The codes in these crosswalks were selected based on the most commonly used ICD-9 codes according to historical MedStar Health coding data and from professional coding associations, and are ordered by frequency of use.
Not all the codes you need are contained in this list. For a comprehensive list of ICD-10 codes, use Diagnosis Assistant or the IMO Anywhere tool.
| Code | Description (ICD-9 codes are in blue) |
|---|---|
| 414.00 | Coronary atherosclerosis of unspecified type of vessel, native or graft |
|
|
No map (No ICD-10 code exists for unspecified vessel; native or bypass graft must be indicated) |
| 786.50 | Chest pain, unspecified |
| R07.9 | Chest pain, unspecified |
| R07.89 | Other chest pain |
|
R07.2 |
Precordial pain |
|
R07.1 |
Chest pain on breathing |
|
R07.81 |
Pleurodynia |
| 427.89 | Cardiac dysrhythmias, other specified |
| I49.8 | Other specified cardiac arrhythmias |
|
|
*Instructional note in ICD-1 0-CM indicates to code first cardiac arrhythmia complicating: |
|
|
- abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- obstetric surgery and procedures (O75.4) |
| 427.31 | Atrial fibrillation |
| I48.0 | Paroxysmal atrial fibrillation |
| I48.1 |
Persistent atrial fibrillation |
|
I48.2 |
Chronic atrial fibrillation |
|
I48.91 |
Unspecified atrial-fibrillation |
| 424.1 | Aortic valve disorders |
| I35.9 | Nonrheumatic aortic valve disorder, unspecified |
| I35.0 | Nonrheumatic aortic (va)ve) stenosis |
|
I35.1 |
Nonrheumatic aortic (valve) insufficiency |
|
I35.2 |
Nonrheumatic aortic (valve) stenosis with insuffisiciency |
|
I35.8 |
Other nonrheumatic aortic valve disorders |
| 414.01 | Coronary athersclerosis of native coronary artery |
| I25.10 | Atherosclerotic heart disease of native coronary artery without angina pectoris |
|
|
**Assign code from 125.110-125.119 when angina pectoris is present *Instructional note in ICD-10-CM indicates to use additional code, if applicable, to identify coronary atherosclerosis due to lipid rich plaque (125.83) Use additional code to identify:
|
| 794.31 | Abnormal electrocardiogram |
| R94.31 | Abnormal electrocardiogram |
| 786.05 | Shortness of breath |
| R06.02 | Shortness of breath |
| 427.1 | Paroxysmal ventricular tachycardia |
| I47.2 | Ventricular tachycardia |
| 425.4 | Primary cardiomyopathies, NEC |
| I42.2 | Other hypertrophic cardiomyopathy |
| I42.5 | Other restrictive cardiomyopathy |
|
I42.8 |
Other cardiomyopathies |
|
I42.9 |
Cardiomyopathy, unspecified (familial)(idiopathic) |
|
|
*Instructional note in ICD-10-CM indicates to code first cardiomyopathy complicating pregnancy and puerperium (099.4) |
| 427.69 | Premature beats, NEC |
| I49.3 | Ventricular premature depolarization |
| I49.49 | Other premature depolarization |
|
|
*Instructional note in ICD-10-CM indicates to code first cardiac arrhythmia complicating: |
|
|
- abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- obstetric surgery and procedures (O75.4) |
| 780.2 | Syncope and collapse |
| R55 | Syncope and collapse |
| 427.81 | Sinoatrial node dysfunction |
| I49.5 | Sick sinus syndrome |
|
|
*Instructional note in ICD-10-CM indicates to code first cardiac arrhythmia complicating: |
|
|
- abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- obstetric surgery and procedures (O75.4) |
| 786.09 | Dyspnea and respiratory abnormalities, other |
| R06.89 | Other abnormalities of breathing |
| 424.0 | Mitral value disorders |
| I34.9 | Nonrheumatic mitral valve disorder, unspecified |
|
I34.0 | Nonrheumatic mitral (valve) insufficiency |
|
I34.1 |
Nonrheumatic mitral (valve) prolapse |
|
I34.2 |
Nonrheumatic mitral (valve) stenosis |
|
I34.8 |
