I49.8
BillableOther specified cardiac arrhythmias
Other specified cardiac arrhythmias
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Brugada syndrome
- Coronary sinus rhythm disorder
- Ectopic rhythm disorder
- Nodal rhythm disorder
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
- •bradycardia NOSR00.1
- •neonatal dysrhythmiaP29.1
- •sinoatrial bradycardiaR00.1
- •sinus bradycardiaR00.1
- •vagal bradycardiaR00.1
Code First
The underlying condition must be sequenced before this code
- cardiac arrhythmia complicating:
- •abortion or ectopic or molar pregnancy,O00-O07, O08.8
- •obstetric surgery and proceduresO75.4
Related Codes(7)
I49.0Ventricular fibrillation and flutter
I49.1Atrial premature depolarization
I49.2Junctional premature depolarization
I49.3Ventricular premature depolarization
I49.4Other and unspecified premature depolarization
I49.5Sick sinus syndrome
I49.9Cardiac arrhythmia, unspecified
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(209)
SNOMED CT
- AV junctional rhythm11849007
- Atrioventricular junctional rhythm11849007
- Junctional rhythm11849007
- Nodal rhythm11849007
- Atrial arrhythmia17366009
- Congenital absence of proximal portion of limb22841008
- Phocomelia22841008
- Phocomelic dwarf22841008
- Ectopic rhythm29320008
- Sick sinus syndrome36083008
- Embryocardia46220003
- Tic-tac rhythm46220003
- Left atrial rhythm49760004
- Nodal arrhythmia71792006
- Nodal rhythm disorder71792006
- Sinus arrhythmia71792006
- Palpitations80313002
- AV node arrhythmia88412007
- Atrio-ventricular node arrhythmia88412007
- Atrial rhythm106068003
- Optic nerve finding106152006
- Second cranial nerve finding106152006
- Fluttering heart161969004
- Palpitations - fluttering161969004
- Wandering atrial pacemaker195101003
- AV (atrioventricular) nodal re-entry tachycardia233896004
- AVNRT - atrioventricular nodal re-entrant tachycardia233896004
- AVRNT - atrioventricular re-entrant nodal tachycardia233896004
- Atrioventricular nodal re-entry tachycardia233896004
- Re-entrant atrioventricular node tachycardia233896004
- AVRT - Atrioventricular re-entrant tachycardia233897008
- Re-entrant atrioventricular tachycardia233897008
- Orthodromic atrioventricular re-entrant tachycardia233898003
- Antidromic atrioventricular re-entrant tachycardia233899006
- Chronic intestinal pseudo-obstruction235828008
- Marked sinus arrhythmia251152003
- Slow ventricular response251161003
- AV-junctional (nodal) bradycardia251162005
- Atrio-ventricular-junctional (nodal) bradycardia251162005
- Nodal escape bradycardia251162005
- AV junctional (nodal) arrest251163000
- Atrio-ventricular junctional (nodal) arrest251163000
- Ventricular escape complex251186007
- Atrial escape complex251187003
- Finding related to awareness of heart beat366182005
- Brugada syndrome418818005
- Bradyarrhythmia421869004
- PEHO (progressive encephalopathy with edema, hypsarrhythmia and optic atrophy) syndrome442511009
- PEHO (progressive encephalopathy with oedema, hypsarrhythmia and optic atrophy) syndrome442511009
- PEHO syndrome442511009
- Progressive encephalopathy with edema, hypsarrhythmia and optic atrophy syndrome442511009
- Progressive encephalopathy with oedema, hypsarrhythmia and optic atrophy syndrome442511009
- Familial short QT syndrome698272007
- Genetic short QT syndrome698272007
- Short QT syndrome698272007
- Postoperative fluttering heart709065005
- Phocomelia, ectrodactyly, deafness and sinus arrhythmia syndrome715506001
- Stoll Lévy Francfort syndrome715506001
- CAID (chronic atrial and intestinal dysrhythmia) syndrome720507006
- Chronic atrial and intestinal dysrhythmia720507006
- Congenital conductive hearing loss737344003
- Supraventricular bradyarrhythmia762534000
- Ankyrin-B syndrome764457005
- Cardiac arrhythmia ankyrin-B related764457005
- PEHO-like syndrome770678005
- PEHOL (progressive encephalopathy with edema, hypsarrhythmia, and optic atrophy-like) syndrome770678005
- PEHOL (progressive encephalopathy with oedema, hypsarrhythmia, and optic atrophy-like) syndrome770678005
- Progressive encephalopathy with edema, hypsarrhythmia, and optic atrophy-like syndrome770678005
- Progressive encephalopathy with oedema, hypsarrhythmia, and optic atrophy-like syndrome770678005
- Acquired Brugada syndrome789693005
- Stable bradyarrhythmia1296782003
UMLS
- Arrhythmia nodalC0264893
- Arrhythmia nodal (NOS)C0264893
- Nodal ArrhythmiaC0264893
- Nodal Arrhythmia by ECG FindingC0264893
- Nodal Arrhythmia by EKG FindingC0264893
- Nodal arrhythmiaC0264893
- Nodal rhythm disorderC0264893
- Nodal rhythm disorder (disorder)C0264893
- Brugada SyndromeC1142166
- Brugada syndromeC1142166
- Brugada syndrome (disorder)C1142166
- Idiopathic ventricular fibrillation, Brugada typeC1142166
- RIGHT BUNDLE BRANCH BLOCK, ST SEGMENT ELEVATION, AND SUDDEN DEATH SYNDROMEC1142166
- Right Bundle Branch Block, ST Segment Elevation, and Sudden Death SyndromeC1142166
- SUDDEN UNEXPLAINED NOCTURNAL DEATH SYNDROMEC1142166
- SUDSC1142166
- SUNDSC1142166
- Sudden Unexplained Death SyndromeC1142166
- Sudden Unexplained Nocturnal Death SyndromeC1142166
- Sudden Unexplained Nocturnal Death Syndrome (SUNDS)C1142166
- Sudden unexplained death syndromeC1142166
- brugada syndromeC1142166
- brugadas syndromeC1142166
- Coronary sinus rhythm disorderC0428908
- Dysfunction, Sinus NodeC0428908
- Dysfunctions, Sinus NodeC0428908
- SINUS NODE DISEASEC0428908
- SNDC0428908
- Sinoatrial node dysfunctionC0428908
- Sinus Node DiseaseC0428908
- Sinus Node DiseasesC0428908
- Sinus Node DysfunctionC0428908
- Sinus node diseaseC0428908
- Sinus node dysfunctionC0428908
- Sinus node dysfunction (disorder)C0428908
- sinoatrial node dysfunctionC0428908
- sinus node dysfunctionC0428908
- Ectopic rhythmC1399226
- Ectopic rhythm (disorder)C1399226
- Ectopic rhythm disorderC1399226
- ectopic rhythmC1399226
- Other specified cardiac arrhythmiasC0348626
Clinical Terms
- Ectopic rhythm (disorder)
- Nodal Arrhythmia by EKG Finding
- Congenital conductive hearing loss
- Antidromic atrioventricular re-entrant tachycardia
- Wandering atrial pacemaker
- Slow ventricular response
- AVNRT - atrioventricular nodal re-entrant tachycardia
- Nodal rhythm disorder (disorder)
- PEHO (progressive encephalopathy with edema, hypsarrhythmia and optic atrophy) syndrome
- Phocomelia, ectrodactyly, deafness and sinus arrhythmia syndrome
- Junctional rhythm
- Acquired Brugada syndrome
- Sinus node dysfunction
- Sick sinus syndrome
- Finding related to awareness of heart beat
- Second cranial nerve finding
- Brugada syndrome
- CAID (chronic atrial and intestinal dysrhythmia) syndrome
- Embryocardia
- Ventricular escape complex
- Marked sinus arrhythmia
- Nodal escape bradycardia
- SUDDEN UNEXPLAINED NOCTURNAL DEATH SYNDROME
- Stable bradyarrhythmia
- Ankyrin-B syndrome
- Orthodromic atrioventricular re-entrant tachycardia
- AVRNT - atrioventricular re-entrant nodal tachycardia
- AV (atrioventricular) nodal re-entry tachycardia
- Sinus Node Diseases
- Progressive encephalopathy with edema, hypsarrhythmia and optic atrophy syndrome
- Coronary sinus rhythm disorder
