AHA Coding Clinic® for ICD-9 - 2008 Issue 4; VOLUMES 1 AND 2 NEW/REVISED CODES

Graft Versus Host Disease

Effective October 1, 2008 category 279.5, Disorders involving the immune mechanism, has been created for graft versus host (GVH) disease, the reaction to donated stem cells. GVH disease occurs most often as a complication of bone marrow transplant, so it was classified to code 996.85, Complications of transplanted organ, bone marrow. However, GVH disease may rarely occur following blood transfusion or any organ transplant where white blood cells are present. GVH disease results when donor cells that are responsible for the body’s immune response (T lymphocytes) attack the cells of the recipient. Even when...

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