ICD↔CPT crosswalk
CPT 33929: ICD-10 codes that support medical necessity
These ICD-10-CM diagnoses support medical necessity for CPT 33929 under Medicare coverage policies (LCDs, NCDs, and Billing & Coding articles). Billing CPT 33929 with a diagnosis that isn't covered typically denies as CARC 50 — not medically necessary.
National approximation. Coverage varies by MAC and state — confirm against the specific LCD/NCD and article that applies to your jurisdiction and date of service.
| ICD-10 | Description |
|---|---|
| I09.81 | Rheumatic heart failure |
| I11.0 | Hypertensive heart disease with heart failure |
| I13.0 | Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease |
| I13.2 | Hypertensive heart and chronic kidney disease with heart failure and with stage 5 chronic kidney disease, or end stage renal disease |
| I20.0 | Unstable angina |
| I21.01 | ST elevation (STEMI) myocardial infarction involving left main coronary artery |
| I21.02 | ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery |
| I21.09 | ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall |
| I21.11 | ST elevation (STEMI) myocardial infarction involving right coronary artery |
| I21.19 | ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall |
| I21.21 | ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery |
| I21.29 | ST elevation (STEMI) myocardial infarction involving other sites |
| I21.3 | ST elevation (STEMI) myocardial infarction of unspecified site |
| I21.4 | Non-ST elevation (NSTEMI) myocardial infarction |
| I22.0 | Subsequent ST elevation (STEMI) myocardial infarction of anterior wall |
| I22.1 | Subsequent ST elevation (STEMI) myocardial infarction of inferior wall |
| I22.2 | Subsequent non-ST elevation (NSTEMI) myocardial infarction |
| I22.8 | Subsequent ST elevation (STEMI) myocardial infarction of other sites |
| I22.9 | Subsequent ST elevation (STEMI) myocardial infarction of unspecified site |
| I24.0 | Acute coronary thrombosis not resulting in myocardial infarction |
| I24.1 | Dressler's syndrome |
| I24.9 | Acute ischemic heart disease, unspecified |
| I25.10 | Atherosclerotic heart disease of native coronary artery without angina pectoris |
| I25.110 | Atherosclerotic heart disease of native coronary artery with unstable angina pectoris |
| I25.111 | Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm |
| I25.112 | Atherosclerotic heart disease of native coronary artery with refractory angina pectoris |
| I25.118 | Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris |
| I25.119 | Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris |
| I25.5 | Ischemic cardiomyopathy |
| I25.6 | Silent myocardial ischemia |
| I25.700 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris |
| I25.701 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm |
| I25.702 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris |
| I25.708 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris |
| I25.709 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris |
| I25.710 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris |
| I25.711 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm |
| I25.712 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris |
| I25.718 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris |
| I25.719 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris |
| I25.720 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris |
| I25.721 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm |
| I25.722 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris |
| I25.728 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris |
| I25.729 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris |
| I25.730 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris |
| I25.731 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm |
| I25.732 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris |
| I25.738 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris |
| I25.739 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris |
| I25.750 | Atherosclerosis of native coronary artery of transplanted heart with unstable angina |
| I25.751 | Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm |
| I25.752 | Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris |
| I25.758 | Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris |
| I25.759 | Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris |
| I25.760 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable angina |
| I25.761 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm |
| I25.762 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris |
| I25.768 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris |
| I25.769 | Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectoris |
| I25.790 | Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris |
| I25.791 | Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm |
| I25.792 | Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris |
| I25.798 | Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris |
| I25.799 | Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris |
| I25.810 | Atherosclerosis of coronary artery bypass graft(s) without angina pectoris |
| I25.811 | Atherosclerosis of native coronary artery of transplanted heart without angina pectoris |
| I25.812 | Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris |
| I25.89 | Other forms of chronic ischemic heart disease |
| I25.9 | Chronic ischemic heart disease, unspecified |
| I34.0 | Nonrheumatic mitral (valve) insufficiency |
| I34.1 | Nonrheumatic mitral (valve) prolapse |
| I34.2 | Nonrheumatic mitral (valve) stenosis |
| I34.81 | Nonrheumatic mitral (valve) annulus calcification |
| I34.89 | Other nonrheumatic mitral valve disorders |
| I34.9 | Nonrheumatic mitral valve disorder, unspecified |
| I35.0 | Nonrheumatic aortic (valve) stenosis |
| I35.1 | Nonrheumatic aortic (valve) insufficiency |
| I35.2 | Nonrheumatic aortic (valve) stenosis with insufficiency |
| I35.8 | Other nonrheumatic aortic valve disorders |
| I35.9 | Nonrheumatic aortic valve disorder, unspecified |
| I36.0 | Nonrheumatic tricuspid (valve) stenosis |
| I36.1 | Nonrheumatic tricuspid (valve) insufficiency |
| I36.2 | Nonrheumatic tricuspid (valve) stenosis with insufficiency |
| I36.8 | Other nonrheumatic tricuspid valve disorders |
| I36.9 | Nonrheumatic tricuspid valve disorder, unspecified |
| I37.0 | Nonrheumatic pulmonary valve stenosis |
| I37.1 | Nonrheumatic pulmonary valve insufficiency |
| I37.2 | Nonrheumatic pulmonary valve stenosis with insufficiency |
| I37.8 | Other nonrheumatic pulmonary valve disorders |
| I37.9 | Nonrheumatic pulmonary valve disorder, unspecified |
| I38 | Endocarditis, valve unspecified |
| I39 | Endocarditis and heart valve disorders in diseases classified elsewhere |
| I42.0 | Dilated 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 elsewhere |
| I46.2 | Cardiac arrest due to underlying cardiac condition |
| I46.8 | Cardiac arrest due to other underlying condition |
| I46.9 | Cardiac arrest, cause unspecified |
| I47.0 | Re-entry ventricular arrhythmia |
| I47.21 | Torsades de pointes |
| I47.29 | Other ventricular tachycardia |
| I47.9 | Paroxysmal tachycardia, unspecified |
| I48.0 | Paroxysmal atrial fibrillation |
| I48.11 | Longstanding persistent atrial fibrillation |
| I48.19 | Other persistent atrial fibrillation |
| I49.01 | Ventricular fibrillation |
| I49.02 | Ventricular flutter |
| I49.1 | Atrial premature depolarization |
| I49.2 | Junctional premature depolarization |
| I49.3 | Ventricular premature depolarization |
| I49.40 | Unspecified premature depolarization |
| I49.49 | Other premature depolarization |
| I49.5 | Sick sinus syndrome |
| I49.8 | Other specified cardiac arrhythmias |
| I49.9 | Cardiac arrhythmia, unspecified |
| I50.1 | Left ventricular failure, unspecified |
| I50.20 | Unspecified systolic (congestive) heart failure |
| I50.21 | Acute systolic (congestive) heart failure |
| I50.22 | Chronic systolic (congestive) heart failure |
| I50.23 | Acute on chronic systolic (congestive) heart failure |
| I50.30 | Unspecified diastolic (congestive) heart failure |
| I50.31 | Acute diastolic (congestive) heart failure |
| I50.32 | Chronic diastolic (congestive) heart failure |
| I50.33 | Acute on chronic diastolic (congestive) heart failure |
| I50.40 | Unspecified combined systolic (congestive) and diastolic (congestive) heart failure |
| I50.41 | Acute combined systolic (congestive) and diastolic (congestive) heart failure |
| I50.42 | Chronic combined systolic (congestive) and diastolic (congestive) heart failure |
| I50.43 | Acute on chronic combined systolic (congestive) and diastolic (congestive) heart failure |
| I50.814 | Right heart failure due to left heart failure |
| I50.82 | Biventricular heart failure |
| I50.84 | End stage heart failure |
| I50.9 | Heart failure, unspecified |
| I51.4 | Myocarditis, unspecified |
| I51.9 | Heart disease, unspecified |
| I52 | Other heart disorders in diseases classified elsewhere |
| I5A | Non-ischemic myocardial injury (non-traumatic) |
| 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 |
| M32.11 | Endocarditis in systemic lupus erythematosus |
