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    OpenPayerBilling CodesDiseases and Disorders of the Respiratory SystemDRG 168-other-respiratory-system-o-r-procedures-without-cc-mcc
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    Other Respiratory System O.R. Procedures without CC/MCC: Inpatient Reimbursement Overview

    DRG 168 includes other respiratory system operating room procedures without a Complication or Comorbidity or Major Complication or Comorbidity, typically covering lower-severity thoracic operations. Proper assignment affects inpatient reimbursement because it determines the bundled Diagnosis-Related Group payment rate under Medicare.

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    DRG 168 Overview

    DRG 168 covers inpatient admissions for other respiratory system operations performed in an operating room without the presence of a Complication or Comorbidity or Major Complication or Comorbidity. This Diagnosis-Related Group applies to procedures such as diagnostic or minor therapeutic thoracic surgeries that do not carry higher-risk secondary diagnoses. It matters for Medicare payment because classification into this group influences the bundled payment amount and hospital reimbursement for the episode of care. Accurate coding and documentation determine whether an admission is assigned to this lower-severity payment category.

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    Clinical Trials

    • Acute perioperative airway management trials: studies evaluating interventions to reduce intraoperative and immediate postoperative respiratory complications in patients undergoing non-major respiratory surgeries (for example, bronchoscopic interventions, pleural procedures, or minor thoracic surgeries) without major comorbid conditions. These trials enroll adults who require airway manipulation or short-duration thoracic procedures and measure outcomes such as perioperative hypoxemia, need for unplanned intensive care transfer, and duration of mechanical ventilation. Findings are relevant to clinicians and payers because reducing short-term respiratory complications can shorten length of stay and lower costs associated with unplanned escalation of care in this DRG.
    • Comparative effectiveness research of procedural approaches and anesthesia strategies: randomized or observational studies comparing different surgical techniques (for example, minimally invasive versus open approaches when applicable), anesthesia modalities (general anesthesia with endotracheal intubation versus monitored anesthesia care), or perioperative analgesia protocols for patients undergoing other respiratory system O.R. procedures without major complications. These studies focus on patients judged to be low or moderate risk (no CC/MCC), assessing outcomes such as postoperative pulmonary function, pain control, complication rates, and time to discharge. Results inform providers and payers about which approaches optimize recovery and resource use for this specific DRG population, guiding protocol selection and reimbursement policy for efficiently delivered care.
    • Post-discharge recovery and readmission prevention studies: prospective cohort studies or intervention trials targeting early outpatient follow-up, pulmonary rehabilitation initiation, or home-based monitoring for patients after non-complicated respiratory procedures to reduce 30-day readmissions and functional decline. These studies enroll patients classified without CC/MCC who are discharged directly home, evaluating symptom trajectories, adherence to follow-up, and healthcare utilization after discharge. Evidence from this research helps payers and health systems design cost-effective care pathways and transitional care programs to prevent avoidable readmissions and improve patient-centered outcomes in this DRG.

    Related Codes

    163-MAJOR-CHEST-PROCEDURES-WITH-MCC

    Major Chest Procedures with MCC: Inpatient Reimbursement Overview

    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

    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.