Diagnosis Codes in MS-DRG 846 - Chemotherapy Without Acute Leukemia As Secondary Diagnosis With MCC

The Medicare Severity Diagnosis-Related Group (MS-DRG) is a patient classification system used to categorize hospital cases based on clinical similarity and expected resource use. MS-DRGs organize all possible principal diagnoses into mutually exclusive groups known as Major Diagnostic Categories (MDCs), which help determine reimbursement under the Medicare Inpatient Prospective Payment System.

This section lists the diagnosis codes included in MS-DRG V42.0: Chemotherapy without Acute Leukemia as Secondary Diagnosis with MCC from October 1, 2024, through September 30, 2025.

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    • Z08 - Encounter for follow-up examination after completed treatment for malignant neoplasm

  • Z51.1 - Encounter for antineoplastic chemotherapy and immunotherapy

    • Z51.11 - Encounter for antineoplastic chemotherapy

    • Z51.12 - Encounter for antineoplastic immunotherapy