DRG 335 Overview

DRG 335 covers inpatient admissions for peritoneal adhesiolysis when a Major Complication or Comorbidity is present, typically involving operative disruption of abdominal or pelvic adhesions with significant additional diagnoses that increase resource use. This Diagnosis-Related Group is relevant to general surgery and surgical subspecialties managing postoperative or inflammatory adhesive disease. It matters for Medicare payment because the presence of a Major Complication or Comorbidity elevates the grouping and generally increases reimbursement to reflect higher expected costs and longer hospital stays. Accurate documentation of procedures and coexisting severe conditions is essential to ensure the correct Diagnosis-Related Group assignment.

• Acute operative technique and perioperative care trials: randomized or pragmatic studies comparing different surgical approaches, perioperative hemostasis strategies, or enhanced recovery pathways specifically in adult patients undergoing open or laparoscopic peritoneal adhesiolysis for adhesive small bowel obstruction or complex intra-abdominal adhesions with major complication or comorbidity (MCC). These trials focus on short-term outcomes such as time to return of bowel function, intraoperative blood loss, transfusion needs, operative time, and 30-day morbidity/mortality, providing evidence on which intraoperative and immediate postoperative practices reduce complications and resource use. Results are directly relevant to surgeons, hospital administrators, and payers because improvements that shorten length of stay, lower reoperation or intensive care needs, or decrease complication rates affect DRG payments and total episode costs.
• Comparative effectiveness studies of nonoperative vs. operative management pathways in high-risk patients: observational cohorts or pragmatic trials assessing the outcomes of conservative management (nasogastric decompression, bowel rest, percutaneous drainage) versus early adhesiolysis in patients with adhesive obstruction who have significant comorbidities (MCC) or prior multiple abdominal operations. These studies examine rates of resolution without surgery, delayed surgery, complication profiles, readmissions, and long-term adhesive disease recurrence, helping to define which subgroups benefit from immediate surgery versus an initial nonoperative approach. This evidence helps clinicians individualize care for medically complex patients and helps payers and care managers allocate resources by identifying strategies that minimize costly complications and readmissions within this DRG population.
• Post-discharge functional recovery, quality-of-life, and health-economics studies: prospective cohort studies or registry-based analyses following patients after peritoneal adhesiolysis with MCC to measure long-term outcomes such as chronic pain, bowel dysfunction, return-to-work, readmission rates, and cumulative healthcare utilization over 90–365 days. These studies often include risk stratification by intraoperative findings and comorbidity burden, and evaluate interventions like targeted physiotherapy or care coordination that may reduce long-term disability. Findings inform discharge planning, rehabilitation needs, and value-based payment models by identifying drivers of prolonged recovery and downstream costs that affect total cost-of-care under the DRG.