Personal history of Merkel cell carcinoma

This code indicates a patient's past diagnosis and successful treatment of Merkel cell carcinoma (MCC). It signifies that the patient no longer has active disease but requires ongoing surveillance due to their history of this aggressive neuroendocrine skin cancer. This history is crucial for risk assessment and future management.

Use this code for patients who have completed definitive treatment for Merkel cell carcinoma and are now in remission or under active surveillance. It should be applied when documenting follow-up visits, surveillance imaging, or any encounter where the patient's history of MCC is relevant to their current care. Do not use for active disease.

• Always sequence this code after any current, active conditions being treated.
• Ensure documentation clearly states "history of" or "personal history of" Merkel cell carcinoma, indicating the disease is no longer active.
• Do not use this code if the patient has recurrent or metastatic Merkel cell carcinoma; instead, code the active disease.