Other nonrheumatic mitral valve disorders |
| 794.30 | Abnormal cardiovascular function study, unspecified |
| R94.30 | Abnormal result of cardiovascular function study, unspecified |
| R94.39 | Abnormal result of other cardiovascular function study |
| 785.1 | Palpitations |
| R00.2 | Palpitations |
| F45.8 | Psychogenic palpitations |
| 427.9 | Cardiac dysrhythmia, unspecified |
| I49.9 | Cardiac arrhythmia, unspecified |
|
|
**Code first cardiac arrhythmia complicating: |
|
|
- abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- obstetric surgery and procedures (O75.4) |
|
I47.0 |
Re-entry ventricular arrhythmia |
|
I47.1 |
Supraventricular tachycardia |
|
I47.2 |
Ventricular tachycardia |
|
I47.9 |
Paroxysmal tachycardia, unspecified |
|
|
** For 147.0-147.9 Code first cardiac arrhythmia complicating: |
|
|
- abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- obstetric surgery and procedures (O75.4) |
|
I48.0 |
Atrial fibrillation |
|
I48.1 |
Atrial flutter |
|
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 |
|
|
** For 149.0-149.9 Code first cardiac arrhythmia complicating: |
|
|
- abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- obstetric surgery and procedures (O75.4) |
| 429.3 | Cardiomegaly |
| I51.7 | Cardiomegaly |
| 428.22 | Systolic heart failure, chronic |
| I50.22 | Chronic systolic (congestive) heart failure |
|
| * Instructional note in ICD-10-CM indicates to code first: |
|
|
- heart failure complicating abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- heart failure following surgery (I97.13-) |
|
|
- heart failure due to hypertension (I11.0) |
|
|
- heart failure due to hypertension with chronic kidney disease (I13-) |
|
|
- obstetric surgery and procedures (O75.4) |
|
|
- rheumatic heart failure (I09.81) |
| 427.61 | Supraventricular premature beats |
| I49.1 | Atrial premature depolarization |
|
| * Instructional note in ICD-10-CM indicates to code first cardiac arrhythmia complicating: |
|
|
- abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- obstetric surgery and procedures (O75.4) |
| 427.0 | Paroxysmal supraventricular tachycardia |
| I47.1 | Supraventricular tachycardia |
|
| * Instructional note in ICD-10-CM indicates to code first tachycardia complicating: |
|
|
- abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- obstetric surgery and procedures (O75.4) |
| 786.59 | Chest pain, Other |
| R07.89 | Other chest pain NOS |
| R07.82 | Intercostal pain |
| 401.9 | Hypertension (essential), unspecified |
| I10 | Essential (primary) hypertension |
|
|
*Instructional note in ICD-10-CM indicates to use additional code to identify:
|
| 426.0 | Atrioventricular block, complete |
| I44.2 | Atrioventricular block, complete |
| 426.11 | Atrioventricular block, first degree |
| I44.0 | Atrioventricular block, first degree |
| 401.1 | Hypertension, benign |
| I10 | Essential (primary) hypertension |
|
|
*Instructional note in ICD-10-CM indicates to use additional code to identify:
|
| 272.4 | Hyperlipidemia, other and unspecified |
| E78.4 | Other hyperlipidemia |
| E78.5 | Hyperlipidemia, unspecified |
|
E78.0 |
Pure hypercholesterolemia |
|
E78.1 |
Pure hyperglyceridemia |
|
E78.2 |
Mixed hyperlipidemia |
|
E78.3 |
Hyperchylomicronemia |
|
E78.6 |
Lipoprotein deficiency |
| V72.81 | Pre-operative cardiovascular exam |
| Z01.810 | Encoutner for preprocedural cardiovascular examination |
| 785.2 | Cardiac murmurs, undiagnosed |
| R01.1 | Cardiac murmur, unspecified |
| 428.0 | Congestive heart failure, unspecified |
| I50.9 | Heart failure, unspecified |
|
I50.1 | Left ventricular failure |
|
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 |
|
|
