Home Specialties We Serve Chiropractic Medical Billing
According to CMS's own 2024 compliance data, chiropractic carries a 33.6% improper payment rate — the highest of any outpatient specialty — with 95.5% of those errors caused entirely by insufficient documentation. Chiropractic audits increased 47% between 2022 and 2024. XMB's chiropractic billing is documentation-first, modifier-compliant, and built around the AT modifier rules and active care distinction that drive this statistic.
Chiropractic medical billing centers on spinal manipulation codes (98940–98942), selected by the number of spinal regions treated, with the AT (Active Treatment) modifier required on every Medicare CMT claim to distinguish active care from maintenance care. It is one of the most heavily audited and denial-prone specialties in all of healthcare — with a 30% initial denial rate nearly three times the national average. XMB provides HIPAA-compliant chiropractic billing in all 50 U.S. states with a 99.99% clean claim acceptance rate and a billing team trained in the AT modifier rules, active vs. maintenance care distinction, ABN workflow, and adjunctive therapy coding that determine whether chiropractic claims are paid or denied.
Chiropractic Medical
Billing Services
No specialty in healthcare is more scrutinized by Medicare — or more likely to face audit — than chiropractic. The AT modifier, the active vs. maintenance care distinction, and spinal region documentation are not administrative details. They are the entire basis on which every chiropractic claim is paid or denied.
How CPT Codes 98940, 98941, and 98942 Are Selected
Chiropractic manipulative treatment (CMT) codes are selected by the number of spinal regions treated — and the documentation must specifically name each region to support the billed code. Billing 98942 without all five regions documented in the SOAP note is upcoding.
The 5 Spinal Regions for Chiropractic Billing
C1 through C7 vertebral segments. Commonly treated for neck pain, headaches, whiplash, and cervicogenic conditions. Must be specifically documented in the SOAP note as a treated region.
T1 through T12 vertebral segments. Treated for mid-back pain, rib dysfunction, thoracic outlet syndrome, and postural conditions. Cervical + Thoracic together = 2 regions → CPT 98940.
L1 through L5 vertebral segments. The most frequently treated region — low back pain is the #1 reason patients visit chiropractors. Cervical + Thoracic + Lumbar = 3 regions → CPT 98941.
Sacral vertebral segments. Often co-treated with lumbar for sacroiliac joint dysfunction. Adding Sacral to a 3-region treatment = 4 regions → still CPT 98941 (3-4 regions).
Pelvic vertebral and joint segments. All five regions documented and treated = CPT 98942. Requires very clear medical necessity documentation for all five regions — payers scrutinize 98942 claims most heavily.
The primary diagnosis on every chiropractic CMT claim must be a spinal subluxation code from the M99.0x series: M99.01 (cervical), M99.02 (thoracic), M99.03 (lumbar), M99.04 (sacral). This is non-negotiable for Medicare compliance. Supporting diagnoses for the patient's presenting condition — M54.5 (low back pain), M54.2 (cervicalgia), S13.4 (sprain of ligaments of cervical spine) — are added as secondary codes. Using only a pain code without a subluxation code as the primary diagnosis is a leading chiropractic Medicare denial cause. Source: CMS.gov · AAPC.
The 6 Modifiers That Govern Chiropractic Medicare Billing
Improper modifier use accounts for 31% of chiropractic claim denials. Each modifier has a specific clinical trigger — using the wrong one, or omitting the required one, is among the most expensive billing errors in the specialty.
Active Treatment
Required on every Medicare CMT claim (98940–98942) when care is active and corrective. Without AT, automatic denial — no adjudication. Never use AT when care has become maintenance. Medicare-specific modifier.
Example: Patient with acute lumbar subluxation receiving CMT for measurable functional improvement → bill 98941-AT every visit during active care phase.
ABN on File — Expected Denial
Used when Medicare is expected to deny a service as not medically necessary and the patient has signed an Advance Beneficiary Notice (ABN). Allows the practice to collect from the patient when the Medicare claim is denied. GA protects the practice from writing off the service.
