D56.3

What This Code Means

A mild form of thalassemia (a genetic blood disorder affecting hemoglobin production) where a person carries one gene for thalassemia. Most people with thalassemia minor have few or no symptoms.

Coding Tips

• •Thalassemia minor is often asymptomatic; document any clinical manifestations if present
• •Distinguish from thalassemia major (D56.1) and thalassemia intermedia, which are more severe