There is no single billing company that is automatically best for every chiropractic practice. A practice should compare companies on specialty knowledge, denial management, claim root cause analysis, accounts receivable follow up, revenue visibility, credentialing support, technology compatibility, service model and accountability. This article sets out those criteria, explains what makes them different in chiropractic specifically, and describes how CareVixis addresses each one so you can judge the fit yourself.

The reason the comparison matters more here than in most specialties is structural. In chiropractic, Medicare does not mainly argue about how much to pay. It decides whether to pay at all, and a single two-character modifier carries that decision.

The short answer: compare chiropractic billing companies on whether they can prove what they do about the AT modifier, maintenance transitions, documentation under medical review, and aging claims. Ask for the process, not the promise. Any company can say it works denials. Ask it to describe how it finds the cause.

What makes chiropractic billing different?

Chiropractic billing is governed by a coverage rule that is unusually binary. Medicare covers manual manipulation to correct a subluxation, and it does not cover maintenance care. The claim itself has to declare which of the two the visit was, and the declaration is made with the AT modifier. Get it wrong and the claim is not reduced. It is denied.

CMS states the requirement directly in its billing and coding guidelines for chiropractic services: "For Medicare purposes, the AT modifier shall now be used only when chiropractors bill for active/corrective treatment." The same document sets out what happens when it is absent: "The AT modifier must not be placed on the claim when maintenance therapy has been provided. Claims without the AT modifier will be considered as maintenance therapy and denied." [1]

That is the part practices underestimate. An omitted modifier is not a blank field awaiting clarification. In chiropractic it is a positive statement that the visit was maintenance, and the denial follows automatically. CMS confirms the mechanism in MLN Matters SE1602: "MACs deny chiropractic claims for 98940, 98941, or 98942, with a date of service on or after October 1, 2004, that do not have the AT modifier." [2]

Three consequences follow, and they are what a billing company for this specialty has to be built around.

The denial is automatic, so prevention beats appeal. There is no human to persuade at the point of the edit. A company that is good at writing appeal letters is solving the problem one stage too late.

A second, different denial can arrive later. Using the modifier does not settle the question. CMS is explicit: "the presence of the AT modifier may not in all instances indicate that the service is reasonable and necessary. As always, MACs may deny the claim if a medical review determines that the medical record does not support active/corrective treatment." [2] So a chiropractic practice can be denied by a rule with no human involvement, and separately denied by a human who read the note and disagreed. Those are different failures needing different responses.

The clinical answer expires. Active treatment describes where a patient sits in an episode of care, not a permanent status. CMS puts the boundary plainly: "Once the maximum therapeutic benefit has been achieved for a given condition, ongoing maintenance therapy is not considered to be medically necessary under the Medicare program." [3] Patients often keep attending after that point, and often benefit from attending. The payability does not follow them.

There is one published figure worth knowing, and it is worth reading carefully rather than as a headline. The CMS Comprehensive Error Rate Testing programme, which measures improper payments in Medicare fee for service, "reported a 41 percent error rate for chiropractic services. Most of those errors were due to insufficient documentation or documentation errors." [2] That is an improper payment error rate, not a denial rate, and it is the figure CMS cited when it explained why it was reissuing guidance on the AT modifier. What it indicates is where the risk concentrates in this specialty: the record behind the claim.

What should a chiropractic practice look for in a billing company?

Compare companies against criteria that reflect how chiropractic claims actually fail, rather than generic billing features. The table below is the framework, and the rest of this article explains the reasoning behind each row.

What to compareWhy it matters in chiropracticWhat to ask for
AT modifier controlsAn omission is read as maintenance and denied automaticallyDescribe the check that happens before a claim is transmitted
Maintenance transition trackingCoverage ends at maximum therapeutic benefit, but attendance often does notHow do you flag a patient who has passed that point?
Denial root cause analysisAutomatic edits and medical review denials need different responsesShow how you separate the two and what changes after
Documentation reviewCERT attributes most chiropractic errors to documentationDo you read notes, or only claim data?
A/R follow upHigh claim volume at low value each; small balances age quietlyWhat is worked, in what order, and who decides?
Revenue visibilityA schedule shows visits, not payabilityWhat will we be able to see without asking?
Credentialing and enrolmentPayer enrolment gaps stop payment regardless of codingIs it included, extra, or not offered?
Technology compatibilityMost practices want to keep their current systemCan you work inside what we already run?
AccountabilitySmall claims make it easy for individual failures to go unownedWho answers when a claim is unresolved?