Example: Patient reaching maximum benefit who wants to continue maintenance CMT. Sign ABN → bill 98940-GA → Medicare denies → patient pays directly.
Expected Denial — No ABN
Indicates the provider expects Medicare to deny the claim but no ABN was obtained. The provider cannot collect from the patient. GZ is a compliance declaration — it signals the service is being submitted knowing it will be denied without financial liability shift to the patient.
Example: Maintenance CMT performed without obtaining ABN first → bill 98940-GZ → claim denied → cannot collect from patient. Prevents ABN violation but loses revenue.
Statutorily Non-Covered Service
Used for services Medicare never covers by statute — extraspinal manipulation (98943), massage therapy, acupuncture, certain diagnostic imaging, and physical therapy modalities billed by a chiropractor. When billing physical medicine codes (97010–97530), both GY and GP modifiers are required. Patient is always responsible.
Example: Chiropractor performs extremity manipulation (98943) on a Medicare patient → bill 98943-GY → Medicare denies → patient is financially responsible.
Voluntary ABN — Frequency Exceeded
Used when a voluntary ABN is issued because the service exceeds frequency limits or is transitioning from active to maintenance care. GX differs from GA in that the service may technically be covered but frequency or medical necessity thresholds have been reached. Relatively uncommon in chiropractic but important for high-frequency care plans.
Example: Patient receiving CMT more frequently than MAC frequency guidelines support → issue voluntary ABN → bill with GX → patient informed of potential non-coverage.
Separate E&M Same Day
Required on an E&M code when a separately identifiable evaluation and management service is performed on the same day as chiropractic manipulation — commercial payers only. Medicare does NOT cover chiropractor-billed E&M visits at all. Without Modifier 25, the E&M is bundled into the CMT code and denied by commercial payers.
Example: New patient initial evaluation + CMT same visit (commercial payer) → bill 99203-25 + 98941. Modifier 25 on the E&M is required or the visit level is lost.
Active Care vs. Maintenance Care — The Line That Defines Every Chiropractic Claim
This single distinction — whether a patient is in active care or maintenance care — determines whether a Medicare chiropractic claim is paid, denied, or flagged for audit. 64% of chiropractic overpayment recoveries involve billing maintenance care as active treatment.
Active Care
Medicare Covered — Use AT Modifier- Treatment directed at correcting a subluxation with expectation of measurable improvement
- Objective progress documented at every visit — ROM, pain scale, functional capacity
- Clinical notes show the patient is trending toward specific functional goals
- Treatment frequency is medically justified and expected to taper as patient improves
- Treatment plan specifies projected discharge criteria or expected visit frequency
- Acute subluxation: typically expected to resolve or improve within weeks to 3 months
- Chronic subluxation: periodic re-exacerbations with documented improvement between them
Maintenance Care
NOT Medicare Covered — Remove AT, Obtain ABN- Treatment that seeks to maintain the patient's current condition or prevent deterioration
- No further measurable functional improvement is expected from continued care
- Patient has reached maximum therapeutic benefit — future treatment preserves, not improves
- Notes show plateau in progress metrics — pain scores and ROM unchanged over 2–4 visits
- Patient chooses to continue care for comfort, wellness, or preventive reasons
- Continuing to bill AT modifier at this stage is billing fraud under CMS guidelines
No measurable progress over 2–4 consecutive visits in functional objective metrics. Progress plateau is documented clearly in the clinical note.
Advance Beneficiary Notice of Noncoverage (ABN) prepared and presented to patient. Patient informed that Medicare will not cover ongoing maintenance care. Patient signs ABN.
AT modifier removed from CMT codes. GA modifier applied to indicate ABN is on file. Claim submitted to Medicare with GA to generate a denial that allows the practice to collect from the patient directly.
