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    v1.0.28
    OpenPayerBilling CodesDiseases and Disorders of the Respiratory SystemDRG 185-major-chest-trauma-without-cc-mcc
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    Major Chest Trauma without CC/MCC: Inpatient Reimbursement Overview

    DRG 185 addresses inpatient cases of major chest trauma without Complication or Comorbidity or Major Complication or Comorbidity, covering significant thoracic injuries that require hospitalization but lack additional coded complications. Proper classification into this Diagnosis-Related Group matters because it determines grouping for Medicare prospective payment and aligns reimbursement with expected resource utilization for these injuries.

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    DRG 185 Overview

    DRG 185 covers inpatient admissions for patients with major chest trauma without a Complication or Comorbidity or Major Complication or Comorbidity. It typically includes significant thoracic injuries such as multiple rib fractures, pulmonary contusions, or flail chest that do not carry additional coded complications. This Diagnosis-Related Group matters for Medicare payment because it groups clinically similar cases with comparable resource use for prospective payment. Accurate clinical coding and documentation determine assignment to this Diagnosis-Related Group and thus influence reimbursement.

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    Clinical Trials

    • Studies of acute stabilization strategies for major blunt or penetrating chest trauma focusing on timing and techniques of chest tube placement, use of minimally invasive thoracoscopy, and protocols for managing flail chest and pulmonary contusions. These trials enroll adults hospitalized with significant chest wall injuries but without major comorbid complications (no CC/MCC) to compare short-term respiratory outcomes, need for mechanical ventilation, and length of stay across different acute procedural bundles. Results are directly relevant to clinicians developing care pathways and to payers because optimized early interventions can reduce ICU utilization, shorten hospital stays, and lower overall inpatient costs for this DRG.
    • Comparative effectiveness studies evaluating pain control and chest wall stabilization approaches (regional analgesia, multimodal opioid-sparing regimens, and surgical fixation) in patients with multiple rib fractures or flail segments who are otherwise without major complications. These studies target the perioperative and early recovery period to measure respiratory function, opioid consumption, complication rates, and readmission within 30 days, helping determine which approaches best preserve pulmonary mechanics and accelerate recovery. For providers and payers, evidence identifying strategies that reduce respiratory failure and downstream resource use informs reimbursement decisions and supports value-based pathways for chest trauma care under this DRG.
    • Post-discharge functional outcomes and rehabilitation trials assessing long-term respiratory function, pain, return-to-work, and quality of life in survivors of major chest trauma without CC/MCC, including comparative studies of structured outpatient pulmonary rehab versus usual care. These observational cohorts or randomized trials follow patients for months after hospital discharge to quantify persistent morbidity, need for outpatient services, and predictors of delayed recovery. Payers and health systems use this information to model post-acute care needs, justify investment in outpatient rehabilitation programs, and design bundled payment models that account for longer-term outcomes associated with 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

    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

    Showing 1–10 of 40

    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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