Chiropractic insurance billing in Connecticut.

Medicare’s chiropractic rules are federal — the same in every state. Medicare Part B covers ONLY manual manipulation of the spine to correct a subluxation (CPT 98940–98942), and ONLY when the care is active or corrective — which you signal with the AT modifier. Maintenance care, exams, X-rays, and any therapies performed by a chiropractor are not covered, so a properly executed ABN is essential before non-covered services. The full federal rules are in our chiropractic Medicare billing guide.

Part B claims in Connecticut are processed by National Government Services (JK) — its Local Coverage Determination and documentation expectations (and its audits of the AT modifier and medical necessity) are the ones your Connecticut claims are measured against.

A Connecticut chiropractic or multi-specialty practice spends most of its commercial billing day with: Anthem Blue Cross Blue Shield; ConnectiCare; Cigna; Aetna; UnitedHealthcare; Harvard Pilgrim Health Care. Each has its own claim portal, fee schedule, and chiropractic medical-policy quirks.

Two delegated musculoskeletal/chiropractic network managers dominate for Connecticut commercial plans, and which one applies determines where enrollment, authorizations/treatment plans, and CLAIMS go.

• American Specialty Health (ASH) — a national specialty-network manager that administers chiropractic (often plus acupuncture) benefits for several plans that operate in Connecticut, notably Anthem/Anthem Blue Cross Blue Shield, Cigna, Aetna, and Health Net lines. When a CT plan delegates to ASH, network participation, medical-necessity/treatment-plan review, and claims route to ASH (ashlink.com), NOT the health plan; the State of Connecticut employee/retiree medical plan and many Anthem/Cigna products historically run chiropractic through ASH.
• Optum / Optum Physical Health (UnitedHealth Group) manages outpatient PT/OT/chiro for UnitedHealthcare; since Sept. 1, 2024 UHC requires prior authorization for chiropractic/PT/OT/ST for Medicare Advantage members with reviews delegated to Optum (CMS Ch. 15 / applicable LCDs / InterQual criteria) via the UHC provider portal. CRITICAL for CT chiropractic billing: confirm on the member’s card/portal whether chiropractic is carved out to ASH or Optum — delegation arrangements vary by plan/product and change over time, and sending the auth or claim to the wrong entity is a leading denial cause. ConnectiCare (an EmblemHealth company) is a major CT commercial/Medicare Advantage carrier; verify its current chiropractic prior-auth list and whether it self-administers or delegates before submitting.

What actually trips up chiropractic billing in Connecticut:

• State coverage mandate — Conn. Gen. Stat. 38a-507 (individual policies) and 38a-534 (group policies) require Connecticut-regulated health insurance policies to cover services rendered by a licensed chiropractor TO THE SAME EXTENT as the same service performed by a physician, provided the service treats a condition covered by the policy and is within the chiropractor’s licensed scope. This is a parity mandate, not an unlimited-visit mandate, and it does NOT reach self-funded ERISA plans (which are common among large CT employers) — so always check whether the plan is fully insured (mandate applies) or self-funded (it may not).
• Visit caps and medical necessity — most CT commercial/ASH/Optum plans impose annual visit limits (commonly ~12-20 visits, more with documented improvement) and require a documented treatment plan, periodic re-evaluation, and a transition from active/corrective care to non-covered ‘maintenance’ care. ASH front-loads clinical documentation/medical-necessity and treatment-plan review; Aetna’s chiropractic policy expects documented improvement within the first ~2 weeks or further care is deemed not medically necessary unless the plan of care is modified.
• Modifiers/pre-auth quirks — expect the AT (active treatment) modifier on Medicare/Medicare-Advantage spinal manipulation (98940-98942), correct GA/GY/GZ and -59/X{EPSU} usage when distinct services are billed, and prior authorization for chiro/PT/OT under UHC/Optum Medicare Advantage (effective 9/1/2024; routine maintenance excluded).
• Carve-out routing — because Anthem/Cigna/Aetna chiropractic frequently runs through ASH and UHC through Optum, verify the delegated administrator and its specific filing window and auth rules BEFORE submitting; wrong-entity submission and missed treatment-plan/re-eval requirements are the most common CT chiropractic denials. Not legal advice — verify benefits and current rules per payer.

