Other persistent atrial fibrillation

This code signifies a form of atrial fibrillation that is continuous and sustained for more than seven days, or that recurs after cardioversion, but is not considered long-standing persistent or permanent. It indicates that the heart's upper chambers beat irregularly and rapidly, leading to inefficient blood pumping. This condition requires ongoing management to control heart rate and rhythm and prevent complications.

Use this code when documentation explicitly states "persistent atrial fibrillation" and does not specify "long-standing persistent" or "permanent." It is appropriate for patients whose AFib episodes last longer than a week or who experience recurrence after attempts at rhythm restoration. Supporting documentation should include physician notes detailing the duration of the AFib and the patient's response to treatment.

• Differentiate carefully between paroxysmal, persistent, long-standing persistent, and permanent AFib based on documented duration and treatment history.
• Do not use this code if the documentation specifies "long-standing persistent atrial fibrillation" (I48.2) or "permanent atrial fibrillation" (I48.91).
• Always sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity impacting care.