should be sequenced as the primary diagnosis when MS is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity.