791 MS-DRG: PREMATURITY WITH MAJOR PROBLEMS
MS-DRG 791 groups Medicare inpatient hospital stays for: PREMATURITY WITH MAJOR PROBLEMS. This is a medical MS-DRG. It falls under MDC 15 (Newborns and Other Neonates with Conditions Originating in Perinatal Period).
Payment & Classification Data
Official CMS values from the current fiscal year's IPPS Final Rule.
| Major Diagnostic Category | MDC 15 — Newborns and Other Neonates with Conditions Originating in Perinatal Period |
| DRG Type | Medical |
| Severity Level | N/A |
| Relative Weight | 4.059 |
| Relative Weight (10% Cap Applied) | 4.059 |
| Geometric Mean Length of Stay | 13.3 days |
| Arithmetic Mean Length of Stay | 13.3 days |
| Post-Acute Transfer DRG | No |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
2,244 diagnosis codes can drive assignment here: A35, A39.1, A39.50, A39.51, A39.52, A39.53, A39.82, A39.83, A39.84, A40.9, A41.01, A41.02 and 2,232 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 791 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 15 — Newborns and Other Neonates with Conditions Originating in Perinatal Period[MDC]— CMS MS-DRG Definitions Manual · FY2027
Defining diagnoses (2244)
- A35 — Other tetanus[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- A39.1 — Waterhouse-Friderichsen syndrome[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- A39.50 — Meningococcal carditis, unspecified[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- A39.51 — Meningococcal endocarditis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- A39.52 — Meningococcal myocarditis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- A39.53 — Meningococcal pericarditis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- A39.82 — Meningococcal retrobulbar neuritis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- A39.83 — Meningococcal arthritis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- and 2236 more
DRG family
- DRG 792 — PREMATURITY WITHOUT MAJOR PROBLEMS[DRG family]: “PREMATURITY WITHOUT MAJOR PROBLEMS — same CMS DRG family (791-792), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 791-792) · 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