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    v1.0.30
    OpenPayerBilling CodesMyeloproliferative Diseases and Disorders, Poorly Differentiated NeoplasmsDRG 826-myeloproliferative-disorders-or-poorly-differentiated-neoplasms-with-major-o-r-procedures-with-mcc
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    Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with MCC: Inpatient Reimbursement Overview

    DRG 826 encompasses surgical inpatient stays for myeloproliferative disorders or poorly differentiated neoplasms that include major operating room procedures with a Major Complication or Comorbidity, reflecting high resource use and clinical complexity. This grouping matters for inpatient reimbursement because the combination of major procedures and Major Complication or Comorbidity drives Medicare Severity Diagnosis-Related Group assignment and higher payment relative to less complex cases.

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    DRG 826 Overview

    DRG 826 covers hospitalizations for myeloproliferative disorders or poorly differentiated neoplasms that involve major operating room procedures and include at least one Major Complication or Comorbidity. This Diagnosis-Related Group captures high-acuity surgical cases where complex hematologic malignancies or undifferentiated neoplasms require operative management and intensive inpatient resources. It matters for Medicare payment because the presence of a Major Complication or Comorbidity and a major operating room procedure increases resource intensity and influences Medicare Severity Diagnosis-Related Group assignment and reimbursement. Accurate clinical documentation and coding of the principal diagnosis, procedures, and Major Complication or Comorbidity are therefore central to proper payment.

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    Clinical Trials

    • Trials testing perioperative and intraoperative management strategies for patients with myeloproliferative neoplasms or poorly differentiated hematologic malignancies undergoing major operative procedures; these studies evaluate interventions such as blood product protocols, thrombosis and bleeding prophylaxis, and timing of cytoreductive therapy around surgery in a population at high risk for coagulopathy and transfusion needs. Such research focuses on immediate surgical outcomes, complication rates, and resource utilization, which is directly relevant to providers planning operative care and to payers interested in controlling costs and length of stay for DRG 826 admissions.
    • Comparative effectiveness studies of different inpatient critical-care or hematology-directed management pathways for patients with myeloproliferative disorders or poorly differentiated neoplasms presenting with acute complications (for example, severe splenomegaly, leukostasis, or marrow failure) that require major operative intervention; these trials compare standardized multidisciplinary care bundles, timing of intensive therapies, or escalation protocols. By studying real-world treatment approaches and outcomes such as ICU days, procedure-related morbidity, readmissions, and in-hospital mortality, these studies inform clinicians and payers about which care pathways yield better outcomes and more efficient resource use within this high-acuity DRG.
    • Post-discharge and longitudinal outcomes research assessing functional recovery, complications, readmission risk, and long-term healthcare utilization among survivors of major O.R. procedures for myeloproliferative disorders or poorly differentiated neoplasms; cohorts include patients discharged after operations complicated by major comorbidities or requiring ongoing hematologic management. These studies evaluate rehabilitation needs, outpatient transfusion or chemotherapy requirements, and predictors of costly readmissions, providing evidence for discharge planning, transitional-care interventions, and payer strategies to reduce preventable downstream costs associated with DRG 826 patients.

    Related Codes

    820-LYMPHOMA-AND-LEUKEMIA-WITH-MAJOR-O-R-PROCEDURES-WITH-MCC

    Lymphoma and Leukemia with Major O.R. Procedures with MCC: Inpatient Reimbursement Overview

    821-LYMPHOMA-AND-LEUKEMIA-WITH-MAJOR-O-R-PROCEDURES-WITH-CC

    Lymphoma and Leukemia with Major O.R. Procedures with CC: Inpatient Reimbursement Overview

    822-LYMPHOMA-AND-LEUKEMIA-WITH-MAJOR-O-R-PROCEDURES-WITHOUT-CC-MCC

    Lymphoma and Leukemia with Major O.R. Procedures without CC/MCC: Inpatient Reimbursement Overview

    823-LYMPHOMA-AND-NON-ACUTE-LEUKEMIA-WITH-OTHER-PROCEDURES-WITH-MCC

    Lymphoma and Non-Acute Leukemia with Other Procedures with MCC: Inpatient Reimbursement Overview

    824-LYMPHOMA-AND-NON-ACUTE-LEUKEMIA-WITH-OTHER-PROCEDURES-WITH-CC

    Lymphoma and Non-Acute Leukemia with Other Procedures with CC: Inpatient Reimbursement Overview

    825-LYMPHOMA-AND-NON-ACUTE-LEUKEMIA-WITH-OTHER-PROCEDURES-WITHOUT-CC-MCC

    Lymphoma and Non-Acute Leukemia with Other Procedures without CC/MCC: Inpatient Reimbursement Overview

    827-MYELOPROLIFERATIVE-DISORDERS-OR-POORLY-DIFFERENTIATED-NEOPLASMS-WITH-MAJOR-O-R-PROCEDURES-WITH-CC

    Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with CC: Inpatient Reimbursement Overview

    828-MYELOPROLIFERATIVE-DISORDERS-OR-POORLY-DIFFERENTIATED-NEOPLASMS-WITH-MAJOR-O-R-PROCEDURES-WITHOUT-CC-MCC

    Myeloproliferative Disorders or Poorly Differentiated Neoplasms: Inpatient Reimbursement Overview

    829-MYELOPROLIFERATIVE-DISORDERS-OR-POORLY-DIFFERENTIATED-NEOPLASMS-WITH-OTHER-PROCEDURES-WITH-CC-MCC

    Myeloproliferative Disorders or Poorly Differentiated Neoplasms: Inpatient Reimbursement Overview

    830-MYELOPROLIFERATIVE-DISORDERS-OR-POORLY-DIFFERENTIATED-NEOPLASMS-WITH-OTHER-PROCEDURES-WITHOUT-CC-MCC

    Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Other Procedures without CC/MCC: 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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