| Q20.0 | Common arterial trunk |
| Q20.1 | Double outlet right ventricle |
| Q20.2 | Double outlet left ventricle |
| Q20.3 | Discordant ventriculoarterial connection |
| Q20.4 | Double inlet ventricle |
| Q20.5 | Discordant atrioventricular connection |
| Q20.6 | Isomerism of atrial appendages |
| Q20.8 | Other congenital malformations of cardiac chambers and connections |
| Q20.9 | Congenital malformation of cardiac chambers and connections, unspecified |
| Q21.0 | Ventricular septal defect |
| Q21.11 | Secundum atrial septal defect |
| Q21.12 | Patent foramen ovale |
| Q21.13 | Coronary sinus atrial septal defect |
| Q21.14 | Superior sinus venosus atrial septal defect |
| Q21.15 | Inferior sinus venosus atrial septal defect |
| Q21.16 | Sinus venosus atrial septal defect, unspecified |
| Q21.19 | Other specified atrial septal defect |
| Q21.21 | Partial atrioventricular septal defect |
| Q21.22 | Transitional atrioventricular septal defect |
| Q21.23 | Complete atrioventricular septal defect |
| Q21.3 | Tetralogy of Fallot |
| Q21.4 | Aortopulmonary septal defect |
| Q21.8 | Other congenital malformations of cardiac septa |
| Q21.9 | Congenital malformation of cardiac septum, unspecified |
| Q22.0 | Pulmonary valve atresia |
| Q22.1 | Congenital pulmonary valve stenosis |
| Q22.2 | Congenital pulmonary valve insufficiency |
| Q22.3 | Other congenital malformations of pulmonary valve |
| Q22.4 | Congenital tricuspid stenosis |
| Q22.5 | Ebstein's anomaly |
| Q22.6 | Hypoplastic right heart syndrome |
| Q22.8 | Other congenital malformations of tricuspid valve |
| Q22.9 | Congenital malformation of tricuspid valve, unspecified |
| Q23.0 | Congenital stenosis of aortic valve |
| Q23.1 | Congenital insufficiency of aortic valve |
| Q23.2 | Congenital mitral stenosis |
| Q23.3 | Congenital mitral insufficiency |
| Q23.4 | Hypoplastic left heart syndrome |
| Q23.9 | Congenital malformation of aortic and mitral valves, unspecified |
| Q24.0 | Dextrocardia |
| Q24.1 | Levocardia |
| Q24.2 | Cor triatriatum |
| Q24.3 | Pulmonary infundibular stenosis |
| Q24.4 | Congenital subaortic stenosis |
| Q24.5 | Malformation of coronary vessels |
| Q24.6 | Congenital heart block |
| Q24.8 | Other specified congenital malformations of heart |
| Q24.9 | Congenital malformation of heart, unspecified |
| R00.1 | Bradycardia, unspecified |
| R57.0 | Cardiogenic shock |
| 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 |
| T82.512A | Breakdown (mechanical) of artificial heart, initial encounter |
| T82.514A | Breakdown (mechanical) of infusion catheter, initial encounter |
| T82.518A | Breakdown (mechanical) of other cardiac and vascular devices and implants, initial encounter |
| T82.522A | Displacement of artificial heart, 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 |
| T82.532A | Leakage of artificial heart, initial encounter |
| T82.538A | Leakage of other cardiac and vascular devices and implants, initial encounter |
| T82.592A | Other mechanical complication of artificial heart, initial encounter |
| T82.598A | Other mechanical complication of other cardiac and vascular devices and implants, initial encounter |
| 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 |
| Z48.21 | Encounter for aftercare following heart transplant |
| Z48.280 | Encounter for aftercare following heart-lung transplant |
| Z94.1 | Heart transplant status |
| Z94.3 | Heart and lungs transplant status |
| Z95.811 | Presence of heart assist device |
Frequently asked questions
Which ICD-10 codes support medical necessity for CPT 33929?
Medicare coverage policies (LCDs/NCDs and Billing & Coding articles) list 240 ICD-10 diagnosis codes that support medical necessity for CPT 33929. The covered codes are listed on this page. Coverage varies by MAC/state — always confirm against the policy that applies to you.
What is a medical-necessity (LCD/NCD) crosswalk?
A claim whose procedure isn't supported by a covered diagnosis denies as "not medically necessary" (CARC 50). CMS coverage policies define which diagnoses justify a procedure; this page is the ICD-10 → CPT 33929 view of that relationship.
Catch medical-necessity denials before you bill. CareNiva scrubs claims against LCD/NCD coverage and flags unsupported diagnoses — in the same platform you run visits and billing.
More free billing tools: all crosswalks · NCCI edits · Medicare fees · denial codes
Informational only, not coding, billing, or legal advice. Based on CMS Medicare Coverage Database data; verify the current LCD/NCD for your MAC before billing.
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