MS-DRG v44.0 · MDC 04: Diseases and Disorders of the Respiratory System
180 — Respiratory Neoplasms with MCC
- Relative weight
- 1.7806
- Geometric mean LOS
- 4.7 days
- Arithmetic mean LOS
- 6.4 days
- Type
- Medical
About MS-DRG 180
MS-DRG 180, Respiratory Neoplasms with MCC, is a medical DRG in MDC 04 (Diseases and Disorders of the Respiratory System) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.
Its FY2027 relative weight is 1.7806, so Medicare's base payment for this DRG is about 1.78 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 4.7 days and the arithmetic mean is 6.4 days.
It belongs to a 3-level severity family: DRG 180 (with MCC, weight 1.7806), DRG 181 (with CC, weight 1.0936) and DRG 182 (without CC/MCC, weight 0.7439). The highest-severity level carries 2.4 times the weight of the lowest, which is why documenting CC and MCC conditions matters.
64 ICD-10-CM diagnosis codes are part of this DRG's grouping logic; they are listed below.
ICD-10-CM codes that group to DRG 180 (64)
Chapter 2: Neoplasms
- C33Malignant neoplasm of trachea
- C34.00Malignant neoplasm of unspecified main bronchus
- C34.01Malignant neoplasm of right main bronchus
- C34.02Malignant neoplasm of left main bronchus
- C34.10Malignant neoplasm of upper lobe, unspecified bronchus or lung
- C34.11Malignant neoplasm of upper lobe, right bronchus or lung
- C34.12Malignant neoplasm of upper lobe, left bronchus or lung
- C34.2Malignant neoplasm of middle lobe, bronchus or lung
- C34.30Malignant neoplasm of lower lobe, unspecified bronchus or lung
- C34.31Malignant neoplasm of lower lobe, right bronchus or lung
- C34.32Malignant neoplasm of lower lobe, left bronchus or lung
- C34.80Malignant neoplasm of overlapping sites of unspecified bronchus and lung
- C34.81Malignant neoplasm of overlapping sites of right bronchus and lung
- C34.82Malignant neoplasm of overlapping sites of left bronchus and lung
- C34.90Malignant neoplasm of unspecified part of unspecified bronchus or lung
- C34.91Malignant neoplasm of unspecified part of right bronchus or lung
- C34.92Malignant neoplasm of unspecified part of left bronchus or lung
- C38.1Malignant neoplasm of anterior mediastinum
- C38.2Malignant neoplasm of posterior mediastinum
- C38.3Malignant neoplasm of mediastinum, part unspecified
- C38.4Malignant neoplasm of pleura
- C38.8Malignant neoplasm of overlapping sites of heart, mediastinum and pleura
- C39.9Malignant neoplasm of lower respiratory tract, part unspecified
- C45.0Mesothelioma of pleura
- C46.50Kaposi's sarcoma of unspecified lung
- C46.51Kaposi's sarcoma of right lung
- C46.52Kaposi's sarcoma of left lung
- C76.1Malignant neoplasm of thorax
- C78.00Secondary malignant neoplasm of unspecified lung
- C78.01Secondary malignant neoplasm of right lung
- C78.02Secondary malignant neoplasm of left lung
- C78.1Secondary malignant neoplasm of mediastinum
- C78.2Secondary malignant neoplasm of pleura
- C78.30Secondary malignant neoplasm of unspecified respiratory organ
- C78.31Secondary malignant neoplasm of larynx
- C78.32Secondary malignant neoplasm of pharynx
- C78.39Secondary malignant neoplasm of other respiratory organs
- C7A.090Malignant carcinoid tumor of the bronchus and lung
- D02.1Carcinoma in situ of trachea
- D02.20Carcinoma in situ of unspecified bronchus and lung
- D02.21Carcinoma in situ of right bronchus and lung
- D02.22Carcinoma in situ of left bronchus and lung
- D02.3Carcinoma in situ of other parts of respiratory system
- D02.4Carcinoma in situ of respiratory system, unspecified
- D14.2Benign neoplasm of trachea
- D14.30Benign neoplasm of unspecified bronchus and lung
- D14.31Benign neoplasm of right bronchus and lung
- D14.32Benign neoplasm of left bronchus and lung
- D14.4Benign neoplasm of respiratory system, unspecified
- D15.2Benign neoplasm of mediastinum
- D15.7Benign neoplasm of other specified intrathoracic organs
- D15.9Benign neoplasm of intrathoracic organ, unspecified
- D16.7Benign neoplasm of ribs, sternum and clavicle
- D17.4Benign lipomatous neoplasm of intrathoracic organs
- D19.0Benign neoplasm of mesothelial tissue of pleura
- D38.1Neoplasm of uncertain behavior of trachea, bronchus and lung
- D38.2Neoplasm of uncertain behavior of pleura
- D38.3Neoplasm of uncertain behavior of mediastinum
- D38.4Neoplasm of uncertain behavior of thymus
- D38.5Neoplasm of uncertain behavior of other respiratory organs
- D38.6Neoplasm of uncertain behavior of respiratory organ, unspecified
- D3A.090Benign carcinoid tumor of the bronchus and lung
- D49.1Neoplasm of unspecified behavior of respiratory system
Chapter 10: Diseases of the respiratory system
Common questions about DRG 180
What is the relative weight of DRG 180?
- 1.7806 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 180?
- The geometric mean length of stay is 4.7 days; the arithmetic mean is 6.4 days.
Is DRG 180 medical or surgical?
- DRG 180 is a medical DRG.