Myasthenia gravis without (acute) exacerbation

This code signifies a chronic autoimmune neuromuscular disorder characterized by fluctuating muscle weakness and fatigue, without a sudden worsening of symptoms. It indicates a stable phase of myasthenia gravis, where the patient's condition is managed and not experiencing an acute exacerbation. The weakness typically affects voluntary muscles, such as those controlling eyes, face, swallowing, and limbs.

This code is appropriate for patients with a confirmed diagnosis of myasthenia gravis who are not currently experiencing an acute flare-up or crisis. Documentation should clearly state "myasthenia gravis without exacerbation" or similar phrasing indicating a stable, non-acute presentation. This code is used for ongoing management, routine follow-up, or when the condition is noted but not the primary reason for the encounter.

• Do not use this code if the patient is experiencing an acute worsening of their myasthenia gravis; instead, refer to codes for myasthenic crisis or acute exacerbation.
• Ensure documentation explicitly states the absence of an acute exacerbation to support the use of this code.
• Consider sequencing this code as a secondary diagnosis when the primary reason for the encounter is related to a complication or treatment of the stable myasthenia gravis.