What causes chiropractic claims to be denied?

Chiropractic claims fail in a small number of repeatable ways, and almost all of them describe an adjustment that was genuinely delivered and genuinely documented. The clinical care is rarely the problem.

  • The AT modifier was omitted on an active treatment claim. The visit was corrective care. The claim reads as maintenance and is denied by rule.
  • The AT modifier kept going out after the episode ended. Maximum therapeutic benefit was reached earlier, and the record will not support the assertion if it is reviewed.
  • The documentation records what was done rather than what changed. Under medical review, notes that do not show progress against the condition struggle to support active treatment.
  • Diagnosis coding does not carry the claim. CMS states that claims should include a primary diagnosis of subluxation and a secondary diagnosis reflecting the neuromusculoskeletal condition, and that "Claims submitted without diagnosis codes will be denied as being not medically necessary." [2][3]
  • The service sits outside the benefit. CMS describes chiropractic coverage as "a limited benefit. The coverage is limited to manual manipulation for the treatment of subluxation." [3]
  • The claim was never worked after it was denied. At low value per claim, the economics of follow up are exactly what decide whether anyone chases it.

Rules vary by payer, plan, state and contract, and commercial payers do not all mirror Medicare. The published rules above are Medicare's. Treat any single payer's policy as the thing to check, not assume.

Should a billing company provide denial root cause analysis?

Yes, and in chiropractic it matters more than in most specialties, because resubmission alone cannot fix the most common failure. If a claim was denied because the record does not support active treatment, sending the same claim again produces the same answer. The cause sits behind the claim, in the documentation and in where the patient actually is in their episode of care.

This is the distinction between denial management and claim root cause analysis. Denial management is the work of resolving denied claims. Claim root cause analysis is the work of establishing why the claim failed, whether the same cause is producing other failures, and what has to change for it to stop. A practice evaluating billing companies should ask for the second explicitly, because the first is what everyone advertises.

CareVixis provides this through VixisTrace™, which exists to answer why a claim failed rather than to resubmit it faster. In a chiropractic context, the useful output is the separation of the two denial types described above: the automatic modifier edit, which is a process failure, and the medical review denial, which is a documentation failure. They look similar on a remittance and need opposite responses.

Why does A/R follow up matter more than clean claim submission?

Submitting a clean claim is one stage of the revenue cycle, not the whole of it. Accounts receivable is the money a practice has earned and not yet been paid. The questions that decide whether it is collected are whether the claim was paid, whether it was paid correctly, why it was denied if it was, whether the same problem is recurring, and who is chasing it now.

Chiropractic has an A/R profile that makes this particularly easy to neglect. Claim volume is high and the value of each claim is comparatively low, so no individual unpaid claim is alarming enough to demand attention. They accumulate quietly. A practice can be busy, well run and clinically excellent while a growing share of its completed work sits unpaid, because nothing in the daily schedule surfaces it.

When comparing companies, ask what gets worked and in what order. A company that works the largest balances first will, in this specialty, systematically ignore most of your aging claims. Ask who decides, how old a claim gets before someone looks at it, and what happens to a claim nobody has been able to resolve.

What should a chiropractic practice be able to see?

A practice schedule shows visits booked, visits attended, notes signed and charges posted. It does not show where each patient sits against maximum therapeutic benefit, which claims went out with the AT modifier, which denials were the automatic rule and which were medical review, or how much of the day's work is likely to be unpayable.

Revenue visibility is the ability to answer those questions without asking someone to go and find out. CareVixis provides it through VixisIQ™, its revenue intelligence capability, which is included with CareVixis revenue cycle management rather than sold as a separate recurring product. What any practice can actually see depends on the data that practice is able to make available, and CareVixis does not promise a particular metric or finding before that data is confirmed.

