Seven Medical Billing Challenges Physician Practices Face, and How to Handle Them

Ask a practice manager what is hardest about billing and you rarely hear “the coding.” You hear about the moving target: rules that change, payers that behave differently from one another, staff who are stretched thin, and patients who are paying a larger share of the bill than they used to. None of these have a one-time fix. They need a steady routine.

This is not a list of mistakes. We cover those separately in common medical billing mistakes. It is a list of structural challenges, and what practices that handle them well tend to do.

1. Rules that never stop changing

Billing rules are updated all the time. ICD-10-CM codes change each year, with new codes effective October 1. CPT updates arrive on January 1. CMS publishes a new Medicare Physician Fee Schedule rule each year, and the NCCI edits that govern which codes can be billed together are updated quarterly. Commercial payers publish their own policy changes, often by bulletin or portal notice that nobody on your team is assigned to read.

What helps: give one person responsibility for reading payer bulletins and the CMS updates, and keep a one-page log of what changed and when. When denials spike for a particular code, check the log first.

2. Prior authorization

Prior authorization is a recurring frustration for physicians. The American Medical Association has called for reform and publishes its own research and advocacy on the subject, and CMS has finalized rules to make authorization decisions faster and more transparent for certain plans. In the meantime, each payer has its own list of services that need approval, its own submission method and its own turnaround time.

What helps: keep a living list, by payer, of services that need authorization. Record the authorization number, the approved code, the number of units and the expiry date in a place the biller can see. Build the authorization step into scheduling, not billing. Your front desk can verify these items before the appointment, which is where our eligibility and authorization checks sit.

3. Every payer behaves differently

Two payers can treat the same claim in opposite ways: different timely filing limits, different modifier rules, different documentation requirements, different appeals processes. A billing team that relies on one set of habits will be right with some payers and wrong with others.

What helps: build a short, one-page payer cheat sheet for each of your top five payers covering filing limit, appeal window, authorization rules, claim status contact and any quirks. Review it twice a year.

4. Staffing, turnover and single points of failure

In a lot of small practices, one person knows how billing works. When that person is on holiday, sick or leaves, claims stop going out and nobody notices until the A/R report shows a drop in cash. Training a replacement takes months, and in the meantime the backlog grows.

What helps: write down the core routines (daily claim submission, payment posting, denial work, A/R follow-up) in plain language, and make sure at least two people can do each of them. If that is not realistic, it is a good reason to consider outsourcing some or all of the work, as we discuss in our guide to the benefits of outsourcing for small practices.

5. Patients are paying more of the bill

Deductibles and coinsurance mean patients owe a larger share of many visits than they once did, and a patient balance is slower and more expensive to collect than a payer payment. If you do not collect it, it becomes bad debt.

What helps: verify benefits before the visit so you can tell the patient what to expect, collect copays and known balances at check-in, send clear statements promptly with an easy way to pay, and offer a payment plan before the balance gets old. For self-pay and uninsured patients, check whether the No Surprises Act Good Faith Estimate requirement applies to the service.

6. Documentation that does not support the code

Since the AMA’s 2021 and 2023 changes to evaluation and management (E/M) coding, office and other E/M visits can be leveled by medical decision making or by total time. Both have documentation requirements, and clinicians often learn the rules less thoroughly than their coders. The result is either under-coding, which loses revenue, or over-coding, which creates audit risk.

What helps: a short, regular review where the coder or biller shows each clinician a handful of anonymized notes and the code they supported. It takes thirty minutes a quarter and tends to pay for itself.

7. Not enough visibility

The most underrated challenge is not knowing. Many practices see deposits and a payment report, but not A/R aging by payer, denial reasons, or whether payers are paying their contracted rates. Without that, every other problem stays hidden.

What helps: a one-page monthly report with five items: charges, payments, denial rate with top reasons, A/R aging by payer, and net collection rate. Review it with whoever runs billing. Our payment posting and reporting work produces exactly that.

Where to start

Do not try to fix all seven at once. Pull your last three months of denials and sort them by reason. The top reason usually points at one of the challenges above, and that is the first one to tackle. Then check your A/R aging: if more than a small slice is older than 90 days, our guide to A/R management is the next read.

It also helps to remember that none of these challenges is a sign of a badly run practice. They affect almost every independent practice in the country. The difference is that the practices that cope well have made each challenge someone’s job, put it on a calendar and look at the same few numbers every month. That habit, more than any piece of software, is what keeps payments steady when the rules change.

And if you would like a second opinion on where your practice is losing time or money, our medical billing team is happy to look.

A challenge worth adding: systems that do not talk to each other

Many practices run an EHR, a practice management system, a clearinghouse and a patient payment tool that are only loosely connected. Data gets retyped, charges fail to cross over and rejections go back to a screen nobody checks. Each hand-off is a place where a claim can stall without anybody noticing.

What helps: map the path a charge takes from signed note to submitted claim and ask who checks it at each step. Then set up one daily report that lists encounters with no charge, charges with no claim and claims with no acceptance report. It takes an afternoon to build and catches a surprising amount.