Chiropractic insurance billing in Hawaii.

Original Medicare Part B covers medically necessary manual spinal manipulation to correct a subluxation (CPT 98940 to 98942). Use the AT modifier for active or corrective treatment; the modifier alone does not establish medical necessity.

For a usually covered service expected to be denied in a particular case, such as spinal manipulation that has become maintenance care, a valid ABN is required before treatment to transfer potential financial liability to the patient. Exams, X-rays and therapies performed by a chiropractor are statutorily excluded from this benefit; an ABN for those services is voluntary. Medicare Advantage uses separate plan coverage and notice procedures, not the Original Medicare ABN. See CMS guidance on advance notices and our chiropractic Medicare billing guide.

Original Medicare Part B claims in Hawaii are processed by Noridian Healthcare Solutions (JE). Check its applicable Local Coverage Determination and documentation requirements for the date of service.

Carriers listed for Hawaii include HMSA (Blue Cross Blue Shield of Hawaii); Kaiser Permanente; UHA (University Health Alliance); HMAA (Hawaii Medical Assurance Association); AlohaCare; Med-QUEST (Hawaii Medicaid). Check the member’s product, network, claim destination and applicable chiropractic policy.

HMSA chiropractic routing depends on the benefit and product. HMSA currently delegates commercial chiropractic utilization management to Evolent while retaining claims adjudication under that program. American Specialty Health (ASH / ASH Group, ashlink.com) continues to administer specified complementary-care rider benefits.

For HMSA members with a chiropractic or ASH/Complementary Care rider (shown as ‘CHIRO’ or ‘CMPCARE’ on the membership card), ASH governs network enrollment, treatment-plan/medical-necessity review, and the chiropractic benefit; ASH Group customer service handles these inquiries.

(Note a Hawaii nuance: since 1/1/2014, eligible chiropractors and certain CAM providers also enroll directly with HMSA and can submit claims to HMSA under HRS 432E-1.4 medical-necessity coverage, so the exact ASH-vs-HMSA routing depends on the member’s product/rider — verify on the card and HMSA’s CAM provider guidance before submitting.) The other carriers are NOT ASH-delegated in the same way:

UHA Health Insurance uses its own provider network in Hawaii and UnitedHealthcare Choice Plus for mainland access; CAM services remain subject to UHA payment criteria,

HMAA (Hawaii Medical Assurance Association) and Kaiser Permanente Hawaii handle chiropractic/alternative care directly under their own benefit designs (Kaiser is a closed integrated system). Bottom line: confirm the member’s plan and rider, because for HMSA the chiropractic benefit and reviews often run through ASH, while UHA uses its Hawaii network and mainland UnitedHealthcare access, and HMAA/Kaiser follow their own benefit designs.

Verify current arrangements at point of service.

What actually trips up chiropractic billing in Hawaii:

• HMSA + ASH routing and rider gating — For an ASH-managed HMSA rider, verify CHIRO/CMPCARE eligibility and the rider rules. HMSA also uses Evolent for commercial chiropractic utilization management; its Evolent program retains claims adjudication at HMSA. For example, HMSA’s January 2026 Guide to Benefits 449 lists up to 20 chiropractic visits per calendar year, with ASH medical-necessity approval after the initial evaluation; other members’ coverage and routing depend on their product, so eligibility/rider verification BEFORE treatment is the single biggest avoidable denial.
• Medical-necessity standard (HRS 432E-1.4) — HMSA covers CAM/chiropractic only when medically necessary under HRS 432E-1.4 (an otherwise-covered service, recommended by the treating provider, and found medically necessary by the plan’s medical director); maintenance/wellness care is generally not covered, so an active treatment plan with documented functional improvement and periodic re-evaluation is essential to avoid ‘maintenance’ denials.
• Annual dollar/visit caps on other payers — HMAA caps ALL alternative care combined (chiropractic, acupuncture, etc.) at a low annual maximum (commonly around $1,000 per calendar year) with a coinsurance; UHA covers CAM on a medical-necessity basis (no prior auth required for CAM, but subject to its Medical Benefit Guide limits and CAM payment policy). These caps are easy to blow through mid-year, so track the running total per member.
• Modifier/coding traps — for Medicare and Medicare Advantage, append the AT (active treatment) modifier on spinal CMT (98940-98942) and avoid billing maintenance; use correct CMT region coding with a payable spinal diagnosis; UHA may retrospectively review CAM services under its own payment policy.
• No broad commercial chiropractic MANDATE forcing rich benefits — Hawaii does not impose a sweeping statutory commercial chiropractic-benefit mandate; coverage is rider/plan-specific (HRS 432E-1.4 governs HOW medical necessity is decided, not a guaranteed visit count).
• Cross-payer billing for the same patient — because Hawaii is no-fault auto and WC bills are fee-schedule-capped (PIP uses the WC supplemental schedule under HRS 431:10C-308.5, subject to separate PIP rules; WC under HAR Title 12 Ch. 15), accident-related chiropractic frequently bills PIP or WC rather than the health plan — route the claim to the correct payer to avoid recoupments. Not legal advice — verify benefits, caps, and current rules per payer and per member.

