This guide walks the five families, what each one looks like on the remit, why it recurs, and who should own the fix. It ends with the honest version of what "working denials" means, because the phrase gets used for everything from real appeals to quietly writing balances off.
Family 1: Eligibility and Registration
The claim bounces because the coverage was inactive, the plan changed, the subscriber details did not match, or benefits ran out. It repeats because verification happens shallowly or late: many practices park eligibility with the billing team after the visit, which is exactly backwards. The owner is the front of the process: a verification specialist working the schedule days ahead, so the visit starts from facts. That work has its own page: insurance verification and eligibility services.
Family 2: Prior Authorization
The procedure needed an auth that was never obtained, or was obtained and does not match the claim, or the payer said none was needed and denied anyway. Verbal clearances have a way of being disputed later. It repeats because auth is a paper-trail discipline and the trail is optional until it is not. The owner is whoever schedules the procedure, armed with a standing rule: reference numbers on every payer call, written confirmation requested when a payer says no auth is required, and the auth reconciled against the claim before submission.
Family 3: Timely Filing
The claim was clean and simply late, and late claims convert directly into write-offs. Timely filing repeats because unsubmitted work is invisible until the deadline has passed. The owner is the biller, with an aging submission queue that someone looks at weekly, not quarterly.
Family 4: Coding Edits and Downcoding
Bundling edits, modifier rejections and payer downcoding, where the claim is paid at a lower level than billed. This family is genuinely harder because payers are inconsistent with each other, and the correct response differs case by case: a paperwork bounce gets corrected and resubmitted, a policy denial gets appealed with the record, and a payer's downcoding pattern gets tracked and escalated, never silently mirrored in your own coding. The owner is split: the biller triages, provider documentation supports the level billed, and appeal decisions stay with the practice.
Family 5: Documentation and Medical Necessity
The payer's policy pays this procedure only with specific documentation, and the claim went out without it. It repeats in every specialty with procedure-heavy billing, because assembling the record per payer policy is checklist work that busy teams skip. The owner is the biller running that checklist before submission, with providers closing documentation gaps at the source.
Hard vs Soft, and the Line That Matters
Coders split denials into soft (fixable and resubmittable) and hard (unrecoverable revenue). The line that matters operationally is different: worked vs unworked. Veteran AR managers on the AAPC forums put it plainly: there is no acceptable denial percentage, a quarter of AR sitting past 120 days is far too high, and well-run practices keep it near 10% (the discussion). Unworked denials are how a practice drifts across that line while the monthly summary still looks fine.
The pattern behind unworked denials is consistent in owner accounts: whoever handles billing collects the clean claims, and the denial queue becomes nobody's job.
What "Working Denials" Actually Means
Four verbs, in order. Triage: separate paperwork bounces from policy denials and prioritize by value and deadline. Correct and resubmit: the fixable ones, fast, inside filing windows. Appeal: the policy denials worth fighting, with the complete record, on the payer's process. Feed back: every recurring reason routed to its owner at the front of the cycle so next month's queue is smaller. Anything less is denial admiration.
Where a Managed Crew Fits
A myMedCrew AR and denial specialist works that four-verb queue inside your own billing system, on your logins, with write-offs and appeal decisions staying yours. The service page is AR recovery and denial management; if the recurring families point at the front of your process instead, start with verification, and if you are rethinking the whole model, read what to check before you hand billing to anyone.
Frequently asked questions
What are the most common denial reasons in medical billing?+
Five families cover most volume: eligibility and registration errors, prior authorization problems, timely filing, coding edits and downcoding, and documentation that does not support the claim under the payer's policy.
What are the two types of denials?+
Soft denials are correctable and resubmittable; hard denials are final and become write-offs. Operationally the more important split is worked versus unworked, because soft denials left unworked harden on their own.
What are the steps of denial management?+
Triage by value and deadline, correct and resubmit the fixable claims, appeal policy denials with the complete record, and feed recurring causes back to their owners at the front of the revenue cycle.
Why do the same denials keep happening?+
Because each family has a natural owner and recurring denials mark the spots where no owner is assigned. Practices that assign the front-of-process families to a verification specialist and the back-of-process families to a worked denial queue see the repeats fall away.
Find out which family owns your top ten denials.
Book a call and bring last month's denial report; the conversation is specific from minute one.