- Ectopic rhythm disorder
- Sudden unexplained death syndrome
- Sudden Unexplained Nocturnal Death Syndrome (SUNDS)
- PEHOL (progressive encephalopathy with oedema, hypsarrhythmia, and optic atrophy-like) syndrome
- AV junctional rhythm
- Chronic atrial and intestinal dysrhythmia
- Sinus node dysfunction (disorder)
- PEHO (progressive encephalopathy with oedema, hypsarrhythmia and optic atrophy) syndrome
- Familial short QT syndrome
- Atrial rhythm
- Genetic short QT syndrome
- Progressive encephalopathy with edema, hypsarrhythmia, and optic atrophy-like syndrome
- Bradyarrhythmia
- Progressive encephalopathy with oedema, hypsarrhythmia, and optic atrophy-like syndrome
- Progressive encephalopathy with oedema, hypsarrhythmia and optic atrophy syndrome
- Atrio-ventricular-junctional (nodal) bradycardia
- AV node arrhythmia
- PEHOL (progressive encephalopathy with edema, hypsarrhythmia, and optic atrophy-like) syndrome
- Nodal rhythm disorder
- SUDS
- Atrio-ventricular junctional (nodal) arrest
- Re-entrant atrioventricular tachycardia
- Brugada syndrome (disorder)
- Sinus Node Disease
- Stoll Lévy Francfort syndrome
- Dysfunctions, Sinus Node
- Right Bundle Branch Block, ST Segment Elevation, and Sudden Death Syndrome
- PEHO syndrome
- Supraventricular bradyarrhythmia
- Short QT syndrome
- AV-junctional (nodal) bradycardia
- Nodal Arrhythmia by ECG Finding
- Sinus arrhythmia
- Chronic intestinal pseudo-obstruction
- Atrioventricular nodal re-entry tachycardia
- Phocomelia
- Cardiac arrhythmia ankyrin-B related
- SND
- Arrhythmia nodal
- AV junctional (nodal) arrest
- Atrial escape complex
- Postoperative fluttering heart
- Nodal arrhythmia
- Ectopic rhythm
- SUNDS
- Fluttering heart
- Dysfunction, Sinus Node
- Idiopathic ventricular fibrillation, Brugada type
- Atrio-ventricular node arrhythmia
- PEHO-like syndrome
- Re-entrant atrioventricular node tachycardia
- sinoatrial node dysfunction
- Palpitations
- brugadas syndrome
- Tic-tac rhythm
- Atrial arrhythmia
- Phocomelic dwarf
- Atrioventricular junctional rhythm
- Left atrial rhythm
- Arrhythmia nodal (NOS)
- Palpitations - fluttering
- Optic nerve finding
- Congenital absence of proximal portion of limb
- Nodal rhythm
- AVRT - Atrioventricular re-entrant tachycardia
Frequently Asked Questions
What is the ICD-10 code for other specified cardiac arrhythmias?
The ICD-10-CM code for other specified cardiac arrhythmias is I49.8. The full clinical description is "Other specified cardiac arrhythmias". I49.8 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I49.8 mean?
ICD-10-CM code I49.8 represents “Other specified cardiac arrhythmias”. 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 I49.8 a billable code?
Yes, I49.8 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I49.8 in?
I49.8 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What SNOMED CT codes does I49.8 map to?
I49.8 maps to 39 SNOMED CT concepts: 233896004, 251163000, 11849007, 88412007, 251162005, and 34 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I49.8?
I49.8 is linked to 5 UMLS Concept Unique Identifiers: C0264893, C1142166, C0428908, C1399226, C0348626. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I49.8 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other specified cardiac arrhythmias 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 I49.8?
I49.8 maps to the ICD-11 code: BE2Y (Other specified diseases of the circulatory system).
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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.