Upon Medicare denial, the signed ABN enables the practice to collect the Medicare-approved fee from the patient. ABN kept on file as documentation protection in the event of audit.
What Medicare Covers — and Exactly What It Does Not — in Chiropractic
Chiropractic CPT Code Quick Reference
| Code | Description |
|---|---|
| Chiropractic Manipulative Treatment (CMT) | |
| 98940 | CMT — spinal, 1–2 regions + AT for Medicare |
| 98941 | CMT — spinal, 3–4 regions + AT for Medicare |
| 98942 | CMT — spinal, 5 regions + AT for Medicare |
| 98943 | CMT — extraspinal (extremities) NOT Medicare covered — GY required |
| Adjunctive Therapies (Commercial Only — GY for Medicare) | |
| 97010 | Hot/cold pack application |
| 97012 | Mechanical traction (spine or extremities) |
| 97014 | Electrical stimulation — unattended |
| 97018 | Paraffin bath |
| 97032 | Electrical stimulation — attended |
| 97035 | Ultrasound therapy |
| 97110 | Therapeutic exercises — timed, 15-min units |
| 97124 | Massage therapy — timed, 15-min units |
| 97140 | Manual therapy techniques — timed, 15-min units |
| E&M Visits (Commercial Only — Not Medicare) | |
| 99202–99205 | New patient E&M — with Modifier 25 if same day as CMT (commercial) |
| 99211–99215 | Established patient E&M — with Modifier 25 if same day as CMT (commercial) |
| Primary ICD-10 Subluxation Codes (M99.0x — Required for Medicare) | |
| M99.01 | Segmental and somatic dysfunction — cervical region |
| M99.02 | Segmental and somatic dysfunction — thoracic region |
| M99.03 | Segmental and somatic dysfunction — lumbar region |
| M99.04 | Segmental and somatic dysfunction — sacral region |
Medicare Chiropractic: Covered vs. Not Covered
| Service | Medicare Coverage |
|---|---|
| Covered by Medicare Part B | |
| 98940 / 98941 / 98942 + AT | COVERED — Active spinal manipulation to correct subluxation. 80% after $283 Part B deductible. No annual visit cap but every visit must show medical necessity. |
| NOT Covered by Medicare | |
| E/M Visits (99202–99215) | NOT COVERED — Medicare does not cover E&M services billed by chiropractors. Bill with GY. Patient is financially responsible. |
| X-rays ordered by chiropractor | NOT COVERED — Imaging ordered by the chiropractor is excluded. Bill with GY modifier. Note: X-rays ordered by a physician to confirm subluxation may be covered separately. |
| Extraspinal manipulation (98943) | NOT COVERED — Extremity manipulation is statutorily excluded from Medicare. Bill 98943-GY. Patient pays. |
| Physical therapy modalities (97010–97530) | NOT COVERED — Requires both GY and GP modifiers when billed by a chiropractor. Patient pays. |
| Massage therapy (97124) | NOT COVERED — Excluded from Medicare chiropractic coverage. Bill with GY. Patient pays. |
| Maintenance CMT (no AT) | NOT COVERED — Obtain signed ABN, bill with GA modifier. Patient is financially responsible after Medicare denial. |
Source: CMS Chiropractic Services Compliance Page · AAPC. Medicare pays 80% of approved amount after the $283 Part B deductible (2026).
Chiropractic Services XMB Bills — Complete Coverage
From a spinal adjustment with the AT modifier to a new patient evaluation with Modifier 25, every chiropractic service has specific documentation requirements and payer rules. XMB handles all of them with certified compliance precision.
Spinal Manipulation (CMT)
Core chiropractic service billed under 98940, 98941, or 98942 based on documented spinal regions treated. XMB verifies region count against the SOAP note before code selection, confirms AT modifier on every Medicare active treatment claim, and verifies subluxation M99.0x as the primary diagnosis — preventing the three most common CMT denial causes in a single step.
