Overview
Chiropractic has a narrower covered scope than almost any other specialty, and the line between active treatment and maintenance care decides whether a claim pays at all. Medicare covers spinal manipulation only when it's active treatment aimed at functional improvement, signalled by the AT modifier, and covers nothing else the practice performs. Add manual therapy that bundles into the manipulation, and x-rays that are no longer required, and the same handful of denials repeat across the entire patient panel.
Why these claims get denied
The denial reasons we see most often in chiropractic, and what our pre-billing checks are built to catch.
- AT modifier missing, so the claim is treated as non-covered maintenance care
- Care continued past the point the documentation supports functional improvement
- 98941 or 98942 billed without documenting each spinal region treated
- Manual therapy bundled into the manipulation without a distinct region documented
- Therapies and modalities billed to Medicare, which does not cover them for chiropractors
- ABN not obtained before non-covered services, leaving the balance unbillable to the patient
- Initial visit missing the PART examination elements the payer requires
A real claim from this specialty
The kind of claim we see every week in chiropractic, and the denial that usually follows it.
Sample claim · single date of serviceChiropractic
98941 ATManipulation, 3–4 spinal regions$65.00
97140 59Manual therapy, 15 minutes$46.00
97012Mechanical traction$22.00
Denied: manual therapy bundled into manipulation
How we resolved itThe note documented manual therapy on a region distinct from the levels manipulated. We appealed with the region documentation and the NCCI modifier rationale; 97140 was paid.
What we do for your practice
- AT modifier applied wherever the documentation supports active treatment
- Treatment plan and progress note review so active care is defensible on audit
- Region documentation checked against the manipulation level billed
- Modifier 59 or X-modifier logic applied when manual therapy is genuinely distinct
- ABN workflow so non-covered services become collectible patient responsibility
- Medicare versus commercial scope mapped so nothing goes to a payer that won't cover it
- Visit-frequency monitoring against payer limits before they're exceeded
Codes and rules that matter here98940 (1–2 regions), 98941 (3–4 regions), 98942 (5 regions) spinal manipulation; 98943 extraspinal; 97012, 97014, 97110, 97140 therapies and modalities; modifiers AT, GA, GP, and 59/X.
Common questions
What does the AT modifier actually do?
It tells Medicare the manipulation is active treatment intended to improve function, not maintenance. Without it the claim is processed as non-covered. It isn't a formality. The documentation has to show a treatment goal and measurable progress toward it.
When does care become maintenance?
When the documentation stops showing functional improvement and the treatment is sustaining the current state. That care isn't covered by Medicare, but it is billable to the patient if you obtain an ABN first. Without the ABN you can't collect from anyone.
Why does manual therapy keep bundling into the adjustment?
NCCI edits treat 97140 as part of the manipulation when performed on the same region. It's separately payable only when the note shows it was performed on a distinct region, with modifier 59 or the appropriate X-modifier appended.