Standardization of terminology for episodes of hematopoietic stem cell patient transplant care.

The nomenclature describing hematopoietic stem cell transplantation has evolved, adding precision and definition in research and regulation. The lack of coordination and standardization in terminology has left some gaps in the definition of episodes of clinical care. These voids have caused particular problems in contracting for payment and billing for services rendered. The purpose of this report is to propose definitions for cell products, cell infusions, and transplantation episodes.