Denial Management in Healthcare: Causes, Process, and Prevention

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Commure Team
 | 
August 4, 2026

In a report released in 2026, Premier found that providers spent an average of $57.23 to fight a single denied claim in 2023, up from $43.84 the year before, and nearly three-quarters of physicians now report that prior-authorization denials have climbed over the past five years, so denials are getting more expensive and more common at the same time.

Most of what drives denials is knowable and fixable, from the front-desk data that starts a claim to the coding and documentation behind it, which is why a structured denial management program pays for itself.

What is denial management?

Denial management is the systematic process of identifying denied claims, finding out why a payer refused them, correcting and resubmitting or appealing them, and fixing the upstream problems so the same denials stop recurring. Done well, it protects cash flow and surfaces the process gaps that cost an organization revenue.

A rejection and a denial aren't the same thing, and the distinction changes how you work each one. A rejection happens before the payer fully processes a claim, usually because of missing or malformed data, so you can correct and resubmit it quickly. A denial happens after the payer adjudicates the claim and decides it won't pay, which means you either correct and resubmit or file a formal appeal.

In medical billing, denial management runs alongside eligibility, coding, and collections, and it depends on all of them, since a claim denied for a coding error or a missing authorization started going wrong long before it reached the payer.

How common are denials, and why are they rising?

Denials are common and costly. On the plans where insurers are required to report their numbers, HealthCare.gov insurers denied 19% of in-network claims in 2024, close to one in five, and 37% of out-of-network claims, the most recent year the federal marketplace data covers. In a national survey of hospitals released in 2026, initial denial rates ran around 15% on 2023 claims.

Prior authorization is a large and growing piece of the problem. Physicians and their staff now complete about 39 prior authorization requests per physician each week and spend roughly 13 hours on them, and nearly one in three physicians say those requests are often or always denied.

Regulators are responding to the pressure. Under the CMS Interoperability and Prior Authorization Final Rule, impacted payers must, as of January 2026, decide urgent prior authorizations within 72 hours and standard ones within 7 calendar days, give a specific reason for each denial, and publicly report their prior authorization metrics. Those rules should add transparency over time, though the denial volume providers face today is still climbing.

What causes claim denials?

Most denials trace back to a short list of recurring causes across the front end, coding, and documentation. In KFF's analysis of marketplace claims, the single most common reason was an unhelpful "other" category, followed by administrative reasons and excluded services, with lack of prior authorization or referral at 9% and only 6% tied to medical necessity.

In day-to-day billing, the causes that show up most often are:

  • Eligibility and registration errors, where coverage is inactive or the patient's information is wrong on the date of service.
  • Missing or incorrect data, from a misspelled name to a transposed member ID.
  • Missing prior authorization, when a service that needed advance approval didn't get it.
  • Coding errors, including wrong CPT, ICD-10, or modifier choices, and duplicate claims. Getting this right is where AI medical coding is increasingly earning its keep.
  • Medical necessity, when the documentation doesn't support the service billed, which ties denial rates directly to clinical documentation improvement.
  • Timely filing, when a claim lands after the payer's submission window and becomes almost impossible to recover.
  • Non-covered services and coordination-of-benefits issues, common when a patient carries more than one plan.

Denials also fall into categories that shape how you work them. Soft denials are temporary and can be corrected and resubmitted, while hard denials require a formal appeal or turn into written-off revenue. Administrative denials come from process errors like eligibility or missing data, and clinical denials question medical necessity or coding and need clinical evidence to overturn.

The denial management process, step by step

The denial management process is a repeatable cycle that starts when a payer refuses a claim and ends only when the claim is resolved and the reason behind it is fixed. It breaks into five stages:

  1. Identify and log the denial. Pull every denial from remittance advice, explanation-of-benefits statements, and your payer work queues, and log it right away so nothing slips past the timely-filing deadline.

  2. Categorize the denial. Sort each one by reason code, payer, dollar value, and age, which turns a pile of individual problems into patterns you can act on.

  3. Investigate the root cause. Read the Claim Adjustment Reason Codes and Remittance Advice Remark Codes to understand what actually went wrong, rather than what the denial appears to say on the surface.

  4. Correct and resubmit, or appeal. Fix and resend the claim when it's a correctable error, or build a formal appeal when the payer got it wrong, knowing an appeal can run several rounds of review before it resolves.

  5. Prevent the next one. Feed what you learned back upstream so the same denial stops recurring, which is the stage that compounds over time.

