MS-DRG v44.0 · MDC 05: Diseases and Disorders of the Circulatory System
307 — Cardiac Congenital and Valvular Disorders without MCC
Source: CMS MS-DRG v44.0 and FY2027 IPPS final rule. Page updated September 29, 2026.
- Relative weight
- 0.9148
- Geometric mean LOS
- 2.1 days
- Arithmetic mean LOS
- 2.7 days
- Type
- Medical
About MS-DRG 307
MS-DRG 307, Cardiac Congenital and Valvular Disorders without MCC, is a medical DRG in MDC 05 (Diseases and Disorders of the Circulatory System) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.
Its FY2027 relative weight is 0.9148, so Medicare's base payment for this DRG is about 0.91 times the average inpatient case (below average), before hospital-specific adjustments. The geometric mean length of stay is 2.1 days and the arithmetic mean is 2.7 days.
It belongs to a 2-level severity family: DRG 306 (with MCC, weight 1.546) and DRG 307 (without MCC, weight 0.9148). The highest-severity level carries 1.7 times the weight of the lowest, which is why documenting CC and MCC conditions matters.
146 ICD-10-CM diagnosis codes are part of this DRG's grouping logic; they are listed below.
ICD-10-CM codes that group to DRG 307 (146)
Chapter 1: Certain infectious and parasitic diseases
Chapter 9: Diseases of the circulatory system
- I01.1Acute rheumatic endocarditis
- I05.0Rheumatic mitral stenosis
- I05.1Rheumatic mitral insufficiency
- I05.2Rheumatic mitral stenosis with insufficiency
- I05.8Other rheumatic mitral valve diseases
- I05.9Rheumatic mitral valve disease, unspecified
- I06.0Rheumatic aortic stenosis
- I06.1Rheumatic aortic insufficiency
- I06.2Rheumatic aortic stenosis with insufficiency
- I06.8Other rheumatic aortic valve diseases
- I06.9Rheumatic aortic valve disease, unspecified
- I07.0Rheumatic tricuspid stenosis
- I07.1Rheumatic tricuspid insufficiency
- I07.2Rheumatic tricuspid stenosis and insufficiency
- I07.8Other rheumatic tricuspid valve diseases
- I07.9Rheumatic tricuspid valve disease, unspecified
- I08.0Rheumatic disorders of both mitral and aortic valves
- I08.1Rheumatic disorders of both mitral and tricuspid valves
- I08.2Rheumatic disorders of both aortic and tricuspid valves
- I08.3Combined rheumatic disorders of mitral, aortic and tricuspid valves
- I08.8Other rheumatic multiple valve diseases
- I08.9Rheumatic multiple valve disease, unspecified
- I09.1Rheumatic diseases of endocardium, valve unspecified
- I09.89Other specified rheumatic heart diseases
- I23.4Rupture of chordae tendineae as current complication following acute myocardial infarction
- I23.5Rupture of papillary muscle as current complication following acute myocardial infarction
- I34.0Nonrheumatic mitral (valve) insufficiency
- I34.1Nonrheumatic mitral (valve) prolapse
- I34.2Nonrheumatic mitral (valve) stenosis
- I34.81Nonrheumatic mitral (valve) annulus calcification
- I34.89Other nonrheumatic mitral valve disorders
- I34.9Nonrheumatic mitral valve disorder, unspecified
- I35.0Nonrheumatic aortic (valve) stenosis
- I35.1Nonrheumatic aortic (valve) insufficiency
- I35.2Nonrheumatic aortic (valve) stenosis with insufficiency
- I35.8Other nonrheumatic aortic valve disorders
- I35.9Nonrheumatic aortic valve disorder, unspecified
- I36.0Nonrheumatic tricuspid (valve) stenosis
- I36.1Nonrheumatic tricuspid (valve) insufficiency
- I36.2Nonrheumatic tricuspid (valve) stenosis with insufficiency
- I36.8Other nonrheumatic tricuspid valve disorders
- I36.9Nonrheumatic tricuspid valve disorder, unspecified
- I37.0Nonrheumatic pulmonary valve stenosis
- I37.1Nonrheumatic pulmonary valve insufficiency
- I37.2Nonrheumatic pulmonary valve stenosis with insufficiency
- I37.8Other nonrheumatic pulmonary valve disorders
- I37.9Nonrheumatic pulmonary valve disorder, unspecified
- I38Endocarditis, valve unspecified
- I39Endocarditis and heart valve disorders in diseases classified elsewhere
- I51.1Rupture of chordae tendineae, not elsewhere classified
- I51.2Rupture of papillary muscle, not elsewhere classified
Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Q20.0Common arterial trunk
- Q20.1Double outlet right ventricle
- Q20.2Double outlet left ventricle