It is worth being precise about the limit here. If a practice keeps its existing systems, CareVixis does not replace the dashboards its current vendors already provide and does not promise to improve them. What it can commit to for every practice, regardless of stack, is the accountability answer: where a claim is, what happened, what was done, who owns it and what happens next.

Can a chiropractic practice keep its existing EHR?

In most cases yes. CareVixis works inside the billing environment a practice already uses where that is technically feasible, and keeping an existing system is a supported outcome rather than a fallback. Changing billing companies and changing clinical software are two separate decisions, and a practice should be suspicious of any arrangement that forces them to happen together.

CareVixis publishes what it works with rather than claiming universal compatibility. There are documented pages for the chiropractic platforms practices most often run, including ChiroTouch and eight others, at the chiropractic EHR hub, along with the wider integrations hub and the clearinghouse pages. If a platform is not listed, the honest answer is that it needs checking, not that it is supported.

Where does credentialing fit?

Credentialing is the process of a payer verifying a provider's qualifications, and payer enrolment is the process of being set up to bill that payer and be paid. Neither is billing, and both stop payment cold when they are incomplete. A correctly coded chiropractic claim from a provider who is not enrolled with that payer does not get paid, and the coding was never the issue.

This matters when a practice adds an associate, opens a location or changes its payer mix, which in chiropractic tends to happen more often than in hospital based specialties. When comparing companies, establish whether credentialing is included, priced separately or not offered at all, because discovering the answer later is expensive. CareVixis offers it as VixisCred™.

How does CareVixis approach chiropractic revenue management?

CareVixis is a revenue management company rather than a claim submission vendor. The distinction is the set of questions it takes responsibility for. Submitting the claim is the first of them, not the whole job. Whether it was paid, whether it was paid correctly, why it was denied, whether the cause is recurring, what is being done about it and who owns the answer are the rest.

Applied to chiropractic specifically, that means treating the AT modifier as a process control rather than a coding habit, treating the maintenance transition as something to be watched per patient rather than discovered at denial, treating a medical review denial as a documentation signal rather than a resubmission task, and treating small aging balances as worth working because collectively they are most of the money.

CareVixis operates a United States based service model without outsourcing. Its wider capabilities across revenue cycle management, credentialing, practice technology, communications, operations and growth exist so that a practice has one accountable team rather than several vendors who each own a fragment. Not every practice needs all of it, and it is not offered as a package a practice must take whole.

How much does chiropractic medical billing cost?

Billing and revenue cycle companies most commonly price as a percentage of collections, though what the percentage applies to varies and is the thing to pin down. Ask whether the percentage is charged on insurance collections only or on patient payments as well, what happens to legacy accounts receivable handed over at the start, and which costs are passed through rather than included.

CareVixis publishes its current pricing, including what the percentage applies to, on its pricing page. Figures change, so the pricing page is the authority rather than any article. CareVixis also publishes the terms of its guarantees in full, at Results Guarantee terms and 90-Day Satisfaction Guarantee terms. Read the terms rather than a summary of them, including the eligibility conditions and what is excluded.

Is CareVixis a good fit for every chiropractic practice?

No, and a practice should be wary of any company that says otherwise. CareVixis tends to fit a chiropractic practice that is carrying denials it has not got to the bottom of, cannot see the state of its aging claims without someone compiling a report, has grown past the point where one person holds the whole revenue picture, or wants one accountable team instead of several vendors.

It is a weaker fit in some situations, and they are worth naming. A practice with an experienced in house biller who already tracks maintenance transitions patient by patient and works A/R systematically may be getting most of the benefit already. A practice whose real constraint is patient volume rather than collections should look at that first, because better billing does not fix an empty schedule. A practice in the middle of changing clinical software has enough disruption underway already.

The way to settle it is not to read a marketing page. It is to look at your own denial pattern and A/R ageing and see whether what you find describes a problem worth outsourcing.

What questions should you ask before signing?

