I45.9
BillableConduction disorder, unspecified
Conduction disorder, unspecified
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Heart block NOS
- Stokes-Adams syndrome
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
I45.3Trifascicular block
I45.4Nonspecific intraventricular block
I45.5Other specified heart block
I45.6Pre-excitation syndrome
I45.8Other specified conduction disorders
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(175)
SNOMED CT
- Pacemaker rhythm10370003
- Rhythm from artificial pacing10370003
- Abnormal cardiac conduction36358004
- Paroxysmal atrial tachycardia with block39357005
- Malfunction from artificial pacing40669004
- Conduction disorder of the heart44808001
- Disorder of heart conduction44808001
- ECG: heart block164898000
- EKG: heart block164898000
- Electrocardiographic heart block164898000
- HB - Heart block233916004
- Heart block233916004
- Aberrantly conducted complex251183004
- Stokes-Adams attack271547004
- Congenital conduction defect315027009
- Heart block caused by drug443478002
- Atrial septal defect, atrioventricular conduction defect syndrome725145002
- Microcephalus, cerebellar hypoplasia, cardiac conduction defect syndrome764732004
- Microcephaly, cerebellar hypoplasia, congenital heart conduction defect syndrome764732004
- Zaki Gleeson syndrome764732004
- Cardiac syncope788877005
- Cerebellar ataxia, brain abnormalities, cardiac conduction defects syndrome1303586006
- Neurodevelopmental delay, hypotonia, cerebellar ataxia, cardiac conduction defects syndrome1303586006
- Neurodevelopmental delay, hypotonia, cerebellar atrophy, cardiac conduction defects syndrome1303586006
UMLS
- Adam Stokes AttacksC0001396
- Adam-Stokes AttacksC0001396
- Adam-Stokes syndromeC0001396
- Adams Stokes SyndromeC0001396
- Adams Stokes attackC0001396
- Adams Stokes syndromeC0001396
- Adams-Stokes SyndromeC0001396
- Adams-Stokes syndromeC0001396
- Attacks, Adam-StokesC0001396
- Attacks, Stokes-AdamsC0001396
- Morgagni's diseaseC0001396
- Morgagni-Adam's Stokes syndromeC0001396
- Spens' syndromeC0001396
- Stokes Adams AttacksC0001396
- Stokes Adams SyndromeC0001396
- Stokes Adams syndromeC0001396
- Stokes-Adams AttacksC0001396
- Stokes-Adams SyndromeC0001396
- Stokes-Adams attackC0001396
- Stokes-Adams attack (disorder)C0001396
- Stokes-Adams syndromeC0001396
- Syndrome Adams-StokesC0001396
- Syndrome Stokes-AdamsC0001396
- Syndrome, Adams-StokesC0001396
- Syndrome, Stokes-AdamsC0001396
- adam attack stokesC0001396
- adam-stokes syndromeC0001396
- adams attack stokeC0001396
- adams stoke syndromeC0001396
- adams stokes attackC0001396
- adams stokes syndromeC0001396
- adams-stokes syndromeC0001396
- morgagni's diseaseC0001396
- stoke adams syndromeC0001396
- stokes adams attacksC0001396
- stokes adams syndromeC0001396
- stokes-adams attackC0001396
- stokes-adams attacksC0001396
- stokes-adams syndromeC0001396
- Block heartC0018794
- Block, HeartC0018794
- Blocks, HeartC0018794
- Conduction blockC0018794
- HB - Heart blockC0018794
- Heart BlockC0018794
- Heart BlocksC0018794
- Heart blockC0018794
- Heart block (disorder)C0018794
- Heart block NOSC0018794
- block heartC0018794
- blockage heartC0018794
- blockages heartC0018794
- blocked heartC0018794
- blocks heartC0018794
- heart blockC0018794
- heart blockageC0018794
- heart blocksC0018794
- CARDIAC CONDUCTION DEFECTC0264886
- Cardiac Conduction DisorderC0264886
- Cardiac Conduction System DiseaseC0264886
- Cardiac Conduction System DiseasesC0264886
- Cardiac conduction defectsC0264886
- Cardiac conduction disordersC0264886
- Conduction defectsC0264886
- Conduction disorderC0264886
- Conduction disorder NOSC0264886
- Conduction disorder of the heartC0264886
- Conduction disorder of the heart (disorder)C0264886
- Conduction disorder, unspecifiedC0264886
- Conduction disordersC0264886
- Disorder of heart conductionC0264886
- Heart Conduction DisorderC0264886
- cardiac conduction defectsC0264886
- conduction defectC0264886
- conduction defectsC0264886
- conduction disorderC0264886
- conduction disordersC0264886
- conductions defectC0264886
Clinical Terms
- Adams Stokes syndrome
- Conduction disorders
- conduction defects
- Stokes-Adams attack
- Stokes Adams Syndrome
- Stokes-Adams Attacks
- Aberrantly conducted complex
- CARDIAC CONDUCTION DEFECT
- Syndrome, Adams-Stokes
- Block heart
- stokes adams attacks
- Pacemaker rhythm
- ECG: heart block
- Abnormal cardiac conduction
- Paroxysmal atrial tachycardia with block
- Adams-Stokes Syndrome
- Adams Stokes attack
- Attacks, Stokes-Adams
- Cardiac conduction disorders
- adams stoke syndrome
- Neurodevelopmental delay, hypotonia, cerebellar ataxia, cardiac conduction defects syndrome
- Conduction disorder of the heart (disorder)
- blocked heart
- Microcephaly, cerebellar hypoplasia, congenital heart conduction defect syndrome
- Adam-Stokes syndrome
- Heart block (disorder)
- conduction defect
- blockage heart
- EKG: heart block
- Heart Block
- Congenital conduction defect
- blockages heart
- Heart block NOS
- Disorder of heart conduction
- Conduction disorder of the heart
- Conduction block
- Conduction disorder NOS
- Stokes-Adams Syndrome
- heart blockage
- Syndrome, Stokes-Adams
- Morgagni-Adam's Stokes syndrome
- Syndrome Adams-Stokes
- Cerebellar ataxia, brain abnormalities, cardiac conduction defects syndrome
- Stokes-Adams attack (disorder)
- morgagni's disease
- heart blocks
- Cardiac Conduction System Diseases
- Spens' syndrome
- Block, Heart
- Cardiac conduction defects
- Cardiac Conduction System Disease
- adam attack stokes
- Heart Conduction Disorder
- Neurodevelopmental delay, hypotonia, cerebellar atrophy, cardiac conduction defects syndrome
- Cardiac syncope
- Blocks, Heart
- adams attack stoke
- Rhythm from artificial pacing
- Malfunction from artificial pacing
- Cardiac Conduction Disorder
- blocks heart
- stoke adams syndrome
- Zaki Gleeson syndrome
- Electrocardiographic heart block
- HB - Heart block
- Heart block caused by drug
- Microcephalus, cerebellar hypoplasia, cardiac conduction defect syndrome
- Adam-Stokes Attacks
- conductions defect
- Attacks, Adam-Stokes
- Syndrome Stokes-Adams
- Adam Stokes Attacks
- Atrial septal defect, atrioventricular conduction defect syndrome
Frequently Asked Questions
What is the ICD-10 code for conduction disorder, unspecified?
The ICD-10-CM code for conduction disorder, unspecified is I45.9. The full clinical description is "Conduction disorder, unspecified". I45.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I45.9 mean?
ICD-10-CM code I45.9 represents “Conduction disorder, 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 I45.9 a billable code?
Yes, I45.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I45.9 in?
I45.9 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What SNOMED CT codes does I45.9 map to?
I45.9 maps to 15 SNOMED CT concepts: 251183004, 36358004, 725145002, 788877005, 1303586006, and 10 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I45.9?
I45.9 is linked to 3 UMLS Concept Unique Identifiers: C0001396, C0018794, C0264886. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I45.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like conduction disorder, 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 I45.9?
I45.9 maps to the ICD-11 code: BC63.Z (Conduction disorders, unspecified).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
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.