Dry beriberi

This code represents dry beriberi, a neurological form of thiamine (vitamin B1) deficiency characterized by peripheral neuropathy, muscle weakness, and paralysis. It results from inadequate dietary intake or impaired absorption of thiamine, essential for carbohydrate metabolism and nerve function.

Use this code when documentation clearly indicates a diagnosis of dry beriberi, often presenting with symptoms like foot drop, wrist drop, or muscle atrophy. Supporting documentation should include clinical findings consistent with peripheral neuropathy and, ideally, laboratory confirmation of thiamine deficiency or a history of malnutrition.

• Differentiate from wet beriberi (E51.12), which primarily affects the cardiovascular system.
• Consider an additional code for the underlying cause of the thiamine deficiency, if known (e.g., alcoholism, malabsorption).
• Ensure documentation specifies "dry" beriberi to avoid confusion with other forms.