MS-DRG 306: CARDIAC CONGENITAL AND VALVULAR DISORDERS WITH MCC
MS-DRG 306 is cardiac congenital and valvular disorders with mcc, in MDC 05 (a medical DRG), at the with-MCC (major complication or comorbidity) level. Its FY2027 relative weight is 1.5460, so a case here pays more than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 3.80 days. 146 ICD-10-CM principal diagnoses group into MS-DRGs 306–307 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 1.5460
- Geometric mean LOS
- 3.80
- Arithmetic mean LOS
- 5.20
- Post-acute transfer
- No
Principal diagnoses that group to MS-DRGs 306–307
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 146 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 306–307 the case lands in. The 24 most-searched:
- I35.0Nonrheumatic aortic (valve) stenosis
- I34.0Nonrheumatic mitral (valve) insufficiency
- I35.1Nonrheumatic aortic (valve) insufficiency
- I38Endocarditis, valve unspecified
- R01.1Cardiac murmur, unspecified
- I08.1Rheumatic disorders of both mitral and tricuspid valves
- I34.1Nonrheumatic mitral (valve) prolapse
- Q21.12Patent foramen ovale
- I07.1Rheumatic tricuspid insufficiency
- I36.1Nonrheumatic tricuspid (valve) insufficiency
- Q21.0Ventricular septal defect
- Q23.81Bicuspid aortic valve
- Q24.9Congenital malformation of heart, unspecified
- I08.0Rheumatic disorders of both mitral and aortic valves
- I08.3Combined rheumatic disorders of mitral, aortic and tricuspid valves
- I35.8Other nonrheumatic aortic valve disorders
- I35.9Nonrheumatic aortic valve disorder, unspecified
- Q21.10Atrial septal defect, unspecified
- Q21.3Tetralogy of Fallot
- Q25.0Patent ductus arteriosus
- I05.0Rheumatic mitral stenosis
- I05.9Rheumatic mitral valve disease, unspecified
- I35.2Nonrheumatic aortic (valve) stenosis with insufficiency
- Q23.1Congenital insufficiency of aortic valve
122 more codes group here. Open any code above for its full hierarchy, or check a whole claim in the free DRG calculator.
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 306.
| 306 | CARDIAC CONGENITAL AND VALVULAR DISORDERS WITH MCC | 1.5460 | |
| 307 | CARDIAC CONGENITAL AND VALVULAR DISORDERS WITHOUT MCC | 0.9148 | -0.6312 |
All FY2027 MS-DRGs · MDC 05