ICD-10-CM
Diseases of the circulatory system
Chapter 9, I00-I99. CDC FY2027 file dated June 16, 2026.
License: a US government work, in the public domain (Public Domain Mark 1.0).
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Categories
80 categories in this chapter. Open one, or page through every code below.
- I00Rheumatic fever without heart involvement
- I01Rheumatic fever with heart involvement
- I02Rheumatic chorea
- I05Rheumatic mitral valve diseases
- I06Rheumatic aortic valve diseases
- I07Rheumatic tricuspid valve diseases
- I08Multiple valve diseases
- I09Other rheumatic heart diseases
- I10Essential (primary) hypertension
- I11Hypertensive heart disease
- I12Hypertensive chronic kidney disease
- I13Hypertensive heart and chronic kidney disease
- I15Secondary hypertension
- I16Hypertensive crisis
- I1AOther hypertension
- I20Angina pectoris
- I21Acute myocardial infarction
- I22Subsequent STEMI and NSTEMI mocard infrc
- I23Certain current comp fol STEMI and NSTEMI mocard infrc <= 28 day
- I24Other acute ischemic heart diseases
- I25Chronic ischemic heart disease
- I26Pulmonary embolism
- I27Other pulmonary heart diseases
- I28Other diseases of pulmonary vessels
- I30Acute pericarditis
- I31Other diseases of pericardium
- I32Pericarditis in diseases classified elsewhere
- I33Acute and subacute endocarditis
- I34Nonrheumatic mitral valve disorders
- I35Nonrheumatic aortic valve disorders
- I36Nonrheumatic tricuspid valve disorders
- I37Nonrheumatic pulmonary valve disorders
- I38Endocarditis, valve unspecified
- I39Endocarditis and heart valve disord in dis classd elswhr
- I40Acute myocarditis
- I41Myocarditis in diseases classified elsewhere
44 more categories are in this chapter. Type a code or a term to open one.
Codes
A header groups codes and is not billed. A billable code is one you can report. Listed second marks a billable manifestation code (its CDC title says it is "classified elsewhere"): code the underlying disease or condition first, then this code.
281 to 320 of 1,807
- I41Myocarditis in diseases classified elsewhereListed second
- I42CardiomyopathyHeader
- I42.0Dilated cardiomyopathyHeader
- I42.00Dilated cardiomyopathy, unspecifiedBillable
- I42.01Familial-genetic dilated cardiomyopathyBillable
- I42.09Other dilated cardiomyopathyBillable
- I42.1Obstructive hypertrophic cardiomyopathyBillable
- I42.2Other hypertrophic cardiomyopathyBillable
- I42.3Endomyocardial (eosinophilic) diseaseBillable
- I42.4Endocardial fibroelastosisBillable
- I42.5Other restrictive cardiomyopathyBillable
- I42.6Alcoholic cardiomyopathyBillable
- I42.7Cardiomyopathy due to drug and external agentBillable
- I42.8Other cardiomyopathiesHeader
- I42.81Arrhythmogenic cardiomyopathyBillable
- I42.89Other cardiomyopathies not elsewhere classifiedBillable
- I42.9Cardiomyopathy, unspecifiedBillable
- I43Cardiomyopathy in diseases classified elsewhereListed second
- I44Atrioventricular and left bundle-branch blockHeader
- I44.0Atrioventricular block, first degreeBillable
- I44.1Atrioventricular block, second degreeBillable
- I44.2Atrioventricular block, completeBillable
- I44.3Other and unspecified atrioventricular blockHeader
- I44.30Unspecified atrioventricular blockBillable
- I44.39Other atrioventricular blockBillable
- I44.4Left anterior fascicular blockBillable
- I44.5Left posterior fascicular blockBillable
- I44.6Other and unspecified fascicular blockHeader
- I44.60Unspecified fascicular blockBillable
- I44.69Other fascicular blockBillable
- I44.7Left bundle-branch block, unspecifiedBillable
- I45Other conduction disordersHeader
- I45.0Right fascicular blockBillable
- I45.1Other and unspecified right bundle-branch blockHeader
- I45.10Unspecified right bundle-branch blockBillable
- I45.19Other right bundle-branch blockBillable
- I45.2Bifascicular blockBillable
- I45.3Trifascicular blockBillable
- I45.4Nonspecific intraventricular blockBillable
- I45.5Other specified heart blockBillable