New Patient Evaluation & E&M Visits
For commercial insurance patients, initial evaluations and re-evaluations are billed using E&M codes (99202–99215) with Modifier 25 when CMT is performed on the same day. Medicare does not cover chiropractor-billed E&M — XMB applies GY for Medicare patients to ensure correct claim processing and proper secondary billing.
Active vs. Maintenance Care Management
XMB monitors every patient's clinical progress to identify when maximum therapeutic benefit has been reached. When the plateau is documented, XMB initiates the ABN workflow — preparing the ABN notice, applying the GA modifier, and transitioning to patient-pay billing — protecting the practice from both revenue loss and compliance exposure simultaneously.
Physical Therapy Modalities
Adjunctive services — electrical stimulation (97014/97032), ultrasound (97035), hot/cold packs (97010), mechanical traction (97012), and manual therapy (97140) — are billable to commercial payers. For Medicare patients, these services require both the GY and GP modifiers. XMB applies the correct modifier combination for each payer type and ensures timed codes (97110, 97124, 97140) are billed in correct 15-minute units.
Extraspinal Manipulation
Extremity manipulation (98943) — shoulder, elbow, hip, knee, ankle — is separately billable to commercial payers. For Medicare, 98943 is statutorily excluded and must be billed with the GY modifier so that secondary insurance or the patient can be billed appropriately. XMB ensures 98943 is never submitted to Medicare without GY, preventing erroneous Medicare payments and compliance risk.
Personal Injury & Auto Accident Claims
Chiropractic billing for motor vehicle accident (MVA) and personal injury (PI) cases involves coordination of benefits with auto insurance, lien billing, and detailed SOAP note documentation supporting functional limitations and causation. XMB manages PI and MVA billing workflows including ICD-10 trauma codes, functional outcome measures, and narrative report requirements for legal case support.
Telehealth & Virtual Consultations
Post-discharge telehealth consultations, care plan reviews, and follow-up visits for chiropractic patients are billable to commercial payers under appropriate E&M codes with POS 02 or 10. XMB stays current with state-specific chiropractic telehealth rules and commercial payer telehealth coverage policies.
Progress Exams & 12-Visit Re-Evaluation
Medicare requires reassessment every 12 visits or 30 days to document continued medical necessity. This re-evaluation must show at least 15% functional improvement and revised treatment goals. XMB tracks the 12-visit re-evaluation milestone for every Medicare patient and flags when reassessment is due — preventing the CMS statistic that 78% of visits beyond 12 are denied for ongoing medical need without updated documentation.
What Every Chiropractic SOAP Note Must Contain — And the 7 Denials It Prevents
The 7 SOAP Note Elements Required for Every Chiropractic Visit
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Subjective — Chief Complaint with MeasurablesPain location, severity on a numeric scale (0–10 VAS), duration, and functional limitations — specifically what the patient cannot do because of the condition, not just pain severity. Functional limitation documentation is what distinguishes active care from wellness visits.
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Objective — Musculoskeletal FindingsRange of motion measurements (flexion, extension, rotation in degrees), orthopedic and neurological test results, palpation findings, muscle spasm/tenderness documentation. These metrics are what auditors cross-reference to verify active treatment status at the next visit.
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Response to Treatment — Documented ProgressComparison to previous visit's objective findings. Is the ROM improving? Is the pain score decreasing? If no progress is noted, the note must explain why and what treatment modification is planned — otherwise this visit is evidence of maintenance care.
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Subluxation Findings — Required for MedicareSpecific identification of subluxation — the altered alignment or function of a spinal segment — with supporting evidence from physical examination or imaging. M99.0x code must be supported by documented subluxation findings, not just pain complaints.
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Treatment Performed — Regions NamedSpecific spinal regions treated during the CMT session must be named in the note. "Adjusted spine" does not support 98942. "CMT performed to cervical, thoracic, lumbar, sacral, and pelvic regions" supports 98942. Region-by-region documentation is the direct basis of CMT code selection.
