Most practices do not realize they have a denial problem until it is already expensive. By the time someone flags it — usually when cash flow tightens or the AR aging report looks ugly — denials have been piling up for months, quietly eroding revenue that should have been collected on the first submission.
The warning signs are almost always there beforehand. You just have to know what to look for.
Here are five signs your revenue cycle has a denial problem — and what each one is telling you.
Sign 1: Your Denial Rate Is Above 5%
A clean, well-managed revenue cycle should have a denial rate below 5%. If yours is consistently above that — or worse, trending upward month over month — something is broken upstream.
The most common causes: eligibility not being verified before the visit, coding errors that do not get caught before submission, or claims going out with missing or incorrect information. Each of these is fixable, but none of them fix themselves.
What to do: Pull your denial rate for the last 90 days by payer. If one or two payers are driving the bulk of your denials, that tells you where to start. If it is spread evenly across payers, the problem is more likely internal — coding or front-end workflow.
Sign 2: Your AR Buckets Over 90 Days Are Growing
Look at your AR aging report. If the 90-day and 120-day buckets are growing month over month, denials are almost certainly part of the reason. Claims that get denied and not worked promptly age out — and the older a claim gets, the harder it is to collect.
Many practices do not have a systematic process for working denied claims. They get flagged, they sit, they age, and eventually they get written off. That is not a billing problem — that is a revenue leak.
What to do: Set a hard rule — no denied claim sits unworked for more than 7 business days. Assign ownership. Track it. If you do not have the bandwidth to work your denial backlog, that is exactly the kind of targeted engagement Simplified RCM handles.
Sign 3: Your Staff Is Spending Hours Reworking the Same Claims
If your billing team is constantly resubmitting the same types of claims to the same payers, you do not have a rework problem — you have a root cause problem. The same denial keeps coming back because nobody has fixed what is causing it in the first place.
This is one of the most common and most costly patterns in medical billing. The team is busy, they look productive, but they are running in circles. The underlying issue — a credentialing gap, a coding pattern, a payer-specific requirement that is not being met — never gets addressed.
What to do: Pull your top 5 denial reason codes for the last 60 days. If you see the same codes repeating, that is your list of root causes. Fix those five things and you will see your rework volume drop significantly.
Sign 4: You Are Seeing the Same Denial Codes Over and Over
CO-16, CO-97, CO-4, PR-1 — if any of these denial codes are showing up repeatedly in your remittance data, pay attention. Repeat denial codes are one of the clearest signals in revenue cycle management that a systemic issue has not been addressed.
CO-16 (claim lacks information) often points to documentation gaps. CO-97 (payment included in allowance for another service) can indicate bundling issues or modifier problems. PR-1 (deductible amount) may simply mean eligibility is not being checked thoroughly before the visit.
What to do: Map your top denial codes to their root causes. Each code is a clue. Once you know the cause, you can fix it at the source — in the workflow, in the coding, or in how claims are being built before submission.
Sign 5: Your Payer Contracts Have Not Been Reviewed in Over a Year
This one is easy to overlook because it does not show up as a denial in the traditional sense — but it quietly costs practices significant revenue every year. Payer fee schedules change. Policies change. What was an acceptable claim format or modifier usage two years ago may now trigger a denial or a reduced payment.
If your team is submitting claims the same way they have always submitted them, without checking whether payer requirements have changed, you are likely leaving money on the table — or getting denials you do not understand because nobody connected them to a policy update.
What to do: Set a calendar reminder to review your top 3 payer contracts every 6 months. Check for changes to covered services, prior authorization requirements, timely filing limits, and coding policies. If a payer has made changes you were not aware of, audit the last 90 days of claims for that payer.
The Common Thread
Every one of these signs points to the same underlying issue: denials are being treated as individual events instead of systemic signals. A one-off denial gets worked and closed. A pattern of denials means something in your process needs to change.
The practices that manage denials well are not the ones with the fastest resubmission turnaround — they are the ones who ask why the denial happened and fix the thing that caused it. That is the difference between a billing team that is always catching up and one that is consistently collecting.
If you are seeing any of these signs in your practice, a focused review of your denial trends is a good place to start. You do not need a full audit — just a clear look at what is driving your denials and a prioritized plan for addressing it.