CPT Code 98941: Chiropractic manipulative treatment

Key Takeaways

CPT code 98941 reports chiropractic manipulative treatment (CMT) of 3-4 spinal regions in a single visit.

Medicare requires the AT modifier on every 98941 claim; omitting it results in automatic denial.

Billing an E/M code on the same day as 98941 requires Modifier 25 to avoid a bundling rejection.

Pabau’s claims management software and digital forms help chiropractic practices document spinal regions accurately and submit clean 98941 claims.

Most chiropractic claim denials tied to manipulative treatment trace back to one problem: the wrong code for the number of spinal regions treated. CPT code 98941 sits in the middle of the CMT family, covering visits where three or four distinct spinal regions receive manipulation. Getting that count right, and documenting it precisely, is the difference between a paid claim and a payer rejection. This guide covers the definition, spinal region rules, the full code family comparison, Medicare AT modifier requirements, ICD-10 pairings, and billing best practices.

Chiropractic billing depends on precise region documentation at every visit. Practices using chiropractic practice management software can automate much of this workflow, but the underlying coding logic still requires clear clinical judgment at the point of care.

CPT code 98941: definition and clinical description

CPT code 98941, as maintained by the American Medical Association (AMA), describes chiropractic manipulative treatment of the spine involving three to four spinal regions. The full descriptor reads: Chiropractic manipulative treatment (CMT); spinal, 3-4 regions.

CMT is a hands-on treatment in which the chiropractor applies controlled force to spinal joints to restore range of motion, reduce nerve sensitivity, and address vertebral subluxation. The code does not change based on the technique used, the visit duration, or the number of individual spinal segments adjusted within each region.

What matters for code selection is the number of spinal regions treated, not the number of individual vertebral levels. Treating C3, C4, and C5 within the cervical region counts as one region, not three.

The five spinal regions defined

Both the AMA CPT guidelines and the Centers for Medicare and Medicaid Services (CMS) recognize five spinal regions for CMT coding purposes. Each must be documented as a distinct treatment area to justify the selected code level.

A visit where the chiropractor treats the cervical, thoracic, and lumbar regions qualifies as 98941. Adding a fourth region, say the sacral, still falls under 98941. A fifth region triggers 98942.

98940 vs 98941 vs 98942 vs 98943: the full CMT code family

The CMT code family runs from 98940 through 98943. Code selection follows the spinal region count directly.

98943 covers extraspinal manipulation of areas such as the extremities or ribs. Medicare does not cover 98943. When billing both spinal and extraspinal CMT on the same date, report the appropriate spinal code and 98943 separately. You may need Modifier 59 to indicate a distinct procedural service.

For a broader look at how CPT procedure codes work across other therapeutic service categories, the underlying region-count logic applies consistently.

Documentation requirements for CPT code 98941

Record failures are the leading cause of post-payment audits in chiropractic billing. For 98941, the record must establish medical necessity, identify the specific spinal regions treated, and include a functional assessment of the patient’s condition.

A complete SOAP note for a 98941 visit should contain the following elements. Using safer clinical notes practices and structured templates reduces the risk of missing any required field.

• Subjective: Patient-reported complaints, symptom location, severity, and duration. Note how symptoms relate to spinal dysfunction.
• Objective: Examination findings for each region treated. Document range of motion, palpatory findings, or orthopedic test results that support treatment of each specific region.
• Assessment: Diagnosis referencing vertebral subluxation or related dysfunction. Paired ICD-10 codes (see section below) must align with the regions treated.
• Plan: Treatment rendered, including each spinal region adjusted. Some payers require the specific segments within each region to be listed; confirm with your MAC or commercial payer before relying on region-only notation.

The region vs. segment debate matters practically. Medicare guidance focuses on regions, but some local Medicare Administrative Contractors (MACs) and commercial payers require segment-level documentation. Check your MAC’s Local Coverage Determination (LCD) to confirm the level of detail required in your area.

Using structured chiropractic intake form templates that pre-map spinal regions makes it easier for chiropractors to capture region-by-region findings consistently at every visit. This also supports consistent care across a treatment course. Similarly, digital intake forms can enforce required fields so no region documentation is missed before submission.

