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Major Small and Large Bowel Procedures with MCC: Inpatient Reimbursement Overview
DRG 329 encompasses major small and large bowel procedures performed in the presence of a Major Complication or Comorbidity and is used to classify high-acuity surgical admissions for inpatient reimbursement. It matters for Medicare payment because the presence of a Major Complication or Comorbidity increases the Diagnosis-Related Group severity assignment and typically results in higher inpatient reimbursement to reflect greater resource use.
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DRG 329 Overview
DRG 329 covers major small and large bowel surgical procedures when a Major Complication or Comorbidity is present, typically including extensive resections, anastomoses, or procedures for perforation, ischemia, obstruction, or severe inflammatory disease with significant physiologic instability. This Diagnosis-Related Group groups higher-resource cases with critical intraoperative or postoperative complexity, which increases allowable Medicare inpatient reimbursement relative to less complex bowel procedure groups. Accurate capture of principal procedure codes and documented Major Complication or Comorbidity drives appropriate payment assignment. The grouping reflects expected higher resource use, longer inpatient stays, and greater clinical intensity.