831 — Other Antepartum Diagnoses without O.R. Procedures with MCC

MS-DRG 831, Other Antepartum Diagnoses without O.R. Procedures with MCC, is a medical DRG in MDC 14 (Pregnancy, Childbirth and the Puerperium) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.

Its FY2027 relative weight is 1.1558, so Medicare's base payment for this DRG is about 1.16 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 3.4 days and the arithmetic mean is 4.8 days.

It belongs to a 3-level severity family: DRG 831 (with MCC, weight 1.1558), DRG 832 (with CC, weight 0.7585) and DRG 833 (without CC/MCC, weight 0.5002). The highest-severity level carries 2.3 times the weight of the lowest, which is why documenting CC and MCC conditions matters.

1,964 ICD-10-CM diagnosis codes are part of this DRG's grouping logic; they are listed below.