Malignant neoplasm associated with transplanted organ

This code identifies a primary malignant neoplasm that has developed in a patient who has undergone an organ transplant. It specifically indicates a malignancy that is considered a direct consequence or complication of the transplanted organ itself, rather than a recurrence of a prior cancer or a new primary unrelated to the transplant.

Use this code when documentation clearly states a malignant neoplasm has arisen in the context of an organ transplant, and the transplant is implicated in its etiology. This often applies to post-transplant lymphoproliferative disorders (PTLD) or other de novo malignancies directly linked to immunosuppression or the transplanted organ. The physician's notes should explicitly connect the malignancy to the transplanted organ.

• Always sequence the specific type of malignant neoplasm first, followed by this code.
• Do not use for recurrence of a pre-existing malignancy that was present before the transplant.
• Distinguish from malignancies that are merely coincidental in a transplant patient but not directly associated with the transplanted organ.