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Assessment — Diagnosis with ICD-10 SpecificityPrimary diagnosis must be the subluxation code (M99.0x). Secondary diagnoses reflect the patient's condition — M54.5 (low back pain), M54.2 (cervicalgia), G89.29 (chronic pain). Using only pain codes as primary diagnosis without the subluxation code causes Medicare claim denial.
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Plan — Goals, Frequency, Expected OutcomesTreatment plan with specific functional goals (target ROM, target pain score, return to activity milestones), projected visit frequency, and expected discharge criteria. Updated at every 12-visit reassessment interval per Medicare requirements.
Top 7 Chiropractic Billing Denial Reasons
The patterns driving the 30% initial denial rate — and how XMB prevents each one systematically.
- Missing AT Modifier on Medicare CMT ClaimsWithout the AT modifier on 98940, 98941, or 98942, the Medicare claim is automatically denied by the MAC without adjudication. This single omission accounts for a significant portion of all chiropractic Medicare denials and requires appeal for each affected claim.
- Maintenance Care Billed as Active CareUsing the AT modifier when the patient has reached maximum therapeutic benefit — with no documented functional improvement over multiple visits — is a compliance violation. 64% of chiropractic overpayment recoveries involve billing maintenance care as active treatment (2024 OIG data).
- CMT Code Billed for More Regions Than DocumentedBilling 98942 when the SOAP note only documents treatment in 3 regions, or 98941 when only 2 regions are named, is upcoding. Insurance payers use automated claim-review systems to flag region count mismatches between the CMT code and the documented note content.
- Pain Code as Primary Diagnosis — No Subluxation CodeMedicare requires the primary diagnosis to be a spinal subluxation code (M99.01–M99.04). Using M54.5 (low back pain) or M54.2 (cervicalgia) as the primary diagnosis without the M99.0x subluxation code results in automatic denial for Medicare claims.
- Adjunctive Therapy Codes Without Required ModifiersPhysical therapy modalities billed by a chiropractor to Medicare require both GY and GP modifiers. Omitting either modifier results in denial — and repeated billing of physical medicine codes without GY to a Medicare patient is a billing compliance violation.
- E&M Code Without Modifier 25 Same Day as CMTWhen a commercial payer E&M visit is billed on the same day as a chiropractic adjustment, Modifier 25 must be on the E&M code or the visit level is bundled into the CMT payment and denied. This is one of the most consistent commercial payer denial patterns in chiropractic.
- No Progress Documentation Beyond 12 VisitsCMS requires documentation of continued functional improvement — at least 15% improvement at reassessment — to justify ongoing active treatment after 12 visits. Without reassessment documentation, all subsequent visits are at high risk of denial as maintenance care regardless of the AT modifier presence.
How XMB Handles Chiropractic Billing — Step by Step
From your first onboarded day to your monthly performance report, here is exactly how XMB manages the chiropractic revenue cycle with modifier compliance and documentation-first precision.
Free Practice Assessment
XMB audits your CMT code selection, AT modifier usage, active vs. maintenance care documentation, ABN workflow, and denial patterns before the first claim is submitted.
EHR Integration
Integration with your chiropractic EHR — ChiroTouch, ECLIPSE, Genesis, Jane App, AdvancedMD — with no disruption to your clinical workflow or documentation process.
Documentation-First Coding
Certified coders verify spinal region count against the SOAP note, confirm subluxation primary diagnosis, apply AT modifier to every active Medicare CMT claim, and review adjunctive therapy codes for correct modifier pairing.
Active Care Monitoring & ABN
Patient progress tracked at the 12-visit milestone. When maximum benefit documentation is identified, ABN workflow initiated — notice prepared, GA modifier applied, patient-pay billing activated to protect practice revenue and compliance.
Denial Management & Audit Support
All denied claims worked within 48 hours. Medicare audit preparation and documentation package support provided. Appeals drafted with AT modifier compliance justification and functional improvement evidence.
