Question: Michigan Subscriber Answer: The autologous vs. allogenic distinction, however, will be important when you code the transplant. You should choose 38241 (Bone marrow or blood-derived peripheral stem cell transplantation; autologous) for an autologous transplant, in which the physician takes stem cells from the patient before chemotherapy or radiation treatment. Following treatment, the patient receives those cells back. You may see this called a "rescue" transplant or "AuSCT." If the donor and patient are two separate individuals, you instead should report 38240 (... allogenic) for the transplant. Hint: