Chiropractic medical necessity documentation for ongoing care
Medicare’s chiropractic benefit is one of the narrowest in the programme, and the improper payment rate has historically been one of the highest. Those two facts are connected, and both run through the documentation.
Chiropractic medical necessity documentation has to show active or corrective treatment of a subluxation rather than maintenance. Medicare pays chiropractors for manual manipulation of the spine to correct a subluxation and nothing else, and the record has to demonstrate the patient is still improving.
Medicare covers exactly one thing from a chiropractor, and a great deal of confusion follows from not knowing that.
The benefit is narrow by regulation, not by contractor interpretation. Once you read the rule, most of the billing questions answer themselves and the remaining question is entirely about the record.
That remaining question is the expensive one. Federal auditors have looked at it repeatedly and what they found should shape how a practice documents.
Manual manipulation is the whole benefit
Start here, because everything else follows from it.
42 CFR 410.21 states that Medicare Part B pays only for a chiropractor’s manual manipulation of the spine to correct a subluxation if the subluxation has resulted in a neuromusculoskeletal condition for which manual manipulation is appropriate treatment. The same section states that Medicare Part B does not pay for X-rays or other diagnostic or therapeutic services furnished or ordered by a chiropractor.
Read the second sentence carefully. It is not only that X-rays are excluded; it is that diagnostic and therapeutic services ordered by a chiropractor are excluded too. The Medicare Benefit Policy Manual puts the coverage side as treatment by means of manual manipulation of the spine to correct a subluxation, provided such treatment is legal in the state where performed.
A practice that bills Medicare for anything else is not misreading a grey area. There is no grey area here.
Subluxation documentation, and the exam that replaced the X-ray
This is the change many practices have not absorbed, and it works in the practice’s favour.
CMS’s MLN Matters article on Medicare coverage for chiropractic services sets out the P.A.R.T. standard: two of four criteria, one of which must be asymmetry or misalignment, or range of motion abnormality. The four are pain or tenderness, asymmetry or misalignment, range of motion abnormality, and tissue tone, texture or temperature changes.
So a physical exam demonstrates the subluxation. An X-ray is not required, which matters because an X-ray a chiropractor orders is not payable anyway. The same article requires the primary diagnosis to be subluxation including the level, and is explicit that symptoms must correlate to that level — pain alone is not sufficient.
- Two of the four P.A.R.T. criteria, and one of them has to be asymmetry or misalignment, or range of motion abnormality. Tenderness plus tissue tone changes is two criteria and does not satisfy the rule.
Maintenance therapy is the line, and it moves
The distinction that decides coverage is not acute versus chronic. It is improving versus not improving.
CMS describes a condition as acute when the patient is being treated for a new injury, with improvement or arrest of progression expected, and chronic when it is not expected to significantly improve but continued therapy can be expected to result in some functional improvement. Chiropractic maintenance therapy is defined as therapy performed to maintain or prevent deterioration of a chronic condition, and the Benefit Policy Manual states it is not considered medically reasonable or necessary and is therefore not payable.
CMS’s documentation checklist for chiropractic doctors, April 2025, puts the boundary plainly: once the injury is stable, more treatment is maintenance therapy and is not covered. For chronic subluxation it states Medicare covers care as long as the patient is improving.
One widely repeated claim is worth correcting. CMS’s treatment parameters say an acute subluxation may require as many as three months of treatment but some require very little. That is a parameter, not a three-month cap, and chronic conditions may require a longer treatment time though not at higher frequency.
The active treatment modifier, and what it does not do
The AT modifier is simultaneously mandatory and insufficient, which is an awkward combination to build a workflow around.
CMS’s article on the importance of using the AT modifier states that it defines the difference between active treatment and maintenance treatment, that every chiropractic claim for the manipulation codes with a date of service on or after 1 October 2004 should include it if active or corrective treatment is being performed, and that it must not be used for maintenance therapy. Contractors deny claims without it.
