What is AR aging?
Outstanding receivables grouped by how long they have been unpaid, usually in 30-day buckets.
Definition
AR aging sorts every open balance into buckets — 0–30, 31–60, 61–90, 91–120, and over 120 days — measured from the date of service or the date of billing. The shape of that distribution says more about a revenue cycle than any single average.
The bucket that matters most is over 90 days. Claims that age past 90 days are disproportionately claims that denied and were never worked, or claims that were never successfully submitted at all. They also collect at a fraction of the rate of current claims, and some are already past their appeal or filing windows.
Why it matters
AR over 90 days is the most direct available proxy for unworked denials, and it is where a practice’s recoverable-but-forgotten revenue is concentrated.
Denial codes to know
Related terms
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