Because about 70% of denials are ultimately overturned once providers pursue them, prioritizing by dollar value, claim age, and likelihood of success is how a team recovers the most revenue with the staff it has.

How to prevent denials

The most effective denial management programs stop denials before submission by tightening the front end, documentation, and coding. Prevention is really about revenue integrity: making sure what's documented, coded, and billed matches the care delivered.

A few practices move the needle most:

  • Verify eligibility and benefits at registration, so coverage problems surface before the visit rather than after the claim.
  • Handle prior authorization proactively, tracking which services need it and securing approval early.
  • Strengthen documentation and coding, since accurate notes and codes are what hold up under payer review. Autonomous coding helps here by generating codes with supporting rationale straight from the documentation.
  • Capture charges completely, because missed or late charges never surface as denials and become permanent losses, which is why charge capture belongs in any prevention plan.
  • Track denial trends with analytics, so a spike from one payer or one service line gets caught early.
  • Build cross-department accountability, matching each denial type to the team that can prevent it, from front desk to coding to billing.

Platforms like Commure Pro pull coding, charge capture, and documentation into one layer so these controls run on every encounter instead of depending on someone remembering to check.

Metrics that matter in denial management

A handful of KPIs tell you whether your denial management is working. The core four are your denial rate (the share of claims denied), your appeal overturn rate (how often you win the denials you fight), your days to resolution (how long a denial takes to clear), and your write-off rate (the revenue you give up).

There's no universal target, but recent MGMA benchmarking put the aggregate first-pass denial rate near 8%, and many organizations run well above that. Two other numbers frame the opportunity: denials get overturned roughly 70% of the time when pursued, and each one costs about $57.23 to work, so a lower denial rate and a higher first-pass yield translate directly into recovered margin.

How AI is changing denial management

AI is shifting denial management from an after-the-fact cleanup job toward prevention, flagging at-risk claims before they're submitted, and automating the appeals and resubmissions that used to consume staff hours. The same models can categorize denials by reason code, group similar claims for bulk resubmission, and draft appeals with the supporting documentation attached.

That's the approach behind Commure's AI work on denials, which pairs accurate coding and charge reconciliation on the front end with automated denial categorization and resubmission on the back end. One New York health system cut its timely-filing denials by 53% and raised monthly charges by 20% (from $7.5M to $9.4M) after deploying automated charge note reconciliation, detailed in the NYC health system case study.

Denials are one piece of a broader move toward healthcare automation across the revenue cycle, where prevention on every claim beats recovery on the ones that slip through.

Turning denial management into prevention

Denial management works best as part of a connected revenue cycle, where clean documentation, accurate coding, and complete charge capture combine into a claim that's right the first time. That's what revenue cycle management built on AI is meant to deliver.

See how Commure RCM turns denial management from a recovery scramble into a prevention system.

Discover Commure RCM

Frequently asked questions

What is the difference between a claim denial and a claim rejection?

A claim rejection happens before the payer processes the claim, usually because of missing or invalid data, so you can correct and resubmit it quickly. A denial happens after the payer adjudicates the claim and refuses to pay, which means you either fix and resubmit it or file a formal appeal. Rejections clear faster; denials take more work.

What is a good claim denial rate?

There's no official target, but recent MGMA benchmarking put the aggregate first-pass denial rate near 8%, while marketplace insurers denied 19% of in-network claims in 2024. A realistic goal depends heavily on your payer mix and service lines, so track your own trend rather than chasing a single industry number.

What is denial management in medical billing?

In medical billing, denial management is the workflow billing teams use to catch, correct, appeal, and prevent denied claims. It covers reading payer reason codes, resubmitting fixable errors, appealing wrongful denials before filing deadlines close, and feeding root causes back to registration, coding, and documentation so the same denials stop recurring.

What are denial management services?

Denial management services are the people, software, or outsourced partners that handle denied claims for a provider. They range from in-house billing teams to third-party RCM vendors and AI-driven tools that flag at-risk claims before submission, categorize denials by reason code, and automate resubmissions and appeals to recover revenue faster.

What is the difference between denial management and revenue cycle management?

Denial management is one part of revenue cycle management, which covers the full financial path of a claim from registration and eligibility through coding, billing, and payment posting. Denial management focuses specifically on the claims a payer refuses, resolving them and preventing the next ones, so it only works as well as the revenue cycle around it.

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