ICD-10-CM/PCS MS-DRG v37.1 R1 Definitions Manual
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Appendix A contains a list of each MS-DRG with a specification of the MDC and whether the MS-DRG is medical or surgical. Some MS-DRGs which contain patients from multiple MDCs (e.g., 014 Allogeneic Bone Marrow Transplant) do not have an MDC specified. The letter M is used to designate a medical MS-DRG and the letter P is used to designate a surgical MS-DRG.