*Instructional note in ICD-10-CM indicates to code first: |
|
|
- heart failure complicating abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- heart failure following surgery (I97.13-) |
|
|
- heart failure due to hypertension (I11.0) |
|
|
- heart failure due to hypertension with chronic kidney disease (I13-) |
|
|
- obstetric surgery and procedures (O75.4) |
|
|
- rheumatic heart failure (I09.81) |
| 414.8 | Other specified forms of chronic ischemic heart disease |
| I25.89 | Other forms of chronic ischemic heart disease |
| I25.9 | Ischemic heart disease; unspecified |
| 427.32 | Atrial flutter |
| I48.3 | Typical atrial flutter |
|
I48.4 | Atypical atrial flutter |
|
I48.92 |
Unspecified atrial flutter |
| 426.4 | Right bundle branch block |
| I45.10 | Unspecified right bundle-branch block |
|
I45.19 | Other right bundle-branch block |
|
I45.2 | Bifasicular block |
| 780.79 | Other malaise and fatigue |
| R53.81 | Other malaise |
| R53.1 | Weakness |
|
R53.83 |
Other fatigue |
| G93.3 |
Postviral fatigue syndrome |
| 413.9 | Angina pectoris, other and unspecified |
| I20.8 | Other forms of angina pectoris |
|
I20.9 | Angina pectoris, unspecified |
|
I20.0 |
Unstable angina |
|
I20.1 |
Angina pectoris with documented spasm |
|
|
*Instructional note in ICD-10-CM indicates to use additional code to identify: |
|
| - exposure to environmental tobacco smoke (Z77.22) |
|
| - history of tobacco use (Z87.891) |
|
| - occupational exposure to environmental tobacco smoke (Z57.31) |
|
| - tobacco dependence (F17-) |
|
| - tobacco use (Z72.0) |
| 428.42 | Combined systolic and diastolic heart failure, chronic |
| I50.42 | Chronic combined systolic (congestive) and diastolic (congestive) heart failure |
|
| *Instructional note in ICD-10-CM indicates to code first |
|
|
- heart failure complicating abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- heart failure following surgery (I97.13-) |
|
|
- heart failure due to hypertension (I11.0) |
|
|
- heart failure due to hypertension with chronic kidney disease (I13-) |
|
| - obstetric surgery and procedures (O75.4) |
|
|
- rheumatic heart failure (I09.81) |
| 780.4 | Dizziness and giddiness |
| R42 | Dizziness and giddiness |
| 411.1 | Intermediate coronary syndrome |
| I20.0 | Unstable angina |
|
| *Instructional note in ICD-10-CM indicates to use additional code to identify: |
|
|
- exposure to environmental tobacco smoke (Z77.22) |
|
|
- history of tobacco use (Z87.891) |
|
|
- occupational exposure to environmental tobacco smoke (Z57.31) |
|
|
- tobacco dependence (F17-) |
|
|
- tobacco use (Z72.0) |
| 412 | Myocardial infarct, old |
| I25.2 | Old myocardial infarction |
|
| *Instructional note in ICD-10-CM indicates to use additional code to identify: |
|
|
- exposure to environmental tobacco smoke (Z77.22) |
|
|
- history of tobacco use (Z87.891) |
|
|
- occupational exposure to environmental tobacco smoke (Z57.31) |
|
|
- tobacco dependence (F17-) |
|
|
- tobacco use (Z72.0) |
| 426.3 | Left bundle branch block, other and unspecified |
| I44.7 | Left bundle-branch block, unspecified |
|
I45.2 | Bifascicular block |
|
I44.60 |
Unspecified bifascicular block |
|
I44.4 |
Left anterior bifascicular block |
|
I44.5 |
Left posterior bifascicular block |
| 426.50 | Bundle branch block, unspecified |
| I45.4 | Nonspecific intraventricular block |
|
I44.30 | Unspecified atrioventricular block |
|
I44.39 |
Other atrioventricular block |
| 425.11 | Hypertrophic obstructive cardiomyopathy |
| I42.1 | Obstructive hypertrophic cardiomyopathy |
|
| *Instructional note in ICD-10-CM indicates to code first cardiomyopathy complicating pregnancy and puerperium (099.4) |
