2027 ICD-10-CM Diagnosis Code I51.89Other ill-defined heart diseases
ICD-10-CM Codes›I00–I99›I30-I5A›I51
- Billable — Valid for Submission
- Chronic Condition
ICD-10-CM I51.89
I51.89 is a billable ICD-10-CM diagnosis code for other ill-defined heart diseases. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 302 through 303. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other and ill-defined heart disease.
Code Identity
ICD-10-CM Code
I51.89
Billable Status
Yes — Valid for Submission
Code Describes
Other ill-defined heart diseases
Short Description
Other ill-defined heart diseases
Same as the full description in the CMS dataset.
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abnormality of atrial septum
- Abnormality of atrioventricular valve
- Abnormality of left atrial appendage
- Abnormality of right atrial appendage
- Abnormality of tricuspid subvalvar apparatus
- Abscess at site of systemic to pulmonary arterial shunt
- Abscess of aorta
- Abscess of aortic root
- Abscess of aortic valve
- Abscess of cardiac septum
- Abscess of cardiovascular structure of trunk
- Abscess of common atrioventricular valve
- Abscess of heart
- Abscess of left ventricular wall
- Abscess of right ventricular wall
- Abscess of truncal valve
- Acquired abnormality of atrioventricular following repair of atrioventricular septal defect
- Acquired abnormality of atrium
- Acquired abnormality of cardiac ventricle
- Acquired abnormality of left cardiac ventricle
- Acquired abnormality of right atrium
- Acquired abnormality of right cardiac ventricle
- Acquired atrial septal defect
- Acquired complete obstruction of aortic outflow
- Acquired excessive restriction of interatrial communication
- Acquired fistula of esophagus
- Acquired left ventricular outflow tract obstruction
- Acquired narrowing of constructed cardiac intraventricular tunnel
- Acquired right ventricular outflow tract obstruction
- Acquired stenosis of subpulmonary area
- Acquired subaortic stenosis
- Acquired subpulmonary stenosis associated with functionally univentricular heart
- Acquired subpulmonary stenosis due to restrictive ventricular defect associated with functionally univentricular heart
- Acute/subacute carditis
- Akinesis of apical anterior segment of left cardiac ventricle
- Akinesis of apical inferior segment of left cardiac ventricle
- Akinesis of apical lateral segment of left cardiac ventricle
- Akinesis of apical septal segment of left cardiac ventricle
- Akinesis of basal anterior segment of left cardiac ventricle
- Akinesis of basal anterolateral segment of left cardiac ventricle
- Akinesis of basal anteroseptal segment of left cardiac ventricle
- Akinesis of basal inferior segment of left cardiac ventricle
- Akinesis of basal inferolateral segment of left cardiac ventricle
- Akinesis of basal inferoseptal segment of left cardiac ventricle
- Akinesis of mid anterior segment of left cardiac ventricle
- Akinesis of mid anterolateral segment of left cardiac ventricle
- Akinesis of mid anteroseptal segment of left cardiac ventricle
- Akinesis of mid inferior segment of left cardiac ventricle
- Akinesis of mid inferolateral segment of left cardiac ventricle
- Akinesis of mid inferoseptal segment of left cardiac ventricle
- Akinesis of myocardium of anterior region of left ventricle
- Akinesis of myocardium of anterolateral region of left ventricle
- Akinesis of myocardium of anteroseptal region of left ventricle
- Akinesis of myocardium of apex of left ventricle
- Akinesis of myocardium of inferior region of left ventricle
- Akinesis of myocardium of inferolateral region of left ventricle
- Akinesis of myocardium of inferoseptal region of left ventricle
- Akinesis of myocardium of lateral region of left ventricle
- Akinesis of myocardium of septal region of left ventricle
- Akinetic right ventricular wall
- Annular abscess of aortic root
- Anomalous bands of heart
- Atrial cardiopathy
- Atrial erosion caused by implanted device following atrial operation
- Atrial thrombosis
- Atrioesophageal fistula due to radiofrequency ablation
- Bacterial infectious disease of heart
- Cardiac abnormality due to heart abscess
- Cardiac dyskinesia
- Cardiac polyp
- Cardiac volume overload
