MS-DRGs in MDC 19
Weights in this category range from 0.8960 (DRG 881) to 3.6800 (DRG 876); the change column compares FY2027 with FY2026.
| DRG | Title | Type | Weight | GMLOS | Change |
|---|---|---|---|---|---|
| 876 | O.R. Procedures with Principal Diagnosis of Mental Illness | Surgical | 3.6800 | 6.7 | -4.8% |
| 880 | Acute Adjustment Reaction and Psychosocial Dysfunction | Medical | 0.9310 | 2.7 | -3.0% |
| 881 | Depressive Neuroses | Medical | 0.8960 | 4.1 | -4.8% |
| 882 | Neuroses Except Depressive | Medical | 0.9950 | 3.5 | -7.4% |
| 883 | Disorders of Personality and Impulse Control | Medical | 1.7700 | 5.4 | -10.0% |
| 884 | Organic Disturbances and Intellectual Disability | Medical | 1.6000 | 4.6 | -0.6% |
| 885 | Psychoses | Medical | 1.3900 | 6.5 | -0.5% |
| 886 | Behavioral and Developmental Disorders | Medical | 1.8680 | 5.1 | -10.0% |
| 887 | Other Mental Disorder Diagnoses | Medical | 1.1150 | 3.1 | +4.1% |
How to read this table
The relative weight is the payment multiplier CMS applies to a hospital's wage-adjusted standardized amount; a weight of 2.0 pays roughly twice an average inpatient case before outliers and add-ons. Geometric mean length of stay is the figure used in post-acute transfer calculations, so stays shorter than it in a transfer DRG are paid per diem. The change column compares the FY2027 final weight with FY2026; moves larger than two percent usually come from code reassignments in the final rule's Table 6 series or from updated cost data, and are worth re-checking in contract models and budgets before October 1. Surgical DRGs require a qualifying operating-room procedure; medical DRGs are reached when no such procedure is coded.
Frequently asked questions
How many MS-DRGs are in MDC 19?
9 MS-DRGs are assigned to MDC 19 (Assignment of Diagnosis Codes) in the FY2027 v44 grouper: 1 surgical and 8 medical.
Which MDC 19 DRG has the highest weight?
DRG 876, O.R. Procedures with Principal Diagnosis of Mental Illness, carries the highest FY2027 relative weight in this category at 3.6800; the lowest is DRG 881 at 0.8960.
How is a stay assigned to this MDC?
The grouper maps the principal diagnosis to MDC 19, then checks for a qualifying operating-room procedure to choose between the surgical and medical DRG partitions, and finally applies CC/MCC severity splits.
Sources
Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-01. Verify against the primary file before billing or contracting decisions.
- IPPS FY2027 Final Rule Table 5 (CMS-1849-F)Version v44 FY2027 · effective 2026-10-01 · file CMS-1849-F Table 5.txtSHA-256 01003dd571c1e2f5…
- IPPS FY2026 Final Rule Table 5 (CMS-1833-F)Version v43 FY2026 · effective 2025-10-01 · file CMS-1833-F Table 5.txtSHA-256 bf8c390d14b3cd3e…
Disclaimer
Operational reference compiled from CMS publications. Relative weights are national factors; actual payment depends on hospital-specific rates and adjustments. Not legal, clinical or billing advice.