ICD-10 Diagnosis Code I48.91

Unspecified atrial fibrillation

Diagnosis Code I48.91

ICD-10: I48.91
Short Description: Unspecified atrial fibrillation
Long Description: Unspecified atrial fibrillation
This is the 2018 version of the ICD-10-CM diagnosis code I48.91

Valid for Submission
The code I48.91 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the circulatory system (I00–I99)
    • Other forms of heart disease (I30-I52)
      • Atrial fibrillation and flutter (I48)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code I48.91 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)

  • 308 - CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH MCC
  • 309 - CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH CC
  • 310 - CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITHOUT CC/MCC

Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Synonyms
  • Atrial fibrillation
  • Atrial fibrillation and flutter
  • Atrial fibrillation with rapid ventricular response
  • Atrial flutter
  • Controlled atrial fibrillation
  • Lone atrial fibrillation
  • Rapid atrial fibrillation
  • Transient cerebral ischemia due to atrial fibrillation

Information for Patients


Atrial Fibrillation

Also called: AF, AFib

An arrhythmia is a problem with the speed or rhythm of the heartbeat. Atrial fibrillation (AF) is the most common type of arrhythmia. The cause is a disorder in the heart's electrical system.

Often, people who have AF may not even feel symptoms. But you may feel

  • Palpitations -- an abnormal rapid heartbeat
  • Shortness of breath
  • Weakness or difficulty exercising
  • Chest pain
  • Dizziness or fainting
  • Fatigue
  • Confusion

AF can lead to an increased risk of stroke. In many patients, it can also cause chest pain, heart attack, or heart failure.

Doctors diagnose AF using family and medical history, a physical exam, and a test called an electrocardiogram (EKG), which looks at the electrical waves your heart makes. Treatments include medicines and procedures to restore normal rhythm.

NIH: National Heart, Lung, and Blood Institute

  • Atrial fibrillation - discharge (Medical Encyclopedia)
  • Atrial fibrillation or flutter (Medical Encyclopedia)
  • Cardiac ablation procedures (Medical Encyclopedia)
  • Electrocardiogram (Medical Encyclopedia)
  • Holter monitor (24h) (Medical Encyclopedia)


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