- Cardiotoxicity
- Carditis
- Chronic bacterial endocarditis
- Chronic endocarditis
- Dilatation of common atrioventricular valve annulus
- Dilatation of left atrioventricular valve annulus
- Dilatation of right atrioventricular valve annulus
- Disorder of atrium following procedure
- Disorder of cardiac function
- Disorder of cardiac ventricle
- Disorder of cardiac ventricle following procedure
- Disorder of endocardium
- Disorder of left atrium
- Disorder of left atrium as complication of procedure
- Disorder of left cardiac ventricle
- Disorder of right atrium
- Disorder of right atrium as complication of procedure
- Dysfunction of left atrioventricular valve papillary muscle
- Dysfunction of papillary muscle
- Dysfunction of right atrioventricular valve papillary muscle
- Dysfunction of right cardiac ventricle
- Dysfunction of tricuspid valve papillary muscle
- Erosion of left atrium due to and following implantation of device
- Erosion of right atrium due to and following implantation of device
- Excessive restriction of interatrial communication as complication of procedure
- Foreign body in heart
- Foreign body of cardiovascular structure
- Functionally univentricular heart
- Global hypokinesis of left cardiac ventricle
- Hemodynamic instability
- Hyperkinetic heart disease
- Hyperkinetic right ventricular wall
- Hyperkinetic ventricular wall
- Hypervolemia
- Hypokinesis of apical anterior segment of left cardiac ventricle
- Hypokinesis of apical inferior segment of left cardiac ventricle
- Hypokinesis of apical lateral segment of left cardiac ventricle
- Hypokinesis of apical septal segment of left cardiac ventricle
- Hypokinesis of basal anterior segment of left cardiac ventricle
- Hypokinesis of basal anterolateral segment of left cardiac ventricle
- Hypokinesis of basal anteroseptal segment of left cardiac ventricle
- Hypokinesis of basal inferior segment of left cardiac ventricle
- Hypokinesis of basal inferolateral segment of left cardiac ventricle
- Hypokinesis of basal inferoseptal segment of left cardiac ventricle
- Hypokinesis of mid anterior segment of left cardiac ventricle
- Hypokinesis of mid anterolateral segment of left cardiac ventricle
- Hypokinesis of mid anteroseptal segment of left cardiac ventricle
- Hypokinesis of mid inferior segment of left cardiac ventricle
- Hypokinesis of mid inferolateral segment of left cardiac ventricle
- Hypokinesis of mid inferoseptal segment of left cardiac ventricle
- Hypokinesis of myocardium of anterior region of left ventricle
- Hypokinesis of myocardium of anterolateral region of left ventricle
- Hypokinesis of myocardium of anteroseptal region of left ventricle
- Hypokinesis of myocardium of apex of left ventricle
- Hypokinesis of myocardium of inferior region of left ventricle
- Hypokinesis of myocardium of inferolateral region of left ventricle
- Hypokinesis of myocardium of inferoseptal region of left ventricle
- Hypokinesis of myocardium of lateral region of left ventricle
- Hypokinesis of myocardium of septal region of left ventricle
- Hypokinesis of region of myocardium of left ventricle
- Hypokinetic right ventricular wall
- Incompetence of papillary muscle
- Incoordination of papillary muscle
- Infectious disease of heart
- Interventricular cardiac septal hypertrophy
- Interventricular dyssynchrony
- Invasive aspergillosis
- Invasive cardiac aspergillosis
- Left heart obstructive lesion
- Left ventricular abnormality
- Left ventricular mass
- Left ventricular systolic dysfunction
- Left ventricular wall akinetic
- Left ventricular wall dyskinetic
- Left ventricular wall hypokinetic
- Mild hypokinesis of cardiac wall
- Mild left ventricular systolic dysfunction
- Mild right ventricular systolic dysfunction
- Mitral papillary muscle abnormality
- Mitral papillary muscle dysfunction
- Moderate hypokinesis of cardiac wall
- Moderate left ventricular systolic dysfunction
- Moderate right ventricular systolic dysfunction
- Outflow tract abnormality in solitary indeterminate ventricle
- Outflow tract obstruction in solitary indeterminate ventricle
- Pancarditis
- Papillary muscle atrophy
- Papillary muscle degeneration
- Papillary muscle disorder
- Perforation of atrium following procedure
