MS-DRG 290: ACUTE AND SUBACUTE ENDOCARDITIS WITHOUT CC/MCC
MS-DRG 290 is acute and subacute endocarditis without cc/mcc, in MDC 05 (a medical DRG), at the without-CC/MCC level. Its FY2027 relative weight is 0.8367, so a case here pays less than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 2.40 days. 5 ICD-10-CM principal diagnoses group into MS-DRGs 288–290 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 0.8367
- Geometric mean LOS
- 2.40
- Arithmetic mean LOS
- 3.00
- Post-acute transfer
- Yes
CMS caps year-over-year weight decreases at 10%. Before the cap this DRG weighs 0.7846; the capped weight above is the one used for payment. 41 DRGs differ this way in FY2027.
This DRG is subject to the post-acute care transfer policy: a discharge to a qualifying setting below the mean length of stay is paid per diem rather than in full.
Principal diagnoses that group to MS-DRGs 288–290
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 5 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 288–290 the case lands in. The 5 most-searched:
The severity splits
Same base DRG, split by whether a secondary diagnosis is a CC or MCC. The last column is the weight change from MS-DRG 290.
| 288 | ACUTE AND SUBACUTE ENDOCARDITIS WITH MCC | 2.6315 | +1.7948 |
| 289 | ACUTE AND SUBACUTE ENDOCARDITIS WITH CC | 1.5362 | +0.6995 |
| 290 | ACUTE AND SUBACUTE ENDOCARDITIS WITHOUT CC/MCC | 0.8367 |
All FY2027 MS-DRGs · MDC 05