167 MS-DRG: OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH CC
MS-DRG 167 groups Medicare inpatient hospital stays for: OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH CC. This is a surgical 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 | Surgical |
| Severity Level | CC |
| Relative Weight | 1.8244 |
| Relative Weight (10% Cap Applied) | 1.8244 |
| Geometric Mean Length of Stay | 3.3 days |
| Arithmetic Mean Length of Stay | 4.5 days |
| Post-Acute Transfer DRG | Yes |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
1,996 procedure codes appear in its surgical logic (Other Respiratory System O.R. Procedures: 1,996): 008Q0ZZ, 008Q3ZZ, 008Q4ZZ, 021P08A, 021P08B, 021P08D, 021P09A, 021P09B, 021P09D, 021P0AA, 021P0AB, 021P0AD and 1,984 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.
Surgical Precedence (FY2027)
Within MDC 04, this DRG ranks 3 of 3 in CMS's surgical-class precedence order. When a claim qualifies for more than one surgical DRG in this MDC, the highest-ranked class applies.
- 1. Major Chest Procedures (DRGs 163-165)
- 2. Ultrasound Accelerated and Other Thrombolysis with Principal Diagnosis Pulmonary Embolism (DRGs 173)
- 3. Other Respiratory System O.R. Procedures (DRGs 166-168) — this DRG
From the CMS MS-DRG Definitions Manual, Appendix D. Actual DRG assignment depends on the complete claim.
Contextual Map
Every relationship of 167 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 procedures (1996)
- 008Q0ZZ — Division of Vagus Nerve, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 008Q3ZZ — Division of Vagus Nerve, Percutaneous Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 008Q4ZZ — Division of Vagus Nerve, Percutaneous Endoscopic Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 021P08A — Bypass Pulmonary Trunk from Innominate Artery with Zooplastic Tissue, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 021P08B — Bypass Pulmonary Trunk from Subclavian with Zooplastic Tissue, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 021P08D — Bypass Pulmonary Trunk from Carotid with Zooplastic Tissue, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 021P09A — Bypass Pulmonary Trunk from Innominate Artery with Autologous Venous Tissue, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 021P09B — Bypass Pulmonary Trunk from Subclavian with Autologous Venous Tissue, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- and 1988 more
DRG family
- DRG 166 — OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH MCC[DRG family]: “OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH MCC — same CMS DRG family (166-168), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 166-168) · FY2027
- DRG 168 — OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITHOUT CC/MCC[DRG family]: “OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITHOUT CC/MCC — same CMS DRG family (166-168), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 166-168) · 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