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  3. Diagnosis Codes in MS-DRG 181 - Respiratory Neoplasms With CC

Diagnosis Codes in MS-DRG 181 - Respiratory Neoplasms With CC

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: Respiratory Neoplasms with CC from October 1, 2024, through September 30, 2025.

MS-DRG: 181

MS-DRG Title: Respiratory Neoplasms with CC

MCD: 04

Relative Weight: 1.1102 Relative Weight
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Geometric LOS: 1.11 Geometric Length of Stay
The geometric mean length of stay (GMLOS) is used by Medicare to calculate the reimbursement for patients whose medical treatment takes a much longer or shorter time than average.

Arithmetic LOS: 3.10 Arithmetic Length of Stay
The average length of stay (ALOS) reflects the average number of days a patient spends in a hospital for each admission.

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    • C33 - Malignant neoplasm of trachea

  • C34 - Malignant neoplasm of bronchus and lung

    • C34.2 - Malignant neoplasm of middle lobe, bronchus or lung

  • C34.0 - Malignant neoplasm of main bronchus

    • C34.00 - Malignant neoplasm of unspecified main bronchus

    • C34.01 - Malignant neoplasm of right main bronchus

    • C34.02 - Malignant neoplasm of left main bronchus

  • C34.1 - Malignant neoplasm of upper lobe, bronchus or lung

    • C34.10 - Malignant neoplasm of upper lobe, unspecified bronchus or lung

    • C34.11 - Malignant neoplasm of upper lobe, right bronchus or lung

    • C34.12 - Malignant neoplasm of upper lobe, left bronchus or lung

  • C34.3 - Malignant neoplasm of lower lobe, bronchus or lung

    • C34.30 - Malignant neoplasm of lower lobe, unspecified bronchus or lung

    • C34.31 - Malignant neoplasm of lower lobe, right bronchus or lung

    • C34.32 - Malignant neoplasm of lower lobe, left bronchus or lung

  • C34.8 - Malignant neoplasm of overlapping sites of bronchus and lung

    • C34.80 - Malignant neoplasm of overlapping sites of unspecified bronchus and lung

    • C34.81 - Malignant neoplasm of overlapping sites of right bronchus and lung

    • C34.82 - Malignant neoplasm of overlapping sites of left bronchus and lung

  • C34.9 - Malignant neoplasm of unspecified part of bronchus or lung

    • C34.90 - Malignant neoplasm of unspecified part of unspecified bronchus or lung

    • C34.91 - Malignant neoplasm of unspecified part of right bronchus or lung

    • C34.92 - Malignant neoplasm of unspecified part of left bronchus or lung

  • C38 - Malignant neoplasm of heart, mediastinum and pleura

    • C38.1 - Malignant neoplasm of anterior mediastinum

    • C38.2 - Malignant neoplasm of posterior mediastinum

    • C38.3 - Malignant neoplasm of mediastinum, part unspecified

    • C38.4 - Malignant neoplasm of pleura

    • C38.8 - Malignant neoplasm of overlapping sites of heart, mediastinum and pleura

  • C39 - Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs

    • C39.9 - Malignant neoplasm of lower respiratory tract, part unspecified

  • C45 - Mesothelioma

    • C45.0 - Mesothelioma of pleura

  • C46.5 - Kaposi's sarcoma of lung

    • C46.50 - Kaposi's sarcoma of unspecified lung

    • C46.51 - Kaposi's sarcoma of right lung

    • C46.52 - Kaposi's sarcoma of left lung

  • C76 - Malignant neoplasm of other and ill-defined sites

    • C76.1 - Malignant neoplasm of thorax

  • C78 - Secondary malignant neoplasm of respiratory and digestive organs

    • C78.1 - Secondary malignant neoplasm of mediastinum

    • C78.2 - Secondary malignant neoplasm of pleura

  • C78.0 - Secondary malignant neoplasm of lung

    • C78.00 - Secondary malignant neoplasm of unspecified lung

    • C78.01 - Secondary malignant neoplasm of right lung

    • C78.02 - Secondary malignant neoplasm of left lung

  • C78.3 - Secondary malignant neoplasm of other and unspecified respiratory organs

    • C78.30 - Secondary malignant neoplasm of unspecified respiratory organ

    • C78.39 - Secondary malignant neoplasm of other respiratory organs

  • C7A.09 - Malignant carcinoid tumors of other sites

    • C7A.090 - Malignant carcinoid tumor of the bronchus and lung

  • D02 - Carcinoma in situ of middle ear and respiratory system

    • D02.1 - Carcinoma in situ of trachea

    • D02.3 - Carcinoma in situ of other parts of respiratory system

    • D02.4 - Carcinoma in situ of respiratory system, unspecified

  • D02.2 - Carcinoma in situ of bronchus and lung

    • D02.20 - Carcinoma in situ of unspecified bronchus and lung

    • D02.21 - Carcinoma in situ of right bronchus and lung

    • D02.22 - Carcinoma in situ of left bronchus and lung

  • D14 - Benign neoplasm of middle ear and respiratory system

    • D14.2 - Benign neoplasm of trachea

    • D14.4 - Benign neoplasm of respiratory system, unspecified

  • D14.3 - Benign neoplasm of bronchus and lung

    • D14.30 - Benign neoplasm of unspecified bronchus and lung

    • D14.31 - Benign neoplasm of right bronchus and lung

    • D14.32 - Benign neoplasm of left bronchus and lung

  • D15 - Benign neoplasm of other and unspecified intrathoracic organs

    • D15.2 - Benign neoplasm of mediastinum

    • D15.7 - Benign neoplasm of other specified intrathoracic organs

    • D15.9 - Benign neoplasm of intrathoracic organ, unspecified

  • D16 - Benign neoplasm of bone and articular cartilage

    • D16.7 - Benign neoplasm of ribs, sternum and clavicle

  • D17 - Benign lipomatous neoplasm

    • D17.4 - Benign lipomatous neoplasm of intrathoracic organs

  • D19 - Benign neoplasm of mesothelial tissue

    • D19.0 - Benign neoplasm of mesothelial tissue of pleura

  • D38 - Neoplasm of uncertain behavior of middle ear and respiratory and intrathoracic organs

    • D38.1 - Neoplasm of uncertain behavior of trachea, bronchus and lung

    • D38.2 - Neoplasm of uncertain behavior of pleura

    • D38.3 - Neoplasm of uncertain behavior of mediastinum

    • D38.4 - Neoplasm of uncertain behavior of thymus

    • D38.5 - Neoplasm of uncertain behavior of other respiratory organs

    • D38.6 - Neoplasm of uncertain behavior of respiratory organ, unspecified

  • D3A.09 - Benign carcinoid tumors of other sites

    • D3A.090 - Benign carcinoid tumor of the bronchus and lung

  • D49 - Neoplasms of unspecified behavior

    • D49.1 - Neoplasm of unspecified behavior of respiratory system

  • J91 - Pleural effusion in conditions classified elsewhere

    • J91.0 - Malignant pleural effusion