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    v1.0.28
    OpenPayerBilling CodesDiseases and Disorders of the Respiratory SystemDRG 188-pleural-effusion-without-cc-mcc
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    Pleural Effusion without CC/MCC: Inpatient Reimbursement Overview

    DRG 188 addresses admissions for pleural effusion without Complication or Comorbidity or Major Complication or Comorbidity, encompassing management of uncomplicated pleural fluid accumulation. It matters for inpatient reimbursement because the Diagnosis-Related Group assignment influences the Medicare payment level based on documented clinical complexity and resource use.

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    DRG 188 Overview

    DRG 188 covers hospital admissions for pleural effusion without a Complication or Comorbidity or Major Complication or Comorbidity. It includes cases where pleural fluid accumulation is managed without secondary diagnoses that increase clinical complexity. This Diagnosis-Related Group matters for Medicare payment because it assigns a relative weight and payment level reflecting lower resource use compared with pleural effusion cases that have additional complications. Accurate coding and documentation determine whether an admission is classified in this DRG and thus affect inpatient reimbursement.

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    Clinical Trials

    • Acute procedural trials evaluating diagnostic and therapeutic thoracentesis techniques: studies in this area compare procedural approaches (ultrasound-guided vs landmark-guided thoracentesis, small-bore catheter drainage protocols, or single versus repeated taps) in hospitalized adults admitted with pleural effusion without major comorbidities. The patient population typically includes medically stable inpatients with symptomatic transudative or uncomplicated exudative effusions where immediate fluid removal can provide symptom relief and diagnostic yield. These studies are relevant to providers and payers because optimizing procedural safety, reducing length of stay, and preventing complications can lower inpatient costs and improve throughput for this DRG.
    • Comparative effectiveness studies of etiologic workup and inpatient management pathways: trials or observational comparative research examine standardized diagnostic algorithms (e.g., routine pleural fluid analysis panels, imaging pathways, and criteria for infectious versus noninfectious management) versus usual care in adults with pleural effusion without CC/MCC. These studies focus on patients whose effusions are not associated with severe comorbid conditions, aiming to determine which diagnostic sequences most efficiently identify cause (congestive heart failure, hepatic hydrothorax, uncomplicated parapneumonic effusion) and guide targeted medical therapy. Results inform clinicians and payers by identifying care pathways that reduce unnecessary testing, shorten hospitalization, and improve appropriate resource allocation for this relatively lower-severity DRG.
    • Post-discharge outcomes and readmission prevention studies: prospective cohorts and interventional trials assess follow-up models (early outpatient clinic review, home monitoring, or nurse-led telehealth) and their effect on symptom recurrence, need for repeat drainage, and 30-day readmissions among patients discharged after treatment for pleural effusion without CC/MCC. The population includes patients discharged after successful inpatient management of uncomplicated effusions, often with underlying chronic conditions like heart failure or cirrhosis that predispose to recurrence. Research here is relevant to payers and hospital systems because reducing readmissions and unplanned returns improves patient outcomes and can materially impact reimbursements and quality metrics tied to 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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