Drug-induced aplastic anemia

This code signifies a severe bone marrow failure where the body stops producing enough new blood cells (red, white, and platelets), specifically caused by an adverse reaction to a medication. It represents a form of aplastic anemia directly attributable to drug exposure, leading to pancytopenia.

Assign this code when documentation clearly links a patient's aplastic anemia to a specific drug or chemical agent. This diagnosis requires a confirmed causal relationship between medication use and the development of bone marrow aplasia. Supporting documentation should include a detailed medication history and laboratory findings consistent with aplastic anemia.

• Always identify the specific drug causing the aplastic anemia using an additional code from T36-T50, with the appropriate 5th or 6th character indicating adverse effect.
• Distinguish this from other forms of aplastic anemia (e.g., idiopathic, constitutional) where a drug etiology is not established.
• Ensure the provider's documentation explicitly states "drug-induced" or otherwise clearly links the anemia to a medication.