I48.91
BillableUnspecified atrial fibrillation
Unspecified atrial fibrillation
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(1)
Related Conditions
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Extracted Entities
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Also Known As / Clinical Terms(49)
SNOMED CT
- Accelerated atrioventricular conduction16797001
- Accessory atrioventricular conduction16797001
- Pre-excitation atrioventricular conduction16797001
- Preexcitation syndrome16797001
- AF - Atrial fibrillation49436004
- Atrial fibrillation49436004
- Hypercoagulability76612001
- Hypercoagulability state76612001
- Hypercoagulable state76612001
- Lone atrial fibrillation233910005
- Controlled atrial fibrillation300996004
- Rapid atrial fibrillation314208002
- Transient cerebral ischaemia due to atrial fibrillation426814001
- Transient cerebral ischemia due to atrial fibrillation426814001
- Familial atrial fibrillation715395008
- Pre-excited atrial fibrillation762247006
- Preexcited atrial fibrillation762247006
- Atrial fibrillation due to heart valve disorder313377641000119105
- Valvular atrial fibrillation313377641000119105
- Atrial fibrillation with rapid ventricular response120041000119109
- Hypercoagulability due to atrial fibrillation129032061000119103
- Hypercoagulable state due to atrial fibrillation129032061000119103
- Secondary hypercoagulability state303419171000119103
- Secondary prothrombotic state303419171000119103
Clinical Terms
- Valvular atrial fibrillation
- AF - Atrial fibrillation
- Rapid atrial fibrillation
- Pre-excitation atrioventricular conduction
- Preexcitation syndrome
- Atrial fibrillation
- Secondary hypercoagulability state
- Atrial fibrillation due to heart valve disorder
- Transient cerebral ischaemia due to atrial fibrillation
- Controlled atrial fibrillation
- Accessory atrioventricular conduction
- Lone atrial fibrillation
- Secondary prothrombotic state
- Hypercoagulability
- Accelerated atrioventricular conduction
- Hypercoagulability state
- Pre-excited atrial fibrillation
- Atrial fibrillation with rapid ventricular response
- Hypercoagulable state
- Transient cerebral ischemia due to atrial fibrillation
- Preexcited atrial fibrillation
- Familial atrial fibrillation
- Hypercoagulability due to atrial fibrillation
- Hypercoagulable state due to atrial fibrillation
Frequently Asked Questions
What is the ICD-10 code for unspecified atrial fibrillation?
The ICD-10-CM code for unspecified atrial fibrillation is I48.91. The full clinical description is "Unspecified atrial fibrillation". I48.91 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I48.91 mean?
ICD-10-CM code I48.91 represents “Unspecified atrial fibrillation”. 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 I48.91 a billable code?
Yes, I48.91 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I48.91 in?
I48.91 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What SNOMED CT codes does I48.91 map to?
I48.91 maps to 13 SNOMED CT concepts: 49436004, 16797001, 313377641000119105, 120041000119109, 300996004, and 8 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I48.91?
I48.91 is linked to 1 UMLS Concept Unique Identifier: C3264374. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I48.91 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like unspecified atrial fibrillation 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 I48.91?
There is no direct ICD-11 mapping available for I48.91 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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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.