I48.11
BillableLongstanding persistent atrial fibrillation
HCC Category Mapping
V28HCC 238 — Specified Heart Arrhythmias
0.000V24HCC 96 — Specified Heart Arrhythmias
0.282ESRDHCC 96 — Specified Heart Arrhythmias
0.000RxHCCHCC 193 — Specified Heart Arrhythmias
0.000What This Code Means
A persistent irregular heartbeat in the upper chambers of the heart that has been present for more than one week but less than one year.
Coding Tips
- •This code requires documentation of 'longstanding persistent' atrial fibrillation, typically defined as lasting more than 1 week but less than 1 year
- •Distinguish from permanent atrial fibrillation (I48.21) and other persistent forms
Clinical Significance
Longstanding persistent atrial fibrillation has been present continuously for more than 12 months and represents a more advanced stage of the arrhythmia progression. Patients with this duration are less likely to respond to rhythm control strategies and often have more extensive atrial remodeling. This classification guides treatment decisions toward rate control and ongoing anticoagulation.
Documentation Requirements
- ✓Provider documentation of longstanding persistent atrial fibrillation
- ✓Duration of continuous atrial fibrillation documented (greater than 12 months)
- ✓Electrocardiogram or monitoring confirmation
- ✓Decision regarding rhythm vs rate control strategy documented
- ✓Anticoagulation status and stroke risk assessment
Commonly Confused Codes
I48.19 — Other persistent atrial fibrillation; persistent but not meeting longstanding criteria (less than 12 months)I48.21 — Permanent atrial fibrillation; decision made to no longer pursue rhythm controlI48.0 — Paroxysmal atrial fibrillation; self-terminating episodes, not continuousI48.20 — Chronic atrial fibrillation, unspecified; less specific chronic classification
Code Hierarchy
└I48Atrial fibrillation and flutter└I48.1Persistent atrial fibrillation└I48.11Longstanding persistent atrial fibrillation
└I48.11Longstanding persistent atrial fibrillation