I40.1
BillableIsolated myocarditis
Isolated myocarditis
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Fiedler's myocarditis
- Giant cell myocarditis
- Idiopathic myocarditis
Includes
Conditions included under this code
- subacute myocarditis
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(3)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(26)
SNOMED CT
UMLS
- Fiedler's myocarditisC0155689
- Idiopathic myocarditisC0155689
- Idiopathic myocarditis (disorder)C0155689
- Isolated (Fiedler's) myocarditisC0155689
- Isolated (Fiedler's) myocarditis (disorder)C0155689
- Isolated myocarditisC0155689
- Giant Cell MyocarditisC0264856
- Giant cell myocarditisC0264856
- Giant cell myocarditis (disorder)C0264856
Clinical Terms
- Giant Cell Myocarditis
- Isolated diffuse granulomatous myocarditis
- Isolated (Fiedler's) myocarditis
- Isolated (Fiedler's) myocarditis (disorder)
- Fiedler's myocarditis
- Nonspecific granulomatous myocarditis
- Giant cell myocarditis (disorder)
- Eosinophilic myocarditis
- Idiopathic myocarditis (disorder)
- Idiopathic myocarditis
Frequently Asked Questions
What is the ICD-10 code for isolated myocarditis?
The ICD-10-CM code for isolated myocarditis is I40.1. The full clinical description is "Isolated myocarditis". I40.1 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I40.1 mean?
ICD-10-CM code I40.1 represents “Isolated myocarditis”. 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 I40.1 a billable code?
Yes, I40.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I40.1 in?
I40.1 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I40.1?
I40.1 has Excludes1 notes indicating codes that cannot be used together with it, including: acute rheumatic myocarditis (I01.2).
What SNOMED CT codes does I40.1 map to?
I40.1 maps to 5 SNOMED CT concepts: 427372006, 91025000, 60812006, 266238009, 55482007. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I40.1?
I40.1 is linked to 2 UMLS Concept Unique Identifiers: C0155689, C0264856. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I40.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like isolated myocarditis 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 I40.1?
I40.1 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.