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    v1.0.30
    OpenPayerBilling CodesDiseases and Disorders of the Respiratory SystemDRG 163-major-chest-procedures-with-mcc
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    Major Chest Procedures with MCC: Inpatient Reimbursement Overview

    DRG 163 encompasses major chest surgeries with an associated Major Complication or Comorbidity, capturing high-acuity thoracic procedures that require substantial inpatient resources. Recognizing this Diagnosis-Related Group is important for inpatient reimbursement because the Major Complication or Comorbidity designation increases payment relative to comparable chest procedure groups without such complications.

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    DRG 163 Overview

    DRG 163 covers major thoracic surgical procedures involving the chest, such as extensive lung resections or complex mediastinal operations, when a Major Complication or Comorbidity is present. This Diagnosis-Related Group groups high-resource, high-acuity chest surgeries that result in greater inpatient resource use. It matters for Medicare payment because the presence of a Major Complication or Comorbidity increases the relative weight and reimbursement compared with similar procedures without such complications. Accurate clinical documentation and coding that reflect the Major Complication or Comorbidity affect hospital payment and case mix.

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    Clinical Trials

    • Acute perioperative intervention trials focusing on strategies to reduce immediate morbidity and mortality after major thoracic surgery with complications (MCC). These studies evaluate interventions such as enhanced intraoperative ventilation protocols, optimized fluid and transfusion strategies, or bundles to prevent postoperative respiratory failure in patients undergoing lobectomy, pneumonectomy, esophagectomy, or complex chest trauma repair who develop critical complications. Results inform providers on practices that shorten ICU stays and reduce complications, and inform payers about cost drivers and potential targets for bundled-payment quality metrics.
    • Comparative effectiveness studies of surgical approaches and perioperative pathways in high-risk chest-procedure patients with significant comorbidities. Trials compare outcomes between different operative techniques (open versus minimally invasive approaches when feasible), anesthesia and analgesia regimens, or standardized ERAS-like pathways in populations with major cardiac, pulmonary, or infectious complications that qualify as MCC. These studies help clinicians choose approaches that balance safety and recovery for complex patients and help payers understand which pathways reduce readmissions and resource utilization.
    • Post-discharge outcomes and rehabilitation research examining long-term functional recovery, respiratory rehabilitation, and readmission prevention in survivors of major chest procedures complicated by MCC. Cohorts include patients discharged after prolonged ICU stays, mechanical ventilation, or complex postoperative infections, assessing interventions such as structured pulmonary rehabilitation, home health monitoring, and care-coordination models to reduce late morbidity. Findings are relevant to providers planning discharge and follow-up care and to payers assessing the value of post-acute services that may lower long-term costs and improve patient-centered outcomes.

    Related Codes

    164-MAJOR-CHEST-PROCEDURES-WITH-CC

    Major Chest Procedures with CC: Inpatient Reimbursement Overview

    165-MAJOR-CHEST-PROCEDURES-WITHOUT-CC-MCC

    Major Chest Procedures without CC/MCC: Inpatient Reimbursement Overview

    166-OTHER-RESPIRATORY-SYSTEM-O-R-PROCEDURES-WITH-MCC

    Other Respiratory System O.R. Procedures with MCC: Inpatient Reimbursement Overview

    167-OTHER-RESPIRATORY-SYSTEM-O-R-PROCEDURES-WITH-CC

    Other Respiratory System O.R. Procedures with CC: Inpatient Reimbursement Overview

    168-OTHER-RESPIRATORY-SYSTEM-O-R-PROCEDURES-WITHOUT-CC-MCC

    Other Respiratory System O.R. Procedures without CC/MCC: Inpatient Reimbursement Overview

    173-ULTRASOUND-ACCELERATED-AND-OTHER-THROMBOLYSIS-WITH-PRINCIPAL-DIAGNOSIS-PULMONARY-EMBOLISM

    Ultrasound Accelerated and Other Thrombolysis with Principal Diagnosis Pulmonary Embolism: Inpatient Reimbursement Overview

    175-PULMONARY-EMBOLISM-WITH-MCC-OR-ACUTE-COR-PULMONALE

    Pulmonary Embolism with MCC or Acute Cor Pulmonale: Inpatient Reimbursement Overview

    176-PULMONARY-EMBOLISM-WITHOUT-MCC

    Pulmonary Embolism without MCC: Inpatient Reimbursement Overview

    177-RESPIRATORY-INFECTIONS-AND-INFLAMMATIONS-WITH-MCC

    Respiratory Infections and Inflammations with MCC: Inpatient Reimbursement Overview

    178-RESPIRATORY-INFECTIONS-AND-INFLAMMATIONS-WITH-CC

    Respiratory Infections and Inflammations with CC: Inpatient Reimbursement Overview

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    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.