I45.3
BillableTrifascicular block
Trifascicular block
Coding Notes
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)
I45.0Right fascicular block
I45.1Other and unspecified right bundle-branch block
I45.2Bifascicular block
I45.4Nonspecific intraventricular block
I45.5Other specified heart block
I45.6Pre-excitation syndrome
I45.8Other specified conduction disorders
I45.9Conduction disorder, unspecified
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(13)
SNOMED CT
Clinical Terms
- Trifascicular block (disorder)
- Right bundle branch block with left bundle branch block
- Right bundle branch block with left main stem bundle branch block
- Multifascicular block
- Trifascicular block on electrocardiogram
Frequently Asked Questions
What is the ICD-10 code for trifascicular block?
The ICD-10-CM code for trifascicular block is I45.3. The full clinical description is "Trifascicular block". I45.3 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I45.3 mean?
ICD-10-CM code I45.3 represents “Trifascicular block”. 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 I45.3 a billable code?
Yes, I45.3 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I45.3 in?
I45.3 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What SNOMED CT codes does I45.3 map to?
I45.3 maps to 3 SNOMED CT concepts: 86014007, 32758004, 445309007. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I45.3?
I45.3 is linked to 1 UMLS Concept Unique Identifier: C0155707. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I45.3 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like trifascicular block 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 I45.3?
I45.3 maps to the ICD-11 code: BC63.Z (Conduction disorders, 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.