Chiropractic Billing: In-House Staff vs. XMB
The true cost of chiropractic billing errors extends well beyond denied claims — incorrect AT modifier usage and insufficient documentation create audit exposure that generalist billers are not equipped to manage.
| Factor | In-House / Generalist Biller | XMB — Xecta Medical Billing |
|---|---|---|
| AT Modifier Compliance | Often omitted or misapplied — top Medicare denial cause | Applied to every active Medicare CMT claim — automatically verified |
| Clean Claim Rate | ~70% (chiropractic below-average denial rate) | 99.99% |
| Active vs. Maintenance Monitoring | Maximum benefit often missed — AT used beyond compliance threshold | 12-visit milestones tracked per patient — ABN workflow initiated when due |
| CMT Region Count Verification | Code selected from template, not verified against documented regions | SOAP note region count verified before every 98940/98941/98942 claim |
| Adjunctive Therapy Modifier Pairs | GY and GP modifiers frequently omitted for Medicare — compliance violations | GY + GP applied correctly to all Medicare physical medicine code claims |
| Medicare vs. Commercial Payer Rules | Uniform coding applied regardless of payer — wrong rules, wrong modifiers | Payer-specific rules applied: AT for Medicare; Modifier 25 for commercial E&M |
| OIG Audit Preparedness | Documentation often insufficient — $47K average audit recoupment risk | Documentation package maintained audit-ready for every patient-visit |
| ABN Workflow Management | ABN obtained inconsistently — practice writes off maintenance care | ABN initiated on time — GA modifier applied — full patient-pay recovery |
| Monthly Billing Cost | $3,500–$6,000+/mo salary + benefits | Performance-based % of collections only |
| Long-Term Contract Required | N/A | No fixed contract — cancel any time |
Who XMB's Chiropractic Medical Billing Is For — And Who It Is Not For
XMB Is Right For Your Practice If You Are:
- A chiropractor, chiropractic group, or multidisciplinary clinic in any U.S. state
- Experiencing a denial rate above 5% or receiving Medicare compliance letters
- Unsure whether your AT modifier usage is applied correctly for every Medicare patient
- Not systematically tracking the 12-visit re-evaluation milestone per Medicare requirements
- Experiencing write-offs from maintenance care patients without ABN documentation
- Billing adjunctive therapy codes to Medicare without the correct GY + GP modifier combination
- A solo chiropractor wanting to eliminate billing overhead and reduce compliance risk
- A multi-provider chiropractic group needing scalable, modifier-compliant billing support
XMB May Not Be the Right Fit If You:
- Operate a 100% cash-pay chiropractic practice that does not bill any insurance
- Need in-person, on-site billing staff embedded at your physical location
- Are looking for a one-time billing audit only — not ongoing billing management
- Are seeking a billing software product rather than a full-service billing company
Chiropractic Medical Billing — Questions Chiropractors Ask XMB
What is the AT modifier and when is it required in chiropractic billing?
The AT (Active Treatment) modifier is required on every Medicare chiropractic manipulative treatment claim (CPT 98940, 98941, 98942) to indicate that the treatment is active and corrective — not maintenance care. Without AT, the claim is automatically denied by the Medicare Administrative Contractor without adjudication. The AT modifier signals that the patient has a subluxation being actively corrected with the expectation of measurable functional improvement. Applying AT when the patient has reached maximum therapeutic benefit — where no further improvement is expected — is a compliance violation that can trigger recoupment and OIG referral. According to CMS's official chiropractic compliance page, 64% of chiropractic overpayment recoveries involve billing maintenance care as active treatment using the AT modifier.
How are CPT codes 98940, 98941, and 98942 selected?