| 424.2 | Tricuspid valve disorders, specified as nonrheumatic |
| 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 |
Non rheumatic tricuspid valve disorder, unspecified |
| 410.40 | Myocardial infarction, acute, of other inferior wall, episode of care unspecified |
| I21.19 | ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall |
|
I21.1 | Subsequent ST elevation (STEMI) myocardial infarction of inferior wall |
|
|
*Instructional note in ICD-10-CM indicates to use additional code to identify: |
|
|
- exposure to environmental tobacco smoke (Z77.22) |
|
|
- history of tobacco use (Z87.891) |
|
|
- occupational exposure to environmental tobacco smoke (Z57.31) |
|
|
- status post administration of tPA (rtPA) in a different facility
within the last 24 hours prior to admission to current facility
(Z92.82) |
|
|
- tobacco dependence (F17-) |
|
|
- tobacco use (Z72.0) |
| 785.0 | Tachycardia, unspecified |
| R00.0 | Tachycardia, unspecified |
| 416.8 | Pulmonary heart diseases, other, chronic |
| I27.2 | Other secondary pulmonary hypertension |
| I27.89 | Other specified pulmonary heart disease |
|
I27.9 |
Pulmonary heart disease, unspecified |
|
|
*Instructional note under I27.2 states to code also associated
underlying condition |
| 426.13 | Atrioventricular block, second degree, other |
| I44.1 | Atrioventricular block, second degree |
| 782.3 | Edema |
| R60.0 | Localized edema |
|
R60.1 |
Generalized edema |
|
R60.9 | Edema, unspecified |
| 427.41 | Ventricular fibrillation |
| I49.01 | Ventricular fibrillation |
|
| * Instructional note in ICD-10-CM indicates to code first cardiac arrhythmia complicating: |
|
|
- abortion or ectopic or molar
pregnancy (O00-O07, O08.8) |
|
|
- obstetric surgery and procedures (O75.4) |
| 416.0 | Primary pulmonary hypertension |
| I27.0 | Primary pulmonary hypertension |
| 786.51 | Precordial pain |
| R07.2 |
Precordial pain
|
| 402.10 | Benign hypertensive heart disease without heart failure |
| I11.9 | Benign hypertensive heart disease without heart failure |
| 428.1 | Left heart failure |
| I50.1 | Left ventricular failure |
| 433.10 | Occlusion and stenosis of carotid artery without cerebral infarction |
|
|
Document which carotid artery is involved and note laterality. |
| I65.29 | Occlusion and stenosis of unspecified carotid artery |
| I65.21 | Occlusion and stenosis of right carotid artery |
|
I65.22 |
Occlusion and stenosis of left carotid artery |
|
I65.23 |
Occlusion and stenosis of bilateral carotid arteries |
| 793.2 | Nonspecific (abnormal) findings on radiological and other examination of other intrathoracic organs |
|
|
Documentation must include if abnormal findings are of the heart and coronary circulation or other specified body structures. |
| R93.1 | Abnormal findings on diagnostic imaging of heart and coronary circulation |
| R93.8 | Abnormal findings on diagnostic imaging of other specified body structures |
| 272.0 | Pure hypercholesterolemia |
| E78.0 | Pure hypercholesterolemia |
| 440.21 | Atherosclerosis of native arteries of the extremities unspecified |
| I70.209 | Unspecified atherosclerosis of native arteries of extremities, unspecified extremity |
| I70.201 | Unspecified atherosclerosis of native arteries of extremities, right leg |
|
I70.202 |
Unspecified atherosclerosis of native arteries of extremities, left leg |
|
I70.203 |
Unspecified atherosclerosis of native arteries of extremities, bilateral legs |
|
I70.208 |
Unspecified atherosclerosis of native arteries of extremities, other extremity |
| 428.23 | Acute on chronic systolic heart failure |
| I50.23 | Acute on chronic systolic heart failure |
| 414.04 | Coronary atherosclerosis of artery bypass graft |
|
