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Is Your Medical Billing Company Doing a Good Job? Eight Monthly Reports, One Page, and the Contract Terms to Check

The way to tell if your medical billing company is doing a good job is to get the same eight reports from it every month and read them against the practice’s own schedule, payer contracts and bank deposits, rather than against someone else’s benchmark. The reports show what was seen and never billed, what was rejected or denied and what happened next, what each payer paid against its contract, and what was written off and why. This guide lists the eight, explains why collections should be measured against the allowed amount rather than charges, shows which problems start inside the practice before the billing company ever sees a claim, and covers the contract terms — data, access, fees and the way out — including the Medicare rule on billing agents’ pay. Lumina sells no billing services, so nothing here is a pitch to switch.

By , founder of Lumina Business Advisory · Updated · Sources checked · Editorial standards

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Against its stated terms, when does a typical invoice actually get paid?

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Answer it in the Self-Audit

A deposit total and a monthly summary can both look fine while money stalls at a step nobody reports on. Billing companies publish checklists with thresholds for denial rates or clean claims, and the ones we read cite no source for them. The benchmark that holds up is the practice’s own month: the same reports, built the same way, compared with last month and with the same month last year.

Shared reports are also fairer to the billing company. A biller sees only what reaches it: the charges the practice enters, the insurance data the front desk captures, the authorizations someone requested. Reading the reports together sorts each problem to the side that can fix it. The alternative shows up in physicians’ own words on a pain-medicine forum in 2025: one described going through three billing companies in three years; another said half of the office manager’s job was double-checking the biller’s work. A fixed set of reports is what replaces the double-checking.

Eight reports to ask a medical billing company for every month

Each report answers one question, and together they cover the path from the visit to the deposit. Ask for them in a fixed format, on a fixed day, as exports the practice keeps:

  • Unbilled visits and charge lag, by provider: encounters on the schedule with no charge entered, and days from date of service to claim submission. The question: what was seen and not billed, and how long does a finished visit wait to become a claim?
  • Rejections by age: open clearinghouse and payer rejections, aged from the date of service, with the reason and the date each one was accepted after correction. The question: is any claim running out of filing time?
  • Denials by reason code and payer: count and dollars by Claim Adjustment Reason Code (CARC), remark code and payer, with the action taken on each. The question: which denials repeat, and where do they start?
  • Appeals and corrected claims: what was sent, when, and the outcome. The question: are denials worked, or written off?
  • Accounts receivable by payer and age, aged from the date of service. The question: whose money is getting older?
  • Allowed amount against the contract: for the top CPT codes by volume and the top payers, the median allowed amount on the electronic remittances set beside the contracted rate. The question: is each payer paying what it agreed to?
  • Adjustments and write-offs by code and reason: contractual, timely filing, small balance, administrative and bad debt, each with the person who approved it. The question: what money left the books without being collected?
  • Remittances against deposits: payment totals on the remittances matched to bank deposits by payer and date. The question: did every posted payment arrive, and was every deposit posted?

The remittance in reports six and eight is the X12 835, which 45 CFR 162.1602 adopts as the HIPAA standard for health care claim payment and remittance advice, so every payer that pays electronically sends the same structure. A billing company that cannot produce one of these reports has answered a question too, and the contract is the place to fix it.

Collections against allowed, not against charges

A practice’s charges come from its own fee schedule, which can sit well above what any payer pays, so a percentage of charges collected mostly measures how high the fee schedule is set. The number that measures billing work is collections against the allowed amount: what payers and patients paid, divided by what the payers’ adjudication allowed.

On the remittance, the contractual write-down shows as CARC 45, “Charge exceeds fee schedule/maximum allowable or contracted/legislated fee arrangement,” which X12 says to use with group code CO or PR depending on liability. That adjustment is expected. Two things around it are not: a write-down larger than the contract implies, which means the allowed amount came in below the contracted rate, and a patient share (group code PR) that was allowed but never collected.

Illustrative example: in a month, payers allow $200,000 on a practice’s claims. Payers pay $160,000, and $40,000 is assigned to patients as deductibles and coinsurance, of which $25,000 is collected. Collections against allowed are $185,000 of $200,000, and the gap is a front-desk and patient-statement question, not a payer one. The same month measured against $400,000 of charges would read as 46 percent and say nothing useful.

Problems that start before the billing company sees a claim

Some of what shows up in a billing company’s reports is the practice’s own work. The reason codes on the denial report say which:

  • CARC 31, “Patient cannot be identified as our insured,” CARC 140, for an ID number and name that do not match, and CARC 27, “Expenses incurred after coverage terminated”: registration and eligibility at check-in.
  • CARC 197, “Precertification/authorization/notification/pre-treatment absent”: the practice’s prior authorization tracker.
  • CARC 29, “The time limit for filing has expired”: charge lag at the practice, or rejections nobody worked at either end.
  • CARC 16, “Claim/service lacks information or has submission/billing error(s)”: whichever side left out the missing item, which the remark code names.
  • CARC 4, “The procedure code is inconsistent with the modifier used,” and CARC 50, for medical necessity: documentation and coding decisions that belong to providers and certified coders, not to an operations review.

