CPT code 98942: Chiropractic manipulative treatment, 5 regions

CPT code 98942 is the billable code for chiropractic manipulative treatment (CMT) delivered across all five spinal regions. The American Medical Association (AMA) descriptor reads: Chiropractic manipulative treatment (CMT); spinal, 5 regions. It applies when a licensed chiropractor treats the cervical, thoracic, lumbar, sacral, and pelvic regions in a single visit.

That makes 98942 the highest-complexity spinal CMT code in the 98940-98942 series. Medicare pays it only when every region is documented individually and the AT modifier is on the claim. Under the 2026 Medicare Physician Fee Schedule, the national average runs roughly $45 to $65 per encounter.

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Key takeaways

CPT code 98942 describes chiropractic manipulative treatment (CMT) covering all five spinal regions: cervical, thoracic, lumbar, sacral, and pelvic.

All five regions must be documented individually in the clinical record to justify 98942 over lower-level codes 98940 or 98941.

Medicare requires the AT modifier on every 98942 claim to show active or acute treatment. Maintenance therapy claims sent without it are denied automatically.

The 2026 Medicare national average sits near $45 to $65 per encounter, roughly 20% to 30% above 98941.

Pabau’s chiropractic practice management software validates CPT codes, flags missing modifiers, and routes claims through the Claim.MD clearinghouse.

The five spinal regions 98942 covers

The five-region requirement is what separates 98942 from every other spinal CMT code. Each region must be independently treated and individually documented.

Payers treat “cervical and thoracic” as two regions, not one. Every region named above requires a separate notation in the encounter note. Documenting “full spine manipulation” without naming each of the five regions is a common reason 98942 gets downcoded to 98940 on audit.

Who can bill CPT code 98942?

Billing eligibility for 98942 is narrow, and it changes with the provider’s license type.

• Licensed chiropractors (DCs) are the primary eligible providers. 98942 is a chiropractic-specific code under Medicare and most commercial payers.
• Osteopathic physicians (DOs) performing spinal manipulation may use 98942 under some commercial contracts. Medicare requires them to use osteopathic manipulation codes (98925-98929) instead.
• Physical therapists and other allied health providers do not bill 98942. Spinal mobilization by PTs uses different therapeutic procedure codes.
• Medical necessity must be established at every visit. A provider cannot bill 98942 simply because a patient presents for a routine wellness adjustment. The clinical record must document the condition justifying treatment.

Confirm payer-specific credentialing requirements with your Medicare Administrative Contractor (MAC) before billing. Commercial contracts vary more than Medicare does on which license types they recognize for spinal CMT.

98940 vs 98941 vs 98942 vs 98943: how the codes differ

Selecting the wrong CMT code is the single most common chiropractic billing error. The table below shows how each code differs, so coders can match documentation to the correct level. The AAPC CPT code lookup provides full descriptors and bundling edits for each.

98943 can be billed on the same date as 98942 when extraspinal manipulation is separately documented. You cannot bill 98940, 98941, and 98942 together on the same encounter. Bill only the one code that reflects the highest number of regions treated and documented.

Documentation requirements for CPT code 98942

Underdocumentation causes more 98942 denials than any other error. Each of the elements below must appear in the encounter note before you submit the claim.

• Diagnosis with subluxation notation. Identify the specific vertebral subluxation or dysfunction at each region treated. A generic statement such as “spinal dysfunction” will not satisfy Medicare or most commercial payers.
• All five regions named explicitly. List each treated region by name in the assessment or treatment section of the SOAP note. Do not rely on a checkmark template without written clinical justification for each region.
• Medical necessity narrative. Explain why treatment of all five regions was clinically necessary at this visit. Pain drawing, functional limitation, and prior treatment response all support this narrative.
• Treatment response and plan. Document the patient’s response to manipulation and the planned frequency and duration of future visits.
• Provider signature and credentials. The treating DC must sign the note. Unsigned or undated notes are grounds for denial on audit.

Keep the superbill aligned with the encounter note. A discrepancy between the code on the superbill and the clinical record is a common trigger for post-payment audits. The ladder below sets out what each code in the series obliges the note to prove.

Medicare coverage rules for spinal CMT

Medicare Part B covers CPT code 98942 exclusively for the correction of spinal subluxation. CMS article A56273 is the authoritative source for chiropractic coverage criteria. Every billing team handling Medicare chiropractic claims should have it bookmarked.

• Covered indication: Subluxation of the spine demonstrating neuromusculoskeletal dysfunction.
• Not covered: Maintenance therapy, wellness adjustments, or treatment aimed solely at preventing deterioration rather than improving a condition.
• Documentation standard: The record must show that the patient’s condition is expected to improve, or that treatment prevents deterioration of an acute condition.
• Visit frequency: CMS sets no hard annual visit limit, but MACs may apply frequency edits. Claims for high-volume weekly visits over extended periods attract medical review.

