MS-DRG · FY 2026 v43.0

MS-DRG 204 – Respiratory Signs and Symptoms

A Medical DRG in MDC 04 (Diseases & Disorders of the Respiratory System). Inpatient cases group to DRG 204 when the ICD-10-CM principal diagnosis is one of the 30 codes listed below. Its FY 2026 relative weight is 0.8074 with a geometric mean length of stay of 2.1 days.

Medical DRG – assigned by principal diagnosis✓ Official CMS v43.0 dataset

0.8074

Relative Weight

2.1

Geometric Mean LOS (days)

2.7

Arithmetic Mean LOS (days)

Principal Diagnosis Codes

How a case is assigned to DRG 204

The grouper first assigns the case to MDC 04 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here).

ICD-10-CM

Principal Diagnosis Codes 30 codes · 7 categories

30 of 30 shown

G47 Sleep disorders1 code

G47.32 High altitude periodic breathing

R04 Hemorrhage from respiratory passages4 codes

R04.2 Hemoptysis
R04.81 Acute idiopathic pulmonary hemorrhage in infants
R04.89 Hemorrhage from other sites in respiratory passages
R04.9 Hemorrhage from respiratory passages, unspecified

R05 Cough6 codes

R05.1 Acute cough
R05.2 Subacute cough
R05.3 Chronic cough
R05.4 Cough syncope
R05.8 Other specified cough
R05.9 Cough, unspecified

R06 Abnormalities of breathing15 codes

R06.00 Dyspnea, unspecified
R06.01 Orthopnea
R06.02 Shortness of breath
R06.03 Acute respiratory distress
R06.09 Other forms of dyspnea
R06.1 Stridor
R06.2 Wheezing
R06.3 Periodic breathing
R06.4 Hyperventilation
R06.6 Hiccough
R06.81 Apnea, not elsewhere classified
R06.82 Tachypnea, not elsewhere classified
R06.83 Snoring
R06.89 Other abnormalities of breathing
R06.9 Unspecified abnormalities of breathing

R07 Pain in throat and chest2 codes

R07.1 Chest pain on breathing
R07.81 Pleurodynia

R09 Other symptoms and signs involving the circulatory and respiratory system1 code

R09.3 Abnormal sputum

R91 Abnormal findings on diagnostic imaging of lung1 code

R91.8 Other nonspecific abnormal finding of lung field

ICD-10-PCS

Procedure Codes

Procedure codes do not drive assignment for this DRG. DRG 204 is a Medical DRG, assigned from the principal diagnosis above.

Frequently Asked Questions

What is MS-DRG 204?

MS-DRG 204 (Respiratory Signs and Symptoms) is a medical DRG in MDC 04 (Diseases & Disorders of the Respiratory System). Its FY 2026 relative weight is 0.8074 with a geometric mean length of stay of 2.1 days.

How many diagnosis codes group to DRG 204?

30 ICD-10-CM principal diagnosis codes group to this DRG, spanning 7 three-character categories.

What is the relative weight of DRG 204?

The FY 2026 relative weight of this DRG is 0.8074, meaning reimbursement of roughly 0.81 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.

← PreviousDRG 203 – Bronchitis and Asthma without CC/MCC Next →DRG 205 – Other Respiratory System Diagnoses with MCC

Source: CMS ICD-10 MS-DRG v43.0 Definitions Manual and the FY 2026 IPPS Final Rule (Table 5), effective October 1, 2025 through September 30, 2026. We publish the DRG assignments as CMS defines them and add the navigation, search, and code links.