Largely contract/payer-set, not fixed by Connecticut statute. The common initial-claim filing window for commercial/private payers runs roughly 90-180 days from the date of service (e.g., Cigna commonly ~90-120 days; Aetna ~90-180 days; many CT Anthem/ConnectiCare/UnitedHealthcare commercial plans ~90-180 days), and when chiropractic is carved out to American Specialty Health (ASH) the ASH filing window applies instead.

Always confirm the exact deadline in your participating-provider agreement or the payer’s provider manual, since it can be shorter or longer by plan and product. Connecticut context: the state’s prompt-pay law, Conn. Gen. Stat. 38a-816(15) (part of the Unfair Insurance Practices Act / CUIPA), governs how fast the INSURER must pay you, not your submission deadline — a clean claim with all information must be paid within 20 days (electronic) or 60 days (paper) of the insurer’s receipt of proof of loss, with statutory interest owed if a clean claim is not paid within 45 days.

That is a payment clock, not a filing cutoff; the provider’s submission deadline remains contractual.

Federal limit: generally 12 months (one calendar year) from the date of service to submit an initial Medicare fee-for-service claim. This is set by federal law — Sections 1814(a)(1), 1835(a)(1) and 1842(b)(3)(B) of the Social Security Act and 42 CFR 424.44, as reduced to 12 months by Section 6404 of the Affordable Care Act (effective for services on/after Jan. 1, 2010) — not by Connecticut.

Limited exceptions exist (e.g., administrative error, retroactive Medicare entitlement). Medicare Advantage plans set their own (often similar ~12-month) contractual deadlines — confirm per plan.

Connecticut Medical Assistance Program (HUSKY Health / Medicaid, administered through the interChange MMIS at ctdssmap.com): generally 120 days from the date of service to submit an initial claim. IMPORTANT and recent: this window was PERMANENTLY EXTENDED from 60 days to 120 days for dates of service on or after January 1, 2025 (per DSS provider bulletin guidance).

Special/longer windows apply in certain situations — e.g., behavioral-health services have generally been allowed a one-year timely-filing period, and claims involving other insurance/Medicare crossover, retroactive eligibility, or required resubmissions/adjustments follow separate exception timeframes.

Confirm the current limit and any exception against the live DSS bulletin and the interChange Claim Resolution Guide before relying on it.

Connecticut Workers’ Compensation (Chapter 568) has distinct clocks and does NOT pin a single hard ‘days-from-service’ provider bill-submission cutoff in the practitioner billing regulation.

• Worker’s claim: the injured employee generally must file a claim (Form 30C) within 1 year of a traumatic injury or within 3 years of the first manifestation of an occupational disease (Conn. Gen. Stat. 31-294c).
• Provider bill PAYMENT: under the Practitioner Billing and Payment Guidelines (Conn. Agencies Regs. 31-280-3) the payor must remit payment on a compensable, properly documented bill within 60 days of receipt, with interest (commonly cited at 1.5% per month) on late payment; the regulation also gives the payor 60 days to respond to a practitioner’s payment dispute and the Dispute Resolution Panel 90 days to issue a determination. Practically: submit bills promptly on the CMS-1500/required form to the carrier/TPA and follow the carrier’s instructions; there is no separate fixed statutory provider ‘submit-within-X-days’ deadline, so confirm the carrier’s own timeframe.

Connecticut is an at-fault (tort) state and is NOT a no-fault state (it repealed mandatory no-fault/PIP effective Jan. 1, 1994), so PIP is not required and there is no fixed statutory deadline to submit medical bills to an auto carrier.

The optional first-party coverage is Medical Payments (MedPay), an add-on; any bill-submission/notice timeframe is set by the individual auto policy, not by statute — submit promptly per policy terms (a ~1-year notice/proof-of-loss window is a common policy norm, but verify each policy).

Connecticut’s prompt-handling rule, Conn. Gen. Stat. 38a-816(6), requires the insurer to act on a claim within a reasonable time after proof of loss but does not set a provider submission cutoff. The underlying bodily-injury/third-party claim is governed by Connecticut’s 2-year personal-injury statute of limitations (Conn.

Gen. Stat. 52-584), and UM/UIM claims must allow at least 3 years; on a third-party liability/lien basis, bills are typically presented at settlement. Confirm each MedPay policy’s notice/submission terms.