831 MS-DRG: OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH MCC
MS-DRG 831 groups Medicare inpatient hospital stays for: OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH MCC. This is a medical MS-DRG. It falls under MDC 14 (Pregnancy, Childbirth and the Puerperium).
Payment & Classification Data
Official CMS values from the FY2027 IPPS Final Rule Table 5.
| Major Diagnostic Category | MDC 14 — Pregnancy, Childbirth and the Puerperium |
| DRG Type | Medical |
| Severity Level | MCC |
| Relative Weight | 1.1558 |
| Relative Weight (10% Cap Applied) | 1.1558 |
| Geometric Mean Length of Stay | 3.4 days |
| Arithmetic Mean Length of Stay | 4.8 days |
| Post-Acute Transfer DRG | No |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
1,964 diagnosis codes can drive assignment here: O00.00, O00.01, O00.101, O00.102, O00.109, O00.111, O00.112, O00.119, O00.121, O00.122, O00.129, O00.131 and 1,952 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 831 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 14 — Pregnancy, Childbirth and the Puerperium[MDC]— CMS MS-DRG Definitions Manual · FY2027
Defining diagnoses (1964)
- O00.00 — Abdominal pregnancy without intrauterine pregnancy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- O00.01 — Abdominal pregnancy with intrauterine pregnancy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- O00.101 — Right tubal pregnancy without intrauterine pregnancy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- O00.102 — Left tubal pregnancy without intrauterine pregnancy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- O00.109 — Unspecified tubal pregnancy without intrauterine pregnancy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- O00.111 — Right tubal pregnancy with intrauterine pregnancy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- O00.112 — Left tubal pregnancy with intrauterine pregnancy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- O00.119 — Unspecified tubal pregnancy with intrauterine pregnancy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- and 1956 more
DRG family
- DRG 832 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH CC[DRG family]: “OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITH CC — same CMS DRG family (831-833), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 831-833) · FY2027
- DRG 833 — OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITHOUT CC/MCC[DRG family]: “OTHER ANTEPARTUM DIAGNOSES WITHOUT O.R. PROCEDURES WITHOUT CC/MCC — same CMS DRG family (831-833), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 831-833) · 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