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    v1.0.30
    OpenPayerBilling CodesDiseases and Disorders of the Nervous SystemDRG 025-craniotomy-and-endovascular-intracranial-procedures-with-mcc
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    Craniotomy and Endovascular Intracranial Procedures with MCC: Inpatient Reimbursement Overview

    DRG 025 encompasses craniotomy and endovascular intracranial procedures with a Major Complication or Comorbidity, representing high-acuity neurosurgical and neurointerventional admissions. Correct assignment affects inpatient reimbursement under Medicare Severity Diagnosis-Related Group payment because the Major Complication or Comorbidity status increases expected resource use and payment.

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    DRG 025 Overview

    DRG 025 covers inpatient hospital admissions for craniotomy and endovascular intracranial procedures when a Major Complication or Comorbidity is present. This category includes complex neurovascular and intracranial surgical interventions accompanied by significant comorbid conditions that increase resource use. It matters for Medicare payment because the presence of a Major Complication or Comorbidity elevates the relative reimbursement to account for higher expected costs and intensity of care. Accurate coding of diagnoses and procedures determines placement into this higher-weighted Diagnosis-Related Group for Medicare Severity Diagnosis-Related Group payment.

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    Clinical Trials

    • Acute procedural intervention trials evaluating novel surgical or endovascular techniques for intracranial hemorrhage or complex cerebrovascular lesions (for example, randomized or protocolized studies comparing minimally invasive craniotomy approaches, new endovascular device deployment strategies, or adjunctive intraoperative monitoring). These trials enroll patients in the immediate perioperative period who require craniotomy or intracranial endovascular procedures with major complications or high resource use, and they assess short-term neurologic outcomes, complication rates, procedure-related mortality, and ICU length of stay. Results are directly relevant to providers and payers because they can influence choice of operative technique, perioperative care pathways, and acute resource allocation for high-cost DRG 025 admissions.
    • Comparative effectiveness studies of perioperative and critical care management strategies targeting patients with severe intracranial pathologies (such as studies comparing protocols for intracranial pressure management, timing and intensity of neurocritical care interventions, blood pressure and anticoagulation reversal strategies, or transfusion thresholds). These non-device trials typically enroll heterogeneous populations within the DRG—patients with traumatic brain injury, ruptured aneurysm complications, or hemorrhagic conversion after ischemic stroke complicated by major comorbidities—and measure outcomes like neurologic functional status at discharge, rates of major complications (MCC-level events), length of ICU and total stay, and readmission. Findings inform bundled-care protocols, case-mix adjustment, and payer decisions on reimbursement for intensive monitoring and high-cost therapies associated with DRG 025.
    • Post-discharge and health services research assessing long-term outcomes, rehabilitation needs, and cost-effectiveness for survivors of craniotomy or intracranial endovascular procedures who experienced major complications. These cohort or registry-based studies follow patients after hospital discharge to evaluate functional recovery trajectories, utilization of inpatient and outpatient rehabilitation, long-term mortality and readmission patterns, and economic impact of different discharge dispositions. This research helps providers optimize discharge planning and transitional care, and helps payers and health systems predict downstream costs and design coverage or case-management programs for this high-acuity DRG population.

    Related Codes

    020-INTRACRANIAL-VASCULAR-PROCEDURES-WITH-PRINCIPAL-DIAGNOSIS-HEMORRHAGE-WITH-MCC

    Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with MCC: Inpatient Reimbursement Overview

    021-INTRACRANIAL-VASCULAR-PROCEDURES-WITH-PRINCIPAL-DIAGNOSIS-HEMORRHAGE-WITH-CC

    Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with CC: Inpatient Reimbursement Overview

    022-INTRACRANIAL-VASCULAR-PROCEDURES-WITH-PRINCIPAL-DIAGNOSIS-HEMORRHAGE-WITHOUT-CC-MCC

    Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage without CC/MCC: Inpatient Reimbursement Overview

    023-CRANIOTOMY-WITH-MAJOR-DEVICE-IMPLANT-OR-ACUTE-COMPLEX-CNS-PRINCIPAL-DIAGNOSIS-WITH-MCC-OR-ANTINEOPLASTIC-IMPLANT-OR-EPILEPSY-WITH-NEUROSTIMULATOR

    Craniotomy with Major Device Implant or Complex CNS DRG 023: Inpatient Reimbursement Overview

    024-CRANIOTOMY-WITH-MAJOR-DEVICE-IMPLANT-OR-ACUTE-COMPLEX-CNS-PRINCIPAL-DIAGNOSIS-WITHOUT-MCC

    Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC: Inpatient Reimbursement Overview

    026-CRANIOTOMY-AND-ENDOVASCULAR-INTRACRANIAL-PROCEDURES-WITH-CC

    Craniotomy and Endovascular Intracranial Procedures with CC: Inpatient Reimbursement Overview

    027-CRANIOTOMY-AND-ENDOVASCULAR-INTRACRANIAL-PROCEDURES-WITHOUT-CC-MCC

    Craniotomy and Endovascular Intracranial Procedures without CC/MCC: Inpatient Reimbursement Overview

    028-SPINAL-PROCEDURES-WITH-MCC

    Spinal Procedures with MCC: Inpatient Reimbursement Overview

    029-SPINAL-PROCEDURES-WITH-CC-OR-SPINAL-NEUROSTIMULATORS

    Spinal Procedures with CC or Spinal Neurostimulators: Inpatient Reimbursement Overview

    030-SPINAL-PROCEDURES-WITHOUT-CC-MCC

    Spinal 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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