I51.4
BillableMyocarditis, unspecified
Myocarditis, unspecified
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Chronic (interstitial) myocarditis
- Myocardial fibrosis
- Myocarditis NOS
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •systemic connective tissue disordersM30-M36
- •transient cerebral ischemic attacks and related syndromesG45
Related Codes(8)
I51.0Cardiac septal defect, acquired
I51.1Rupture of chordae tendineae, not elsewhere classified
I51.2Rupture of papillary muscle, not elsewhere classified
I51.3Intracardiac thrombosis, not elsewhere classified
I51.5Myocardial degeneration
I51.7Cardiomegaly
I51.8Other ill-defined heart diseases
I51.9Heart disease, unspecified
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(84)
SNOMED CT
- Senile myocarditis279001
- Fibroid myocarditis488007
- Interstitial myocarditis37925008
- Chronic interstitial myocarditis45093008
- Acute myocarditis46701001
- Myocardial inflammation50920009
- Myocarditis50920009
- Myocarditis caused by physical agent79096004
- Myocarditis caused by radiation88782004
- Acute HIV infection111880001
- Acute human immunodeficiency virus infection111880001
- Acute human immunodeficiency virus seroconversion illness111880001
- Myocarditis with AIDS (acquired immunodeficiency syndrome)421929001
- Myocarditis with acquired immunodeficiency syndrome421929001
- Lymphocytic myocarditis427443009
- Heart disease caused by ionising radiation430401005
- Heart disease caused by ionizing radiation430401005
- HFpEF - heart failure with preserved ejection fraction446221000
- Heart failure with normal ejection fraction446221000
- Heart failure with preserved ejection fraction446221000
- HFrEF - heart failure with reduced ejection fraction703272007
- Heart failure with reduced ejection fraction703272007
- Heart failure with reduced ejection fraction due to myocarditis703274008
- Heart disease co-occurrent with human immunodeficiency virus infection713298006
- Myocarditis co-occurrent with human immunodeficiency virus infection713318009
- Left ventricular failure with normal ejection fraction due to myocarditis1204204003
- Myocardial dysfunction with sepsis1204460007
- Sepsis-associated myocardial dysfunction1204460007
- Chronic myocarditis451241000124108
UMLS
- Cardiac FibrosisC0151654
- Cardiac fibrosisC0151654
- Fibrosis myocardialC0151654
- Myocardial FibrosisC0151654
- Myocardial fibrosisC0151654
- fibrosis myocardialC0151654
- myocardial fibrosisC0151654
- Chronic (interstitial) myocarditisC0264852
- Chronic interstitial myocarditisC0264852
- Chronic interstitial myocarditis (disorder)C0264852
- Inflammation of heart muscleC0027059
- Myocardial inflammationC0027059
- MyocarditidesC0027059
- MyocarditisC0027059
- Myocarditis (disorder)C0027059
- Myocarditis NOSC0027059
- Myocarditis, unspecifiedC0027059
- myocarditisC0027059
Clinical Terms
- Heart failure with reduced ejection fraction due to myocarditis
- Myocarditis with AIDS (acquired immunodeficiency syndrome)
- Fibroid myocarditis
- Inflammation of heart muscle
- Heart disease caused by ionizing radiation
- Myocardial inflammation
- Myocarditides
- Myocarditis caused by radiation
- fibrosis myocardial
- Acute human immunodeficiency virus infection
- Senile myocarditis
- myocardial fibrosis
- Chronic interstitial myocarditis
- Acute human immunodeficiency virus seroconversion illness
- Acute HIV infection
- Cardiac fibrosis
- Myocarditis NOS
- Heart disease caused by ionising radiation
- Myocarditis (disorder)
- Lymphocytic myocarditis
- Heart disease co-occurrent with human immunodeficiency virus infection
- Heart failure with reduced ejection fraction
- HFrEF - heart failure with reduced ejection fraction
- Heart failure with preserved ejection fraction
- Sepsis-associated myocardial dysfunction
- Left ventricular failure with normal ejection fraction due to myocarditis
- Interstitial myocarditis
- Myocarditis with acquired immunodeficiency syndrome
- HFpEF - heart failure with preserved ejection fraction
- Myocardial dysfunction with sepsis
- Myocarditis caused by physical agent
- Myocarditis co-occurrent with human immunodeficiency virus infection
- Chronic (interstitial) myocarditis
- Chronic myocarditis
- Chronic interstitial myocarditis (disorder)
- Acute myocarditis
- Heart failure with normal ejection fraction
Frequently Asked Questions
What is the ICD-10 code for myocarditis, unspecified?
The ICD-10-CM code for myocarditis, unspecified is I51.4. The full clinical description is "Myocarditis, unspecified". I51.4 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I51.4 mean?
ICD-10-CM code I51.4 represents “Myocarditis, unspecified”. It is classified under Chapter 9: Diseases of the Circulatory System and is a billable/specific code that can be used on a claim.
Is I51.4 a billable code?
Yes, I51.4 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I51.4 in?
I51.4 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I51.4?
I51.4 has Excludes1 notes indicating codes that cannot be used together with it, including: any condition in I51.4-I51.9 due to hypertension (I11.-); any condition in I51.4-I51.9 due to hypertension and chronic kidney disease (I13.-); heart disease specified as rheumatic (I00-I09); and 1 more.
What SNOMED CT codes does I51.4 map to?
I51.4 maps to 20 SNOMED CT concepts: 111880001, 46701001, 45093008, 451241000124108, 488007, and 15 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I51.4?
I51.4 is linked to 3 UMLS Concept Unique Identifiers: C0151654, C0264852, C0027059. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I51.4 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like myocarditis, unspecified affect a person's functioning: body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of I51.4?
I51.4 maps to the ICD-11 code: BC42.Z (Myocarditis, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.