Eosinophilia myalgia syndrome

This code represents a rare, multisystemic disorder characterized by severe myalgia and an elevated eosinophil count. It is primarily associated with the ingestion of L-tryptophan supplements. The syndrome can affect various organ systems, leading to diverse clinical manifestations.

Use this code for patients diagnosed with eosinophilia myalgia syndrome, typically presenting with muscle pain, fatigue, and peripheral eosinophilia. Documentation should clearly link the symptoms and laboratory findings to this specific diagnosis, often with a history of L-tryptophan exposure.

• Ensure documentation specifies the diagnosis of eosinophilia myalgia syndrome, not just isolated eosinophilia or myalgia.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter.
• Review for any associated organ involvement (e.g., pulmonary, neurological) that may require additional coding.