Sorting denials this way is not about blame. It tells the owner which fixes need a conversation with the billing company and which need a change at the front desk, in the authorization routine or in how quickly notes get signed.

Contract terms: data, access, fees and the way out

The contract decides whether the practice can see its own numbers, and what happens if it leaves. Terms worth reading with counsel before signing, or at renewal:

  • Data: claims, remittances and reports belong to the practice and are returned in a usable format on request and at termination.
  • Access: read-only logins to the PM and the clearinghouse for the practice, so reports can be pulled without asking.
  • Reports: the eight above, named in writing, with a delivery day.
  • Fee basis: what the fee is calculated on, what counts as a collection, and whether payments taken at the front desk are included.
  • Termination: the notice period, and the practice’s data back on the way out. Running the switch itself without losing claims is covered in the guide to in-house or outsourced medical billing.

The Medicare rule on billing agents’ pay

Medicare limits who may receive its payments. For a physician practice, 42 CFR 424.80(b)(5) lets Medicare pay an agent that furnishes billing and collection services if the conditions of 42 CFR 424.73(b)(3) are met. Those conditions include: “The agent’s compensation is not related in any way to the dollar amounts billed or collected,” and “The agent’s compensation is not dependent upon the actual collection of payment.” The agent must also act under payment instructions the practice can change or revoke at any time, and payment is always made in the practice’s name.

The scope is the point. CMS’s claims manual says these conditions “do not apply if the agent merely prepares bills for the provider and does not receive and negotiate the checks payable to the provider/supplier.” It also describes Medicare payments sent to a bank account in the provider’s name only, where only the provider can give instructions. So the question to ask is where Medicare’s money lands and who controls that account. If it lands in an account only the practice controls and the billing company only prepares and follows up on claims, the manual says these conditions do not apply; if the billing company receives the payments, a fee tied to collections runs into them. State rules on fee-splitting can add their own limits. This is rule text, not legal advice, and the practice’s attorney should read the agreement against both.

When to keep the billing company, switch, or buy nothing

Switching billing companies resets a lot of work: system access, enrollment for electronic remittances and payments, open receivables, and a run-out period with two vendors at once. Before switching, ask the current company for the eight reports for three months. If they arrive, are read in a monthly meeting with one page of trends and named actions, and the numbers move, the practice has what it needs, and no outside help is worth paying for.

An outside look earns its fee when the reports cannot be produced, when they disagree with the bank deposits, or when nobody can say whether a problem starts in the practice or at the biller. The Revenue Review counts this under the claim-to-payment hand-off and takes two weeks; its first pass reads aggregate exports from the practice and, with the practice’s permission, from its billing company — not patient names — and it ends with a written report that prices each finding and a 90-day plan. It is not a coding or compliance audit, and because it sells no billing, it has no reason to recommend a switch. A free 20-minute call is enough to tell whether it fits.

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What should you do next?

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Start with the Review.
If the causes are debatable, the problem crosses departments or systems, or the economics are unclear — diagnose before anyone builds. The Revenue Review: $4,500 fixed, two weeks, computed from your own records. Read a sample finding before you decide — free, no email.

Asked right after

What reports should a medical billing company provide?
Eight, every month: unbilled visits and charge lag by provider, rejections by age, denials by reason code and payer, appeals and corrected claims, accounts receivable by payer and age, allowed amounts against contracted rates, adjustments and write-offs by reason, and remittances matched to bank deposits. Name them in the contract with a delivery day.
What is a good collection rate for a medical practice?
No single number fits every practice and payer mix, and the published benchmarks come from surveys or vendors. Measure collections against the allowed amount, not against charges, and compare the practice with its own previous months and with the same month last year.
Can a medical billing company charge a percentage of collections?
It depends on how the money flows and on state law. Where Medicare pays a billing agent, 42 CFR 424.73(b)(3), applied to physician practices through 424.80(b)(5), requires that the agent’s pay not be related to amounts billed or collected. CMS’s manual says those conditions do not apply when the agent only prepares bills and does not receive the payments. Have counsel read the contract.
Who owns the billing data if a practice changes billing companies?
The contract decides, which is why it should say in writing that claims, remittances and reports belong to the practice and come back in a usable format at termination, along with who works the open claims during the run-out period and at what fee.
Should a practice audit its billing company?
Start with reports, not an audit: the eight monthly reports, read against the schedule, the payer contracts and the bank deposits, answer the operational questions. A coding audit by certified coders is a different review, of documentation against coding rules, and it answers a different question.
Why do billing companies offer a free audit?
A free audit from a billing company is a sales step: it looks for the work that company could take over. It can still be worth reading, next to the practice’s own reports, as long as it is read as a proposal rather than a neutral review.

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