These codes are selected by the number of spinal regions treated during the visit — not by time, complexity, or technique. The five spinal regions recognized for chiropractic billing are cervical, thoracic, lumbar, sacral, and pelvic. CPT 98940 applies when 1–2 regions are treated; CPT 98941 when 3–4 regions are treated; CPT 98942 when all 5 regions are treated. The SOAP note must specifically identify which spinal regions were manipulated to support the billed code — "adjusted spine" does not support 98942. "CMT performed to cervical, thoracic, lumbar, sacral, and pelvic regions" supports 98942. Billing 98942 when fewer than 5 regions are documented is upcoding. XMB verifies region count against the SOAP note before every CMT code selection. See our medical billing services.
What does Medicare cover — and not cover — for chiropractic services?
Medicare Part B covers only one chiropractic service: manual spinal manipulation to correct a subluxation, billed using CPT 98940, 98941, or 98942 with the AT modifier, paying 80% of the approved amount after the $283 Part B deductible (2026). There is no annual visit cap, but every visit must demonstrate medical necessity and measurable improvement. Medicare does NOT cover: chiropractic E&M visits (99202–99215), X-rays ordered by the chiropractor, extraspinal manipulation (98943), massage therapy, acupuncture, physical therapy modalities (97010–97530), or maintenance care. When billing non-covered services to Medicare patients, the GY modifier is required for statutorily excluded services, or the GA modifier for services excluded as medically unnecessary after a signed ABN. Source: CMS.gov.
What is the difference between active care and maintenance care in chiropractic billing?
Active care (Medicare-covered) is treatment directed at correcting a subluxation with a documented expectation of measurable functional improvement — improving range of motion, reducing pain scores, or restoring functional capacity. Documentation must show objective progress at each visit. Maintenance care (NOT Medicare-covered) is treatment that maintains the patient's current condition or prevents deterioration, with no expectation of further improvement. When a patient reaches maximum therapeutic benefit — typically indicated by a plateau in objective progress metrics over 2–4 visits — the AT modifier must be removed, an Advance Beneficiary Notice (ABN) must be signed, and subsequent claims must be billed with the GA modifier (ABN on file) so the practice can collect from the patient directly. See our Revenue Cycle Management page for how XMB manages this workflow.
What are the most common chiropractic billing denial reasons?
The top chiropractic denial causes in 2026 are: (1) missing AT modifier on Medicare CMT claims — automatic denial without adjudication; (2) maintenance care billed as active care using AT modifier — the primary driver of the 33.6% improper payment rate; (3) CMT code billed for more spinal regions than documented in the SOAP note; (4) pain code used as primary diagnosis without the required M99.0x subluxation code for Medicare; (5) adjunctive therapy codes without GY and GP modifiers for Medicare patients; (6) E&M code without Modifier 25 on the same day as CMT for commercial payers; and (7) no functional improvement documentation beyond 12 visits to support continued active care status. XMB's documentation-first workflow prevents all seven before any claim is submitted. Source: CMS.gov · AAPC.
Chiropractic Medicare Billing Demands AT Modifier Compliance — Not Guesswork
Get a free, no-obligation practice assessment. XMB will audit your CMT code selection, AT modifier usage, active vs. maintenance care documentation, ABN workflow, and adjunctive therapy modifier compliance — and show you exactly where your practice is exposed to denials and audit risk, starting within 14 days.
M. Tayyab
CPC, CPMA — Certified Professional Coder & Medical Billing Specialist
M. Tayyab is a certified medical billing and coding expert at Xecta Medical Billing (XMB) with specialized experience in chiropractic revenue cycle management, AT modifier compliance strategy, active vs. maintenance care documentation frameworks, ABN workflow management, and Medicare chiropractic audit defense. He has helped chiropractic practices recover denied revenue by correcting CMT region count errors, implementing systematic 12-visit re-evaluation tracking, and building documentation systems that produce audit-ready SOAP notes. He leads XMB's chiropractic billing practice and oversees clinical content accuracy for all specialty pages.
Expert Reviewed: May 22, 2026 · Last Updated: May 22, 2026