  • Walk me through what happens in your process between a chiropractic visit being documented and the claim being transmitted. Where does the AT modifier get checked?
  • How would you know that one of our patients has passed maximum therapeutic benefit?
  • When a claim is denied, how do you establish the cause, and what changes as a result?
  • How do you tell an automatic modifier denial apart from a medical review denial, and do you handle them differently?
  • Do you read clinical documentation, or only claim and remittance data?
  • What is your order of work on aging claims, and what is the smallest balance you will pursue?
  • What will we be able to see ourselves, and what will we have to ask for?
  • Can we keep our current system and clearinghouse, and have you worked with them before?
  • Is credentialing included, priced separately, or not offered?
  • When a claim is stuck, who is accountable for resolving it, and how will we know?

Find Out What Your Own Claims Are Telling You

If you are not sure whether unresolved denials or aging accounts receivable are costing your chiropractic practice revenue, the CareVixis practice assessment is a short, free way to find out. No email required, and no sales call needed to see the result.

Take the Free Practice Assessment

Frequently asked questions

What is the best billing company for a chiropractic practice?

There is no single billing company that is best for every chiropractic practice. Compare companies on chiropractic specific knowledge, AT modifier controls, denial root cause analysis, documentation review, accounts receivable follow up, revenue visibility, credentialing support, technology compatibility and accountability. Evaluate CareVixis against those same criteria rather than treating any ranking as settled.

Why are chiropractic claims denied without the AT modifier?

Because Medicare treats the absence of the modifier as a statement that the visit was maintenance care, which it does not cover. CMS states that claims without the AT modifier will be considered as maintenance therapy and denied, and that MACs deny claims for 98940, 98941 or 98942 dated on or after 1 October 2004 that do not carry it.

Does using the AT modifier guarantee a chiropractic claim gets paid?

No. CMS states that the presence of the AT modifier may not in all instances indicate that the service is reasonable and necessary, and that Medicare Administrative Contractors may deny a claim if a medical review determines the medical record does not support active or corrective treatment. The modifier is an assertion about the documentation, and the documentation is what is examined.

When does Medicare stop covering chiropractic care?

Coverage of chiropractic services under Medicare is a limited benefit restricted to manual manipulation for the treatment of subluxation. CMS states that once maximum therapeutic benefit has been achieved for a given condition, ongoing maintenance therapy is not considered medically necessary under the Medicare program. Patients often continue attending after that point, but the visits stop being payable.

Can I keep my chiropractic EHR if I change billing companies?

In most cases yes. CareVixis works inside the billing environment a practice already uses where that is technically feasible, and documents the chiropractic platforms and clearinghouses it works with rather than claiming universal compatibility. Changing billing companies and changing clinical software are separate decisions and do not have to happen together.

Should a billing company work our old accounts receivable?

Ask directly, because practice varies. Establish whether legacy accounts receivable is worked at all, how it is charged, what order claims are worked in, and the smallest balance the company will pursue. In chiropractic this matters more than in most specialties, because claim values are low and a company that works the largest balances first will ignore most of your aging claims.

How much do chiropractic billing companies charge?

Most price as a percentage of collections, but the basis varies and is what to pin down. Ask whether the percentage applies to insurance collections only or to patient payments too, how legacy accounts receivable is treated, and which costs are passed through. CareVixis publishes its current pricing, including what the percentage applies to, on its pricing page.

What is claim root cause analysis?

Claim root cause analysis is the work of establishing why a claim failed, whether the same cause is producing other failures, and what has to change to stop it recurring. It is different from denial management, which resolves the denied claim itself. CareVixis provides root cause analysis through VixisTrace™, because resubmitting a claim whose record does not support it produces the same result.

Sources

Statements attributed to Medicare above are quoted from the following CMS publications. Rules vary by payer, plan, state and contract, and commercial payers do not necessarily follow Medicare policy.

  1. Centers for Medicare & Medicaid Services, Billing and Coding Guidelines for Chiropractic Services (L34585).
  2. Centers for Medicare & Medicaid Services, MLN Matters SE1602, Use of the AT modifier for Chiropractic Billing, revised 7 May 2019. The Comprehensive Error Rate Testing figure quoted above appears in this article.
  3. Centers for Medicare & Medicaid Services, Billing and Coding: Chiropractic Services (A56273), revised 28 August 2025.