For practices that want to deepen their documentation workflows beyond code-specific notes, reviewing general medical forms best practices provides useful context for structuring compliant clinical records across all visit types.

Segment vs. region: what payers actually require

The AMA CPT descriptor references regions, not segments. However, payer-specific LCDs sometimes require that the chiropractor identify the specific vertebral levels adjusted within each region. When in doubt, document both: note which region was treated and which segments within that region received manipulation. This satisfies both broad and strict payer interpretations and provides audit-ready detail.

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Medicare coverage and the AT modifier for CPT code 98941

Medicare Part B covers CMT only for the treatment of acute or chronic subluxation. According to CMS Article A56273, chiropractors must append the AT modifier to every CMT claim (98940, 98941, and 98942) to indicate active/corrective treatment for subluxation. Submitting CPT code 98941 without the AT modifier results in automatic denial.

The AT modifier signals to Medicare that the service is medically necessary and directed at correcting subluxation, as opposed to maintenance care. Maintenance care is explicitly excluded from Medicare chiropractic coverage.

What the AT modifier requires clinically

Appending AT is not just a billing step. The clinical record must support the modifier by documenting that the patient’s condition is expected to improve with continued treatment. Key clinical indicators include:

• Objective evidence of progress (improved range of motion, reduced pain scores, functional improvement)
• A treatment plan with defined goals and a reasonable expectation of improvement
• Documentation that the patient has not plateaued into a maintenance phase

When a patient moves to maintenance care, the AT modifier must be dropped and the claim should not be submitted to Medicare for that visit. Billing maintenance visits with the AT modifier is a compliance risk flagged in the OIG Work Plan for chiropractic services.

Chiropractors operating in multi-provider or multi-location settings benefit from standardized compliance workflows. Reviewing compliance requirements for musculoskeletal clinics provides a useful reference for building internal audit checklists that translate across manual therapy specialties.

Modifier 25 for same-day evaluation and management

When a chiropractor performs a separate evaluation and management (E/M) service on the same day as 98941, Modifier 25 must be appended to the E/M code. This indicates the E/M was distinct from the CMT and not bundled into the manipulative treatment.

Not all payers automatically reimburse the E/M separately. Confirm payer-specific policies before assuming both will be paid on the same claim. Some commercial payers require additional documentation showing the E/M addressed a separate clinical problem or was much more extensive than a routine pre-manipulation assessment.

Reimbursement rates and the Medicare fee schedule for 98941

Medicare reimbursement for CPT code 98941 varies by geographic locality and is updated annually through the Medicare Physician Fee Schedule (MPFS). There is no single national rate. Instead, the payment amount is calculated using the code’s relative value units (RVUs) multiplied by the conversion factor and the geographic practice cost index (GPCI) for your locality.

To find the current payment rate for your practice location, use the CMS Physician Fee Schedule search tool and filter by CPT code 98941 and your MAC locality. The FastRVU 2026 lookup tool also provides RVU breakdowns and locality-adjusted Medicare rates.

For commercial payers, reimbursement is contract-dependent and typically higher than Medicare rates. Rates from Aetna, Cigna, and Blue Cross Blue Shield plans will vary by contract tier and geography. Always verify current rates in your payer contract or provider portal rather than relying on national averages.

RVU components for 98941

The MPFS payment for any CPT code breaks into three RVU components: work RVU (physician effort), practice expense RVU (overhead), and malpractice RVU (liability). For CMT codes like 98941, the work RVU reflects the clinical skill, time, and judgment involved in manipulating three to four spinal regions. The AAPC Codify platform provides detailed RVU breakdowns alongside the official code descriptors.

ICD-10 codes commonly used with CPT code 98941

Pairing 98941 with a poorly matched or insufficiently specific ICD-10 code is one of the most common triggers for claim denial and audit attention. The diagnosis code must reflect a condition consistent with spinal dysfunction or subluxation across the regions treated.

The following ICD-10-CM codes are commonly used with 98941. Verify each against your patient’s documented condition and the current-year ICD-10-CM tabular list before use.