| Documentation should specify if atherosclerosis of autologous or other CABG with or without angina pectoris. Note type of angina pectoris (unstable, unspecified, other) and if spasms are presenting. ICD-10 options include the following: |
| I25.729 | Atherosclerosis of autologous artery coronary artery bypass graft(s) 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 |
|
I25.798 |
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 |
|
I25.721 |
Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm |
| 436 | Acute but ill-defined cerebrovascular disease |
| I67.89 | Other cerebrovascular disease |
| 435.9 | Unspecified transient cerebral ischemia |
|
|
Documentation should note cerebrovascular vasospasm, vasoconstriction, or if reversible cerebrovascular vasoconstriction syndrome: |
| G45.9 | Transient cerebral ischemic attack, unspecified |
|
I67.848 |
Other cerebrovascular vasospasm and vasoconstriction |
|
I67.841 |
Reversible cerebrovascular vasoconstriction syndrome |
| 785.9 | Other symptoms involving cardiovascular system |
| R06.89 | Other specified symptoms and signs involving the circulatory and respiratory systems |
| R06.4 | Hyperventilation |
|
R06.81 |
Apnea, not elsewhere classified |
|
R06.3 |
Periodic breathing |
|
R06.82 |
Tachypnea, not elsewhere classified |
| 327.23 | Obstructive sleep apnea (adult) (pediatric) |
| G47.33 | Obstructive sleep apnea (adult) (pediatric) |
| 395.0 | Rheumatic aortic stenosis |
| I06.0 | Rheumatic aortic stenosis |
| 410.71 | Subendocardial infarction initial episode of care |
|
| Must document if NSTEMI is original or subsequent. |
| I21.4 | Non-ST elevation (NSTEMI) myocardial infarction |
|
I22.2 |
Subsequent non-ST elevation (NSTEMI) myocardial infarction |
| 425.9 | Secondary cardiomyopathy unspecified |
|
| Document if secondary cardiomyopathy is due to drug and external agent. ICD-10 options include: |
| I42.7 | Cardiomyopathy due to drug and external agent |
|
I42.9 |
Cardiomyopathy, unspecified |
| 410.70 | Subendocardial infarction episode of care unspecified |
| I21.4 | Non-ST elevation (NSTEMI) myocardial infarction |
| V43.3 | Heart valve replaced by other means |
| Z95.2 | Presence of prosthetic heart valve |
| 402.11 | Benign hypertensive heart disease with heart failure |
| I11.0 | Benign hypertensive heart disease with heart failure |
| 426.7 | Anomalous atrioventricular excitation |
|
|
Anomalous atrioventricular excitation now maps to pre-excitation syndrome |
| I45.6 | Pre-excitation syndrome |
| 427.5 | Cardiac arrest |
| I46.2 | Cardiac arrest due to underlying cardiac condition |
| I46.8 | Cardiac arrest due to other underlying condition |
|
I46.9 |
Cardiac arrest, cause unspecified |
| 426.12 | Mobitz (type) ii atrioventricular block |
| I44.1 | Atrioventricular block, second degree |
| V45.02 | Automatic implantable cardiac defibrillator in situ |
| Z95.810 | Automatic implantable cardiac defibrillator in situ |
| 426.82 | Long qt syndrome |
| I45.81 | Long qt syndrome |
| V45.01 | Cardiac pacemaker in situ |
| Z95.0 | Presence of cardiac pacemaker |
| 996.04 | Mechanical complication of automatic implantable cardiac defibrillator |
| T82.110A | Breakdown (mechanical) of cardiac electrode, initial encounter |
| T82.111A | Breakdown (mechanical) of cardiac pulse generator (battery), initial encounter |
|
T82.120A |
Displacement of cardiac electrode, initial encounter |
|
T82.121A |
Displacement of cardiac pulse generator (battery), initial encounter |
|
T82.190A |
Other mechanical complication of cardiac electrode, initial encounter |
|
T82.191A |
Other mechanical complication of cardiac pulse generator (battery), initial encounter |