191 MS-DRG: CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH CC
MS-DRG 191 groups Medicare inpatient hospital stays for: CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH CC. This is a medical MS-DRG. It falls under MDC 04 (Diseases and Disorders of the Respiratory System).
Payment & Classification Data
Official CMS values from the FY2027 IPPS Final Rule Table 5.
| Major Diagnostic Category | MDC 04 — Diseases and Disorders of the Respiratory System |
| DRG Type | Medical |
| Severity Level | CC |
| Relative Weight | 0.8261 |
| Relative Weight (10% Cap Applied) | 0.8261 |
| Geometric Mean Length of Stay | 2.6 days |
| Arithmetic Mean Length of Stay | 3.2 days |
| Post-Acute Transfer DRG | Yes |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
23 diagnosis codes can drive assignment here: J41.1, J41.8, J42, J43.0, J43.1, J43.2, J43.8, J43.9, J44.0, J44.1, J44.81, J44.89 and 11 more.
From the CMS MS-DRG Definitions Manual (Appendices B and E). Assignment also depends on severity, discharge status and the rest of the claim.
Contextual Map
Every relationship of 191 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Major Diagnostic Category
- MDC 04 — Diseases and Disorders of the Respiratory System[MDC]— CMS MS-DRG Definitions Manual · FY2027
Defining diagnoses (23)
- J41.1 — Mucopurulent chronic bronchitis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- J41.8 — Mixed simple and mucopurulent chronic bronchitis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- J42 — Unspecified chronic bronchitis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- J43.0 — Unilateral pulmonary emphysema [MacLeod's syndrome][Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- J43.1 — Panlobular emphysema[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- J43.2 — Centrilobular emphysema[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- J43.8 — Other emphysema[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- J43.9 — Emphysema, unspecified[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- and 15 more
DRG family
- DRG 190 — CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH MCC[DRG family]: “CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH MCC — same CMS DRG family (190-192), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 190-192) · FY2027
- DRG 192 — CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITHOUT CC/MCC[DRG family]: “CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITHOUT CC/MCC — same CMS DRG family (190-192), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 190-192) · FY2027
Read from: CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44. All data sources · How to read the labels · How MedCoder verifies its implementation
Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources