MS-DRG · FY 2026 v43.0
MS-DRG 315 – Other Circulatory System Diagnoses with CC
A Medical DRG in MDC 05 (Diseases & Disorders of the Circulatory System). Inpatient cases group to DRG 315 when the ICD-10-CM principal diagnosis is one of the 257 codes listed below and a secondary diagnosis on the complication or comorbidity (CC) list is present. Its FY 2026 relative weight is 0.9633 with a geometric mean length of stay of 2.6 days.
Medical DRG – assigned by principal diagnosis✓ Official CMS v43.0 dataset
0.9633
Relative Weight
2.6
Geometric Mean LOS (days)
3.4
Arithmetic Mean LOS (days)
257
Principal Diagnosis Codes
Severity family
DRG 314with MCCWeight 2.0852 · GMLOS 4.8 daysDRG 315with CCWeight 0.9633 · GMLOS 2.6 daysDRG 316without CC/MCCWeight 0.6821 · GMLOS 1.8 days
How a case is assigned to DRG 315
The grouper first assigns the case to MDC 05 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here), then applies the severity split from secondary diagnoses: with MCC → 314; with CC → 315; without CC/MCC → 316.
ICD-10-CM
Principal Diagnosis Codes 257 codes · 43 categories
257 of 257 shown
A36 Diphtheria1 code
- A36.81 Diphtheritic cardiomyopathy
A39 Meningococcal infection3 codes
A52 Late syphilis5 codes
A54 Gonococcal infection1 code
- A54.83 Gonococcal heart infection
B33 Other viral diseases, not elsewhere classified4 codes
B57 Chagas' disease2 codes
B58 Toxoplasmosis1 code
- B58.81 Toxoplasma myocarditis
C38 Malignant neoplasm of heart, mediastinum and pleura1 code
- C38.0 Malignant neoplasm of heart
C45 Mesothelioma1 code
- C45.2 Mesothelioma of pericardium
D15 Benign neoplasm of other and unspecified intrathoracic organs1 code
- D15.1 Benign neoplasm of heart
D18 Hemangioma and lymphangioma, any site2 codes
I01 Rheumatic fever with heart involvement4 codes
I02 Rheumatic chorea2 codes
I09 Other rheumatic heart diseases3 codes
I23 Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)7 codes
- I23.0 Hemopericardium as current complication following acute myocardial infarction
- I23.1 Atrial septal defect as current complication following acute myocardial infarction
- I23.2 Ventricular septal defect as current complication following acute myocardial infarction
- I23.3 Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarction
- I23.6 Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction
- I23.7 Postinfarction angina
- I23.8 Other current complications following acute myocardial infarction
I24 Other acute ischemic heart diseases1 code
- I24.1 Dressler's syndrome
I25 Chronic ischemic heart disease3 codes
I27 Other pulmonary heart diseases14 codes
- I27.0 Primary pulmonary hypertension
- I27.1 Kyphoscoliotic heart disease
- I27.20 Pulmonary hypertension, unspecified
- I27.21 Secondary pulmonary arterial hypertension
- I27.22 Pulmonary hypertension due to left heart disease
- I27.23 Pulmonary hypertension due to lung diseases and hypoxia
- I27.24 Chronic thromboembolic pulmonary hypertension
- I27.29 Other secondary pulmonary hypertension
- I27.81 Cor pulmonale (chronic)
- I27.83 Eisenmenger's syndrome
- I27.848 Other Fontan-associated condition
- I27.849 Fontan related circulation, unspecified
- I27.89 Other specified pulmonary heart diseases
- I27.9 Pulmonary heart disease, unspecified
I28 Other diseases of pulmonary vessels4 codes
I30 Acute pericarditis4 codes
I31 Other diseases of pericardium8 codes
- I31.0 Chronic adhesive pericarditis
- I31.1 Chronic constrictive pericarditis
- I31.2 Hemopericardium, not elsewhere classified
- I31.31 Malignant pericardial effusion in diseases classified elsewhere
- I31.39 Other pericardial effusion (noninflammatory)
- I31.4 Cardiac tamponade
- I31.8 Other specified diseases of pericardium
- I31.9 Disease of pericardium, unspecified
I32 Pericarditis in diseases classified elsewhere1 code
- I32 Pericarditis in diseases classified elsewhere
I40 Acute myocarditis4 codes
I41 Myocarditis in diseases classified elsewhere1 code
- I41 Myocarditis in diseases classified elsewhere
I42 Cardiomyopathy10 codes
- I42.0 Dilated cardiomyopathy
- I42.1 Obstructive hypertrophic cardiomyopathy
- I42.2 Other hypertrophic cardiomyopathy
- I42.3 Endomyocardial (eosinophilic) disease
- I42.4 Endocardial fibroelastosis
- I42.5 Other restrictive cardiomyopathy
- I42.6 Alcoholic cardiomyopathy
- I42.7 Cardiomyopathy due to drug and external agent
- I42.8 Other cardiomyopathies
- I42.9 Cardiomyopathy, unspecified
I43 Cardiomyopathy in diseases classified elsewhere1 code
- I43 Cardiomyopathy in diseases classified elsewhere
I51 Complications and ill-defined descriptions of heart disease4 codes
I5A Non-ischemic myocardial injury (non-traumatic)1 code
- I5A Non-ischemic myocardial injury (non-traumatic)
I95 Hypotension3 codes
I97 Intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified15 codes
- I97.0 Postcardiotomy syndrome
- I97.110 Postprocedural cardiac insufficiency following cardiac surgery
- I97.111 Postprocedural cardiac insufficiency following other surgery
- I97.120 Postprocedural cardiac arrest following cardiac surgery
- I97.121 Postprocedural cardiac arrest following other surgery
- I97.130 Postprocedural heart failure following cardiac surgery
- I97.131 Postprocedural heart failure following other surgery
- I97.190 Other postprocedural cardiac functional disturbances following cardiac surgery
- I97.191 Other postprocedural cardiac functional disturbances following other surgery
- I97.710 Intraoperative cardiac arrest during cardiac surgery
- I97.711 Intraoperative cardiac arrest during other surgery
- I97.790 Other intraoperative cardiac functional disturbances during cardiac surgery
- I97.791 Other intraoperative cardiac functional disturbances during other surgery
- I97.88 Other intraoperative complications of the circulatory system, not elsewhere classified
- I97.89 Other postprocedural complications and disorders of the circulatory system, not elsewhere classified
R00 Abnormalities of heart beat2 codes
R01 Cardiac murmurs and other cardiac sounds1 code
- R01.2 Other cardiac sounds
R03 Abnormal blood-pressure reading, without diagnosis2 codes
R09 Other symptoms and signs involving the circulatory and respiratory system5 codes
R58 Hemorrhage, not elsewhere classified1 code
- R58 Hemorrhage, not elsewhere classified
R94 Abnormal results of function studies3 codes
S26 Injury of heart14 codes
- S26.00XA Unspecified injury of heart with hemopericardium, initial encounter
- S26.01XA Contusion of heart with hemopericardium, initial encounter
- S26.020A Mild laceration of heart with hemopericardium, initial encounter
- S26.021A Moderate laceration of heart with hemopericardium, initial encounter
- S26.022A Major laceration of heart with hemopericardium, initial encounter
- S26.09XA Other injury of heart with hemopericardium, initial encounter
- S26.10XA Unspecified injury of heart without hemopericardium, initial encounter
- S26.11XA Contusion of heart without hemopericardium, initial encounter
- S26.12XA Laceration of heart without hemopericardium, initial encounter
- S26.19XA Other injury of heart without hemopericardium, initial encounter
- S26.90XA Unspecified injury of heart, unspecified with or without hemopericardium, initial encounter
- S26.91XA Contusion of heart, unspecified with or without hemopericardium, initial encounter
- S26.92XA Laceration of heart, unspecified with or without hemopericardium, initial encounter
- S26.99XA Other injury of heart, unspecified with or without hemopericardium, initial encounter
T80 Complications following infusion, transfusion and therapeutic injection8 codes
- T80.1XXA Vascular complications following infusion, transfusion and therapeutic injection, initial encounter
- T80.211A Bloodstream infection due to central venous catheter, initial encounter
- T80.212A Local infection due to central venous catheter, initial encounter
- T80.218A Other infection due to central venous catheter, initial encounter
- T80.219A Unspecified infection due to central venous catheter, initial encounter
- T80.810A Extravasation of vesicant antineoplastic chemotherapy, initial encounter
- T80.818A Extravasation of other vesicant agent, initial encounter
- T80.90XA Unspecified complication following infusion and therapeutic injection, initial encounter
T82 Complications of cardiac and vascular prosthetic devices, implants and grafts85 codes
- T82.118A Breakdown (mechanical) of other cardiac electronic device, initial encounter
- T82.119A Breakdown (mechanical) of unspecified cardiac electronic device, initial encounter
- T82.128A Displacement of other cardiac electronic device, initial encounter
- T82.129A Displacement of unspecified cardiac electronic device, initial encounter
- T82.198A Other mechanical complication of other cardiac electronic device, initial encounter
- T82.199A Other mechanical complication of unspecified cardiac device, initial encounter
- T82.211A Breakdown (mechanical) of coronary artery bypass graft, initial encounter
- T82.212A Displacement of coronary artery bypass graft, initial encounter
- T82.213A Leakage of coronary artery bypass graft, initial encounter
- T82.218A Other mechanical complication of coronary artery bypass graft, initial encounter
- T82.221A Breakdown (mechanical) of biological heart valve graft, initial encounter
- T82.222A Displacement of biological heart valve graft, initial encounter
- T82.223A Leakage of biological heart valve graft, initial encounter
- T82.228A Other mechanical complication of biological heart valve graft, initial encounter
- T82.310A Breakdown (mechanical) of aortic (bifurcation) graft (replacement), initial encounter
- T82.311A Breakdown (mechanical) of carotid arterial graft (bypass), initial encounter
- T82.312A Breakdown (mechanical) of femoral arterial graft (bypass), initial encounter
- T82.318A Breakdown (mechanical) of other vascular grafts, initial encounter
- T82.319A Breakdown (mechanical) of unspecified vascular grafts, initial encounter
- T82.320A Displacement of aortic (bifurcation) graft (replacement), initial encounter
- T82.321A Displacement of carotid arterial graft (bypass), initial encounter
- T82.322A Displacement of femoral arterial graft (bypass), initial encounter
- T82.328A Displacement of other vascular grafts, initial encounter
- T82.329A Displacement of unspecified vascular grafts, initial encounter
- T82.330A Leakage of aortic (bifurcation) graft (replacement), initial encounter
- T82.331A Leakage of carotid arterial graft (bypass), initial encounter
- T82.332A Leakage of femoral arterial graft (bypass), initial encounter
- T82.338A Leakage of other vascular grafts, initial encounter
- T82.339A Leakage of unspecified vascular graft, initial encounter
- T82.390A Other mechanical complication of aortic (bifurcation) graft (replacement), initial encounter
- T82.391A Other mechanical complication of carotid arterial graft (bypass), initial encounter
- T82.392A Other mechanical complication of femoral arterial graft (bypass), initial encounter
- T82.398A Other mechanical complication of other vascular grafts, initial encounter
- T82.399A Other mechanical complication of unspecified vascular grafts, initial encounter
- T82.510A Breakdown (mechanical) of surgically created arteriovenous fistula, initial encounter
- T82.511A Breakdown (mechanical) of surgically created arteriovenous shunt, initial encounter
- T82.512A Breakdown (mechanical) of artificial heart, initial encounter
- T82.513A Breakdown (mechanical) of balloon (counterpulsation) device, initial encounter
- T82.514A Breakdown (mechanical) of infusion catheter, initial encounter
- T82.515A Breakdown (mechanical) of umbrella device, initial encounter
- T82.518A Breakdown (mechanical) of other cardiac and vascular devices and implants, initial encounter
- T82.519A Breakdown (mechanical) of unspecified cardiac and vascular devices and implants, initial encounter
- T82.520A Displacement of surgically created arteriovenous fistula, initial encounter
- T82.521A Displacement of surgically created arteriovenous shunt, initial encounter
- T82.522A Displacement of artificial heart, initial encounter
- T82.523A Displacement of balloon (counterpulsation) device, initial encounter
- T82.524A Displacement of infusion catheter, initial encounter
- T82.525A Displacement of umbrella device, initial encounter
- T82.528A Displacement of other cardiac and vascular devices and implants, initial encounter
- T82.529A Displacement of unspecified cardiac and vascular devices and implants, initial encounter
- T82.530A Leakage of surgically created arteriovenous fistula, initial encounter
- T82.531A Leakage of surgically created arteriovenous shunt, initial encounter
- T82.532A Leakage of artificial heart, initial encounter
- T82.533A Leakage of balloon (counterpulsation) device, initial encounter
- T82.534A Leakage of infusion catheter, initial encounter
- T82.535A Leakage of umbrella device, initial encounter
- T82.538A Leakage of other cardiac and vascular devices and implants, initial encounter
- T82.539A Leakage of unspecified cardiac and vascular devices and implants, initial encounter
- T82.590A Other mechanical complication of surgically created arteriovenous fistula, initial encounter
- T82.591A Other mechanical complication of surgically created arteriovenous shunt, initial encounter
- T82.592A Other mechanical complication of artificial heart, initial encounter
- T82.593A Other mechanical complication of balloon (counterpulsation) device, initial encounter
- T82.594A Other mechanical complication of infusion catheter, initial encounter
- T82.595A Other mechanical complication of umbrella device, initial encounter
- T82.598A Other mechanical complication of other cardiac and vascular devices and implants, initial encounter
- T82.599A Other mechanical complication of unspecified cardiac and vascular devices and implants, initial encounter
- T82.6XXA Infection and inflammatory reaction due to cardiac valve prosthesis, initial encounter
- T82.7XXA Infection and inflammatory reaction due to other cardiac and vascular devices, implants and grafts, initial encounter
- T82.817A Embolism due to cardiac prosthetic devices, implants and grafts, initial encounter
- T82.818A Embolism due to vascular prosthetic devices, implants and grafts, initial encounter
- T82.827A Fibrosis due to cardiac prosthetic devices, implants and grafts, initial encounter
- T82.828A Fibrosis due to vascular prosthetic devices, implants and grafts, initial encounter
- T82.837A Hemorrhage due to cardiac prosthetic devices, implants and grafts, initial encounter
- T82.838A Hemorrhage due to vascular prosthetic devices, implants and grafts, initial encounter
- T82.847A Pain due to cardiac prosthetic devices, implants and grafts, initial encounter
- T82.848A Pain due to vascular prosthetic devices, implants and grafts, initial encounter
- T82.855A Stenosis of coronary artery stent, initial encounter
- T82.856A Stenosis of peripheral vascular stent, initial encounter
- T82.857A Stenosis of other cardiac prosthetic devices, implants and grafts, initial encounter
- T82.858A Stenosis of other vascular prosthetic devices, implants and grafts, initial encounter
- T82.867A Thrombosis due to cardiac prosthetic devices, implants and grafts, initial encounter
- T82.868A Thrombosis due to vascular prosthetic devices, implants and grafts, initial encounter
- T82.897A Other specified complication of cardiac prosthetic devices, implants and grafts, initial encounter
- T82.898A Other specified complication of vascular prosthetic devices, implants and grafts, initial encounter
- T82.9XXA Unspecified complication of cardiac and vascular prosthetic device, implant and graft, initial encounter
T86 Complications of transplanted organs and tissue11 codes
- T86.20 Unspecified complication of heart transplant
- T86.21 Heart transplant rejection
- T86.22 Heart transplant failure
- T86.23 Heart transplant infection
- T86.290 Cardiac allograft vasculopathy
- T86.298 Other complications of heart transplant
- T86.30 Unspecified complication of heart-lung transplant
- T86.31 Heart-lung transplant rejection
- T86.32 Heart-lung transplant failure
- T86.33 Heart-lung transplant infection
- T86.39 Other complications of heart-lung transplant
Z45 Encounter for adjustment and management of implanted device4 codes
- Z45.010 Encounter for checking and testing of cardiac pacemaker pulse generator [battery]
- Z45.018 Encounter for adjustment and management of other part of cardiac pacemaker
- Z45.02 Encounter for adjustment and management of automatic implantable cardiac defibrillator
- Z45.09 Encounter for adjustment and management of other cardiac device
Z94 Transplanted organ and tissue status2 codes
Z95 Presence of cardiac and vascular implants and grafts7 codes
- Z95.2 Presence of prosthetic heart valve
- Z95.3 Presence of xenogenic heart valve
- Z95.4 Presence of other heart-valve replacement
- Z95.811 Presence of heart assist device
- Z95.812 Presence of fully implantable artificial heart
- Z95.820 Peripheral vascular angioplasty status with implants and grafts
- Z95.828 Presence of other vascular implants and grafts
ICD-10-PCS
Procedure Codes
Procedure codes do not drive assignment for this DRG. DRG 315 is a Medical DRG, assigned from the principal diagnosis above.
Frequently Asked Questions
What is MS-DRG 315?
MS-DRG 315 (Other Circulatory System Diagnoses with CC) is a medical DRG in MDC 05 (Diseases & Disorders of the Circulatory System). Its FY 2026 relative weight is 0.9633 with a geometric mean length of stay of 2.6 days.
What is the difference between DRG 314, 315, 316?
All 3 share the same base category; the severity of secondary diagnoses separates them: 314 (with MCC), 315 (with CC), 316 (without CC/MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.
How many diagnosis codes group to DRG 315?
257 ICD-10-CM principal diagnosis codes group to this DRG, spanning 43 three-character categories.
What is the relative weight of DRG 315?
The FY 2026 relative weight of this DRG is 0.9633, meaning reimbursement of roughly 0.96 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
← PreviousDRG 314 – Other Circulatory System Diagnoses with MCCNext →DRG 316 – Other Circulatory System Diagnoses without CC/MCC
Source: CMS ICD-10 MS-DRG v43.0 Definitions Manual and the FY 2026 IPPS Final Rule (Table 5), effective October 1, 2025 through September 30, 2026. We publish the DRG assignments as CMS defines them and add the navigation, search, and code links.