- Q20.3Discordant ventriculoarterial connection
- Q20.4Double inlet ventricle
- Q20.5Discordant atrioventricular connection
- Q20.6Isomerism of atrial appendages
- Q20.8Other congenital malformations of cardiac chambers and connections
- Q20.9Congenital malformation of cardiac chambers and connections, unspecified
- Q21.0Ventricular septal defect
- Q21.10Atrial septal defect, unspecified
- Q21.11Secundum atrial septal defect
- Q21.12Patent foramen ovale
- Q21.13Coronary sinus atrial septal defect
- Q21.14Superior sinus venosus atrial septal defect
- Q21.15Inferior sinus venosus atrial septal defect
- Q21.16Sinus venosus atrial septal defect, unspecified
- Q21.19Other specified atrial septal defect
- Q21.20Atrioventricular septal defect, unspecified as to partial or complete
- Q21.21Partial atrioventricular septal defect
- Q21.22Transitional atrioventricular septal defect
- Q21.23Complete atrioventricular septal defect
- Q21.3Tetralogy of Fallot
- Q21.4Aortopulmonary septal defect
- Q21.8Other congenital malformations of cardiac septa
- Q21.9Congenital malformation of cardiac septum, unspecified
- Q22.0Pulmonary valve atresia
- Q22.1Congenital pulmonary valve stenosis
- Q22.2Congenital pulmonary valve insufficiency
- Q22.3Other congenital malformations of pulmonary valve
- Q22.4Congenital tricuspid stenosis
- Q22.5Ebstein's anomaly
- Q22.6Hypoplastic right heart syndrome
- Q22.8Other congenital malformations of tricuspid valve
- Q22.9Congenital malformation of tricuspid valve, unspecified
- Q23.0Congenital stenosis of aortic valve
- Q23.1Congenital insufficiency of aortic valve
- Q23.2Congenital mitral stenosis
- Q23.3Congenital mitral insufficiency
- Q23.4Hypoplastic left heart syndrome
- Q23.81Bicuspid aortic valve
- Q23.82Congenital mitral valve cleft leaflet
- Q23.88Other congenital malformations of aortic and mitral valves
- Q23.9Congenital malformation of aortic and mitral valves, unspecified
- Q24.0Dextrocardia
- Q24.1Levocardia
- Q24.2Cor triatriatum
- Q24.3Pulmonary infundibular stenosis
- Q24.4Congenital subaortic stenosis
- Q24.5Malformation of coronary vessels
- Q24.8Other specified congenital malformations of heart
- Q24.9Congenital malformation of heart, unspecified
- Q25.0Patent ductus arteriosus
- Q25.1Coarctation of aorta
- Q25.21Interruption of aortic arch
- Q25.29Other atresia of aorta
- Q25.3Supravalvular aortic stenosis
- Q25.40Congenital malformation of aorta unspecified
- Q25.41Absence and aplasia of aorta
- Q25.42Hypoplasia of aorta
- Q25.43Congenital aneurysm of aorta
- Q25.44Congenital dilation of aorta
- Q25.45Double aortic arch
- Q25.46Tortuous aortic arch
- Q25.47Right aortic arch
- Q25.48Anomalous origin of subclavian artery
- Q25.49Other congenital malformations of aorta
- Q25.5Atresia of pulmonary artery
- Q25.6Stenosis of pulmonary artery
- Q25.71Coarctation of pulmonary artery
- Q25.72Congenital pulmonary arteriovenous malformation
- Q25.79Other congenital malformations of pulmonary artery
- Q25.8Other congenital malformations of other great arteries
- Q25.9Congenital malformation of great arteries, unspecified
- Q26.0Congenital stenosis of vena cava
- Q26.1Persistent left superior vena cava
- Q26.2Total anomalous pulmonary venous connection
- Q26.3Partial anomalous pulmonary venous connection
- Q26.4Anomalous pulmonary venous connection, unspecified
- Q26.8Other congenital malformations of great veins
- Q26.9Congenital malformation of great vein, unspecified
- Q87.40Marfan syndrome, unspecified
- Q87.410Marfan syndrome with aortic dilation
- Q87.418Marfan syndrome with other cardiovascular manifestations
- Q87.42Marfan syndrome with ocular manifestations
- Q87.43Marfan syndrome with skeletal manifestation
Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
Chapter 19: Injury, poisoning and certain other consequences of external causes
Common questions about DRG 307
What is the relative weight of DRG 307?
- 0.9148 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 307?
- The geometric mean length of stay is 2.1 days; the arithmetic mean is 2.7 days.
Is DRG 307 medical or surgical?
- DRG 307 is a medical DRG.