The AT modifier, and why Medicare denies claims without it

The AT modifier is not optional under Medicare. Omitting it on a 98942 claim submitted to Medicare results in automatic denial. No appeal argument will succeed if the AT modifier was simply forgotten.

Commercial payers generally do not require the AT modifier. Apply it only to Medicare claims. Using AT on commercial claims may trigger manual review from payers whose systems do not recognize the modifier.

Reimbursement rates for CPT code 98942 in 2026

Reimbursement for 98942 varies by geographic locality under the Medicare Physician Fee Schedule (MPFS). The 2026 national non-facility average runs approximately $45 to $65 per encounter. High-cost localities such as Manhattan and San Francisco sit at the upper end of that range. Verify the exact rate for your locality using the CMS Physician Fee Schedule lookup tool.

Under Medicare, 98942 pays roughly 20% to 30% more than 98941, whose 2026 national average sits near $38. That premium reflects the added clinical work of treating all five regions. Upcoding from 98941 to 98942 without adequate documentation is an audit risk, because the note has to substantiate the code rather than follow it.

ICD-10-CM codes that support a 98942 claim

Every 98942 claim requires at least one ICD-10-CM diagnosis code supporting the medical necessity of treating all five spinal regions. Subluxation codes from the M99 category are the primary pairing. Spine pain codes from M54 support the narrative, but on Medicare claims they accompany a subluxation code rather than replace it.

Bill multiple M99 codes when multiple regions have documented subluxation. Listing a single M99 code on a 98942 claim invites downcoding, because the diagnosis then supports one region rather than five.

Common billing errors that get 98942 denied

Five denial patterns account for the majority of rejected 98942 claims. Reviewing the full list of medical billing denial codes shows how payers communicate the specific reason behind each rejection.

How chiropractic billing software prevents 98942 denials

Manual billing workflows create friction at the three moments that decide a 98942 claim: modifier selection, diagnosis code pairing, and submission timing. A purpose-built chiropractic billing platform handles each of them systematically.

Pabau is practice management software for chiropractic practices. Its medical claims management validates CPT selection against the documented diagnosis codes at the point of encounter. If a clinician selects 98942 and the note carries only one M99 subluxation code, the system flags the mismatch before the claim is queued. The AT modifier check then runs on every Medicare claim in the batch, so nothing slips through on high-volume days.

Claims are routed through Claim.MD, Pabau’s clearinghouse partner, which scrubs each 98942 claim against payer-specific edits before transmission. The clearinghouse returns eligibility checks and Electronic Remittance Advices (ERAs), so your billing team sees denial reason codes the same day the payer responds. That shortens the correction and resubmission cycle on the denial types this article covers. It is also the first step toward a clean claim rate you can hold.

• Automated modifier validation: AT is enforced on Medicare payer claims, which removes the manual step behind the most 98942 denials.
• Diagnosis-to-code pairing checks: 98942 claims carrying fewer than five M99 codes are flagged, prompting the biller to verify the documentation first.
• ERA integration: denial reason codes surface inside the platform, so reworking a rejected 98942 claim needs no separate payer portal.
• SOAP note templates: structured chiropractic encounter templates prompt the clinician to document each spinal region individually.

The outcome is fewer write-offs from preventable denials, and less staff time spent on manual claim rework. That rework is where chiropractic practices quietly lose revenue they had already earned.

Stop losing chiropractic claims to preventable denials

Pabau validates every CPT selection against the documented diagnosis codes and enforces the AT modifier on Medicare claims before they leave the practice. See how it works for chiropractic billing teams.

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Conclusion

98942 pays more than its sibling codes, and it asks for more in return. Five documented regions, a subluxation diagnosis for each, a medical necessity narrative, and the AT modifier on every Medicare claim.

Treat the encounter note as the thing that decides the code, and the code selection stops being a judgment call. Practices that bill 98942 well usually have a SOAP template that makes naming all five regions unavoidable. The alternative is auditing claims after the payer has already responded.

Fixing one denied claim costs more staff time than documenting it correctly at the visit would have. Book a demo to see how Pabau catches a missing AT modifier or a thin diagnosis pairing before your 98942 claim reaches the payer.

Continue your research

Need the code for a three or four region adjustment? CPT code 98941 covers the level directly below 98942, with its own documentation and modifier rules.

Want to understand how clearinghouses process CMT claims? Medical claims clearinghouse guide explains the scrubbing, eligibility, and ERA workflow from submission to payment posting.

Billing Medicare for the first time? Medicare billing for practices walks the claim from the appointment through to the payment posting.

Looking for a full chiropractic billing software review? Best medical billing software in the US compares the leading platforms by clearinghouse integration, modifier validation, and denial management.

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