- Perforation of left atrium due to and following procedure
- Perforation of right atrium due to and following procedure
- Postcapillary pulmonary hypertension
- Postprocedural left ventricular outflow tract obstruction
- Postprocedural right ventricular outflow tract obstruction
- Pulmonary hypertension due to left heart disease
- Restrictive interatrial communication
- Right atrial abnormality
- Right ventricle-dependent coronary circulation
- Right ventricular abnormality
- Right ventricular diastolic dysfunction
- Right ventricular dysfunction due to disorder of left ventricle
- Right ventricular function - finding
- Right ventricular mass
- Right ventricular outflow tract obstruction due to foreign body
- Right ventricular systolic dysfunction
- Right ventricular wall motion - finding
- Scarring of papillary muscle
- Severe hypokinesis of cardiac wall
- Severe left ventricular systolic dysfunction
- Severe right ventricular systolic dysfunction
- Sinistrocardia
- Structural abnormality of cardiac atrium
- Structural abnormality of cardiac ventricle
- Structural abnormality of endocardium
- Structural abnormality of trabeculae carnea of left ventricle
- Structural abnormality of trabeculae carnea of right ventricle
- Structural abnormality of trabeculae carneae cordis
- Structural abnormality of ventricular myocardium
- Structural disorder of heart
- Subaortic outflow tract obstruction in solitary indeterminate ventricle
- Subneopulmonary valve stenosis
- Subpulmonary outflow tract obstruction in solitary indeterminate ventricle
- Subpulmonary stenosis
- Subpulmonary stenosis as complication of procedure
- Subpulmonary stenosis associated with functionally univentricular heart as complication of procedure
- Thickened atrial septum
- Thin ventricular septum
- Thrombus of right atrium
- Tricuspid papillary muscle abnormality
- Ventricular asynergy
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to I51.89: its own notes plus those printed at I51 and Chapter 9. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Carditis (acute)(chronic)
- Pancarditis (acute)(chronic)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
ventricular I51.89
Disease, diseased See Also: Syndrome;
functional I51.89
Disorder (of) See Also: Disease;
cardiac, functional I51.89
heart I51.89
papillary muscle I51.89
Hyperkinesia, hyperkinetic (disease) (reaction) (syndrome) (childhood) (adolescence) See Also: Disorder, attention-deficit hyperactivity;
heart I51.89
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
CCSR CIR015
Other and ill-defined heart disease
Default principal diagnosis: inpatient Yes · outpatient Yes
Patient EducationClinical
Heart Diseases
Heart disease is a general term that includes many types of heart problems. It's a type of cardiovascular disease, which means heart and blood vessel disease.
The full article covers:
- What is heart disease?
- What are the types of heart disease?
- What causes heart diseases?
- Who is more likely to develop heart diseases?
- What are the symptoms of heart disease?
- How are heart diseases diagnosed?
- What are the treatments for heart disease?
- Can heart diseases be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert I51.89 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.
Questions About I51.89Overview
What is the ICD-10 code for other ill-defined heart diseases?
The ICD-10-CM code for other ill-defined heart diseases is I51.89 (sometimes written as I5189). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is I51.89 (Other ill-defined heart diseases) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other ill-defined heart diseases on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does I51.89 group to?
When other ill-defined heart diseases is the principal diagnosis on an inpatient stay, it groups to MS-DRG 302, 303, with relative weights from 0.6610 to 1.1993 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of I51.89?
Under the General Equivalence Mappings, other ill-defined heart diseases converts to ICD-9-CM 429.81 (papillary muscle dis NEC), 429.82 (hyperkinetic heart dis), and 429.89 (ill-defined hrt dis NEC). The mapping is approximate, so confirm the match fits the documentation.
