136 MS-DRG: SINUS AND MASTOID PROCEDURES WITHOUT CC/MCC
MS-DRG 136 groups Medicare inpatient hospital stays for: SINUS AND MASTOID PROCEDURES WITHOUT CC/MCC. This is a surgical MS-DRG. It falls under MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat).
Payment & Classification Data
Official CMS values from the FY2027 IPPS Final Rule Table 5.
| Major Diagnostic Category | MDC 03 — Diseases and Disorders of the Ear, Nose, Mouth and Throat |
| DRG Type | Surgical |
| Severity Level | None |
| Relative Weight | 1.0619 |
| Relative Weight (10% Cap Applied) | 1.0619 |
| Geometric Mean Length of Stay | 1.3 days |
| Arithmetic Mean Length of Stay | 1.5 days |
| Post-Acute Transfer DRG | No |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
497 procedure codes appear in its surgical logic (Sinus and Mastoid Procedures: 497): 095B0ZZ, 095B3ZZ, 095B4ZZ, 095B8ZZ, 095C0ZZ, 095C3ZZ, 095C4ZZ, 095C8ZZ, 095P0ZZ, 095P3ZZ, 095P4ZZ, 095P8ZZ and 485 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 03, this DRG ranks 3 of 5 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 Head and Neck Procedures (DRGs 140-142)
- 2. Other Ear, Nose, Mouth and Throat O.R. Procedures (DRGs 143-145)
- 3. Sinus and Mastoid Procedures (DRGs 135-136) — this DRG
- 4. Mouth Procedures (DRGs 137-138)
- 5. Salivary Gland Procedures (DRGs 139)
From the CMS MS-DRG Definitions Manual, Appendix D. Actual DRG assignment depends on the complete claim.
Contextual Map
Every relationship of 136 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 03 — Diseases and Disorders of the Ear, Nose, Mouth and Throat[MDC]— CMS MS-DRG Definitions Manual · FY2027
Defining procedures (497)
- 095B0ZZ — Destruction of Right Mastoid Sinus, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 095B3ZZ — Destruction of Right Mastoid Sinus, Percutaneous Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 095B4ZZ — Destruction of Right Mastoid Sinus, Percutaneous Endoscopic Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 095B8ZZ — Destruction of Right Mastoid Sinus, Via Natural or Artificial Opening Endoscopic[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 095C0ZZ — Destruction of Left Mastoid Sinus, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 095C3ZZ — Destruction of Left Mastoid Sinus, Percutaneous Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 095C4ZZ — Destruction of Left Mastoid Sinus, Percutaneous Endoscopic Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 095C8ZZ — Destruction of Left Mastoid Sinus, Via Natural or Artificial Opening Endoscopic[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- and 489 more
DRG family
- DRG 135 — SINUS AND MASTOID PROCEDURES WITH CC/MCC[DRG family]: “SINUS AND MASTOID PROCEDURES WITH CC/MCC — same CMS DRG family (135-136), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 135-136) · 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 28, 2026 · All releases and sources