Personal history of antineoplastic chemotherapy

This code indicates that a patient has a past medical history of receiving chemotherapy for cancer treatment. It signifies that the patient has completed a course of antineoplastic therapy, but it does not imply active cancer or ongoing treatment.

Use this code when documenting a patient's medical history to indicate prior exposure to chemotherapy. This is relevant for patients undergoing follow-up care, surveillance, or treatment for unrelated conditions, where their past chemotherapy history may influence current medical management or risk assessment.

• Do not use this code for active chemotherapy treatment; instead, use codes from category Z51.1- (Encounter for antineoplastic chemotherapy).
• This code is typically a secondary diagnosis, providing historical context rather than the primary reason for the encounter.
• Ensure documentation clearly states "history of" or "prior" chemotherapy to support the use of this code.