The same article stresses that the modifier alone does not establish coverage: the record must document active or corrective treatment. So omitting AT guarantees denial and including it guarantees nothing. A system that appends AT automatically to every manipulation claim has converted a clinical judgement into a default, which is precisely the pattern an auditor looks for. This is the kind of configuration decision that belongs in EHR workflow optimization rather than in a billing macro.
Worried your notes would not survive a review?
We read a sample of your records the way a reviewer would, check your templates and claim logic, and hand you written findings.
What the audits found
It is worth knowing the scale of federal attention here, because it explains why contractors behave as they do.
OIG’s 2016 report on Medicare payments for chiropractic services found that, on the basis of its sample, an estimated 358.8 million dollars, approximately 82 per cent of the 438 million dollars paid by Medicare for chiropractic services, was unallowable. Of 105 sampled services, 11 were allowable and the remaining 94 were not, because they were medically unnecessary.
A separate OIG report found that in 2013, 76 million dollars of Medicare payments for chiropractic services were questionable, that almost half of the questionable payments were for claims suggestive of maintenance therapy, and that just 2 per cent of chiropractors were responsible for half of the questionable payments. It also recorded that from 2010 to 2014 the improper payment rate for chiropractic services rose from 43.9 to 54.1 per cent while the overall Part B improper payment rate stayed between 9.9 and 12.9 per cent.
The treatment plan is where this is won
Every one of those findings points back to the same document.
CMS’s documentation guidance asks the initial evaluation to record the date of initial treatment, a description of the current illness, and symptoms related to the level of subluxation causing the patient to seek treatment, along with an evaluation of the musculoskeletal and nervous system through physical exam and the specific manipulated areas and levels of the spine. The treatment plan items — frequency and duration of visits, specific treatment goals, and objective measures to evaluate treatment effectiveness — are marked as recommended rather than required, and they are nonetheless the part that decides an audit.
That is because subsequent visits are expected to include an assessment of change in the patient’s condition since the last visit and an evaluation of treatment effectiveness addressing the objective measures included in the treatment plan. If the plan contains no objective measures, there is nothing for the later notes to address, and the record cannot show improvement even when the patient is improving.
- Write objective measures into the plan. Later notes have to address them.
- Record the subluxation level, and correlate symptoms to it. Pain alone is not enough.
- Make AT a decision, not a default. Automatic appending is an audit pattern.
- Name the point care becomes maintenance. Better you than a reviewer.
Qventive works as a chiropractic medical necessity documentation company for New Jersey practices, usually within IT support for chiropractic practices rather than as a standalone engagement.
Where the documentation depends on how templates and claim logic are configured, that work runs through chiropractic EHR and IT support, and the record-keeping decisions belong alongside your HIPAA risk analysis.
Chiropractic documentation: common questions
What does Medicare actually cover from a chiropractor?
Do we still need an X-ray to demonstrate subluxation?
When does covered care become maintenance therapy?
What are the HIPAA implications for a chiropractic practice?
How should we handle a patient who wants to continue care after coverage ends?
Let’s meet
Qventive supports chiropractic practices across New Jersey. Thirty years healthcare-exclusive, from our office in Hackensack.
- Medicare Part B pays only for manual manipulation of the spine to correct a subluxation; does not pay for X-rays or other diagnostic or therapeutic services furnished or ordered by a chiropractor. ecfr.gov
- P.A.R.T.: two of four criteria, one of which must be asymmetry/misalignment or range of motion abnormality; primary diagnosis must be subluxation including the level. cms.gov
- The AT modifier defines the difference between active treatment and maintenance treatment; do not use it for maintenance therapy. cms.gov
- Once the injury is stable, more treatment is maintenance therapy and is not covered; acute subluxation may require as many as three months of treatment. cms.gov
- In 2013, 76 million dollars were questionable; almost half suggestive of maintenance therapy; 2 per cent of chiropractors responsible for half. oig.hhs.gov