MS-DRG 190 – Chronic Obstructive Pulmonary Disease with MCC
A Medical DRG in MDC 04 (Diseases & Disorders of the Respiratory System). Inpatient cases group to DRG 190 when the ICD-10-CM principal diagnosis is one of the 23 codes listed below and a secondary diagnosis on the major complication or comorbidity (MCC) list is present. Its FY 2026 relative weight is 1.1077 with a geometric mean length of stay of 3.3 days.
Severity family
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), then applies the severity split from secondary diagnoses: with MCC → 190; with CC → 191; without CC/MCC → 192.
Principal Diagnosis Codes 23 codes · 8 categories
J41 Simple and mucopurulent chronic bronchitis2 codes
J42 Unspecified chronic bronchitis1 code
- J42 Unspecified chronic bronchitis
J43 Emphysema5 codes
J44 Other chronic obstructive pulmonary disease5 codes
- J44.0 Chronic obstructive pulmonary disease with (acute) lower respiratory infection
- J44.1 Chronic obstructive pulmonary disease with (acute) exacerbation
- J44.81 Bronchiolitis obliterans and bronchiolitis obliterans syndrome
- J44.89 Other specified chronic obstructive pulmonary disease
- J44.9 Chronic obstructive pulmonary disease, unspecified
J47 Bronchiectasis3 codes
J4A Chronic lung allograft dysfunction3 codes
J68 Respiratory conditions due to inhalation of chemicals, gases, fumes and vapors3 codes
Q33 Congenital malformations of lung1 code
- Q33.4 Congenital bronchiectasis
Procedure Codes
Frequently Asked Questions
What is MS-DRG 190?
MS-DRG 190 (Chronic Obstructive Pulmonary Disease with MCC) is a medical DRG in MDC 04 (Diseases & Disorders of the Respiratory System). Its FY 2026 relative weight is 1.1077 with a geometric mean length of stay of 3.3 days.
What is the difference between DRG 190, 191, 192?
All 3 share the same base category; the severity of secondary diagnoses separates them: 190 (with MCC), 191 (with CC), 192 (without CC/MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.
How many diagnosis codes group to DRG 190?
23 ICD-10-CM principal diagnosis codes group to this DRG, spanning 8 three-character categories.
What is the relative weight of DRG 190?
The FY 2026 relative weight of this DRG is 1.1077, meaning reimbursement of roughly 1.11 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
