I48.92

HCC Category Mapping

What This Code Means

This code describes a condition where the upper chambers of the heart (atria) are beating very rapidly and irregularly, but the specific type of flutter pattern has not been identified or documented. It's a heart rhythm problem that can cause palpitations and may require treatment.

Coding Tips

• •Only use this code when the documentation does not specify the type of atrial flutter (such as typical or atypical); if the type is documented, use a more specific code like I48.91
• •Verify whether the flutter is paroxysmal (comes and goes) or persistent, as this distinction may affect treatment decisions and should be documented by the provider

Clinical Significance

Unspecified atrial flutter is a supraventricular tachyarrhythmia with organized atrial electrical activity that can lead to hemodynamic compromise and stroke. It often coexists with atrial fibrillation and shares similar thromboembolic risks. Proper capture ensures appropriate anticoagulation and cardiology follow-up resource planning.

Documentation Requirements

• ✓Provider must document 'atrial flutter' as an active diagnosis assessed during the encounter
• ✓Type of flutter should be specified if known (typical vs atypical) — this unspecified code is used when type is not documented
• ✓Current treatment plan including rate control, rhythm control, or ablation considerations
• ✓Anticoagulation status and stroke risk assessment
• ✓Associated symptoms and hemodynamic impact
• ✓Electrocardiogram or electrophysiology findings if referenced

Commonly Confused Codes