Largely contract/payer-set, not fixed by a single Hawaii statute — confirm per payer and per participating-provider agreement. In practice, Hawaii’s dominant commercial carriers use a generous window: HMSA (Blue Cross Blue Shield of Hawaii, by far the largest payer) generally requires claims within one year (365 days) from the date of service / last date services were received, and UHA Health Insurance likewise requires medical claims within one year of the date of service (this 1-year rule applies whether UHA is primary or secondary, with a narrow exception when UHA is secondary to Medicare; providers may not bill the member after the deadline lapses).

Other carriers (HMAA, Kaiser Permanente Hawaii commercial) set their own windows — commonly 90-365 days — so verify. Hawaii prompt-pay/clean-claim context (how fast the PLAN must pay YOU, not your submission deadline): under HRS 431:13-108, an uncontested ‘clean claim’ must be paid within 30 days if submitted on paper and 15 days if submitted electronically; amounts unpaid past those limits accrue interest at 15% per year.

As of 2025-2026; verify the exact filing window in each payer’s provider manual/contract.

Federal limit: generally 12 months (one calendar year) from the date of service to submit an initial Medicare fee-for-service claim. Set by the Social Security Act (1842(b)(3)) and 42 CFR 424.44 / CMS (not by Hawaii), and applied in Hawaii through the Part A/B MAC (Noridian, Jurisdiction E).

Claims received after 12 months are denied as untimely (that untimeliness finding is generally not appealable; only narrow CMS exceptions apply). Medicare Advantage plans set their own deadlines (often similar, up to ~12 months) — confirm per plan.

Hawaii Medicaid (Med-QUEST): the standard timely-filing limit is 12 MONTHS (one year) from the date of service for fee-for-service (FFS) claims — this is the outer filing limit for initial submissions, resubmitted claims and additional-payment requests; adjustments must also meet the 60-day limit after initial adjudication in Chapter 4, section 4.3.8.

For FFS enrollees who also have Medicare or other third-party-liability (TPL) coverage, the claim must be submitted within 12 months from the date of service OR within 6 months from the date on the third-party Explanation of Benefits (EOB), whichever is GREATER.

Claims submitted past the 12-month deadline must be pre-approved via a waiver-of-the-filing-deadline request submitted BEFORE the claim. Most Hawaii Medicaid members are in QUEST Integration managed-care plans (HMSA, Kaiser, UnitedHealthcare Community Plan/’Quest’, Ohana/WellCare, AlohaCare) — those plans publish their own timely-filing windows (commonly aligned to or up to 12 months); confirm with the specific QUEST Integration health plan.

Source: Hawaii Med-QUEST FFS Provider Manual (Chapter 4, Claims) and the October 2018 Med-QUEST Provider Bulletin on timely filing.

Hawaii Workers’ Comp: a medical-services provider must notify or bill the employer, insurer, or the Special Compensation Fund within TWO YEARS of the date services were rendered, in cases where compensability is not contested by the employer.

Failure to bill within that two-year period results in FORFEITURE of the provider’s right to payment. This is set by statute at HRS 386-21(g) (administered by the DLIR Disability Compensation Division). Note related payment timing: where the employer does not contest the claim, payment of properly submitted medical bills is due on the timeframe set by the WC rules/fee schedule (HRS 386-21 and HAR Title 12, Chapter 15, the WC Medical Fee Schedule, which caps charges at 110% of the Medicare RBRVS applicable to Hawaii or the supplemental fee schedule).

Submit promptly with the required reports; if compensability IS contested, the worker’s underlying claim timing/notice rules govern. Confirm current text with the Disability Compensation Division.

Hawaii is a NO-FAULT auto state: the applicable vehicle’s Personal Injury Protection (PIP) coverage (minimum $10,000 per person, HRS 431:10C-103.5 / 431:10C-304) pays medical/rehabilitation bills first regardless of fault, and providers typically bill the PIP carrier directly.

There is NO fixed statutory deadline requiring a provider to submit a PIP medical bill within X days of treatment; instead, the key timers are on the INSURER’s side and on the lawsuit clock. Under HRS 431:10C-304, once the insurer has ‘reasonable proof’ of the fact and amount of benefits (i.e., a submitted bill and demand), it must pay or deny (or request itemized additional documentation) within 30 days; unpaid amounts then bear interest at 1.5% per month.

HRS 431:10C-315 uses the later of its listed two-year triggers for motor-vehicle benefit suits and tort actions, including the accident and applicable benefit payments; track the trigger for the specific claim. Practical norm: bill PIP promptly and in full so the 30-day insurer clock and interest run in your favor, and watch policy proof-of-loss terms.

PIP medical charges are also subject to the WC fee-schedule cap (HRS 431:10C-308.5: generally 110% of the Hawaii WC/Medicare-based fee schedule). Confirm each carrier’s documentation requirements.