Chiropractic insurance billing in Oregon.

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 Oregon are processed by Noridian Healthcare Solutions (JF) — its Local Coverage Determination and documentation expectations (and its audits of the AT modifier and medical necessity) are the ones your Oregon claims are measured against.

A Oregon chiropractic or multi-specialty practice spends most of its commercial billing day with: Kaiser Permanente (Kaiser Foundation Health Plan of the Northwest); Providence Health Plan; Regence BlueCross BlueShield of Oregon; Moda Health;

PacificSource Health Plans. Each has its own claim portal, fee schedule, and chiropractic medical-policy quirks.

Chiropractic and physical-medicine benefits in Oregon are increasingly ‘carved out’ to specialty managers or third-party prior-auth vendors, which changes where claims, authorizations, and credentialing go — and this is shifting in 2025-2026.

• PROVIDENCE HEALTH PLAN delegated chiropractic, acupuncture, naturopathic alternative-care, and therapeutic-massage benefits to AMERICAN SPECIALTY HEALTH (ASH / ASHLink) for utilization management AND claims payment: effective 9/1/2025 for Oregon Commercial Large, Small, and Individual groups, and effective 1/1/26 for Oregon (and Washington) MEDICARE. After the effective date, claims are processed and PAID BY ASH (claims sent to Providence are forwarded to ASH), and the in-network provider is responsible for obtaining ASH authorization — so route claims/auths to ASH, not Providence, going forward (ASH 1-888-511-2743).
• REGENCE BLUECROSS BLUESHIELD OF OREGON runs its own Physical Medicine program but delegates the PRIOR-AUTHORIZATION/utilization review for physical medicine (chiropractic/manipulation, PT/OT/ST, acupuncture, massage) to eviCore by Evernorth (Cambia/Regence is an eviCore client); claims still go to Regence, but medical-necessity authorization runs through eviCore (submitted via Availity Essentials).
• UNITEDHEALTHCARE / Optum — UHC commercial and Medicare Advantage manage chiropractic/musculoskeletal care through Optum’s physical-health program using InterQual criteria (UHC’s MA outpatient-therapy-and-chiropractic prior-auth program applies in Oregon as nationally). ASH is the dominant NATIONAL delegated chiropractic-PT manager (also contracted with Aetna, Anthem, Cigna, Health Net in various markets), so always verify on the member’s ID card / eligibility response whether chiropractic is delegated to ASH, gated by eviCore, or managed by Optum BEFORE submitting — misrouting is a leading Oregon denial cause.

What actually trips up chiropractic billing in Oregon:

• Delegation/routing changes — the biggest current pitfall is the Providence-to-ASH transition (OR commercial 9/1/2025; OR Medicare 1/1/26): claims and authorizations for Providence members must now go to ASH, and in-network providers must obtain ASH authorization; sending them to Providence delays payment and risks blown timely-filing windows.
• eviCore gating on Regence — Regence Oregon’s Physical Medicine program requires prior authorization/medical-necessity review through eviCore for chiropractic and therapy; thin documentation and missing treatment plans are the top eviCore denial cause, and Regence has drawn provider complaints for tight visit approvals.
• Visit caps — Oregon commercial plans commonly cap chiropractic/spinal-manipulation visits: Moda Health typically allows up to 12 combined spinal-manipulation + acupuncture visits per plan year (some PEBB plans 20 spinal manipulations), and PacificSource commonly allows ~20 chiropractic visits per benefit period; verify the specific plan/rider.
• Treatment-plan / re-eval documentation — ASH, eviCore, and Optum all expect a documented treatment plan, measurable functional goals, and periodic re-evaluation distinguishing active/corrective care from non-covered ‘maintenance’ care; this is the leading medical-necessity denial driver.
• Medicare modifier discipline — Medicare (Noridian JF) covers ONLY spinal CMT 98940-98942 and REQUIRES the AT (active treatment) modifier; CMT billed without AT is auto-denied as maintenance, and Medicare denies chiropractor-billed exams, x-rays, and therapy as non-covered (bill these to the patient/secondary). Use modifier 25 for a separately identifiable E/M and 59/X{EPSU} for distinct therapy.
• Oregon Health Plan (Medicaid/CCO) actually COVERS chiropractic relatively broadly for neuromusculoskeletal/back-pain conditions on the Prioritized List (expanded effective 7/1/2016) — up to roughly 30 visits/year across spinal manipulation, OMT, acupuncture, PT/OT, and CBT for back conditions — but it must be medically necessary, tied to a covered diagnosis, and properly documented; route and authorize through the member’s specific CCO.
• No sweeping Oregon commercial chiropractic MANDATE forcing a set benefit — coverage, caps, and carve-outs are plan-specific, so verify benefits and the delegated network/vendor for every patient. Not legal advice — verify current rules per payer.

Commercial/private-payer initial-claim filing windows in Oregon are NOT fixed by a single state statute; they are set by your participation contract with each payer, so they vary. The common range is roughly 90-180 days from the date of service, with many PPO/indemnity contracts allowing up to 365 days — confirm the exact number in your participating-provider agreement or the payer’s provider manual.

Oregon’s PROMPT-PAY / clean-claim law governs the PAYER side (how fast the plan must pay YOU, not your submission deadline): under ORS 743B.450 an insurer must pay a clean claim or deny it within 30 days of receipt (or within 30 days of receiving requested additional information), and an insurer that misses these timelines owes simple interest at 12% per annum on the overdue amount, accruing from the 31st day (ORS 743B.452).

The Director defines ‘clean claim’ by rule, referencing the federal Medicare definition. As of 2025-2026; verify each payer/network contract, since some Oregon payers default to tighter windows (e.g., 90-120 days).

12 months (one calendar year) from the date of service to submit an initial Medicare fee-for-service claim. This is a federal rule (Social Security Act 1842(b)(3); 42 CFR 424.44) and applies uniformly in Oregon through the Part B MAC, Noridian Healthcare Solutions (Jurisdiction JF).

State it plainly: a claim must reach Medicare within one year of the DOS or it is denied as untimely (limited exceptions only). Medicare Advantage plans set their own filing deadlines (often similar, up to ~12 months) — confirm per plan.

Oregon Health Plan (Medicaid) fee-for-service: 12 MONTHS from the date of service for an INITIAL claim, per OAR 410-120-1300(1). A claim submitted within 12 months but DENIED may be RESUBMITTED within 18 months of the date of service.

Limited exceptions (e.g., departmental error, retroactive eligibility, court order) can extend the window by up to six additional months under OAR 410-120-1300(3). For Medicare/Medicaid dual-eligible claims, the claim must be filed with Medicare within 12 months of the DOS to satisfy the Division’s timely-filing rule; if a Medicare claim does not electronically cross over, the hard-copy claim must reach the Division within 6 months of the date on the Medicare EOMB/remittance.

NOTE: most OHP members are enrolled in a Coordinated Care Organization (CCO) — CCOs and OHP managed-care plans (e.g., CareOregon, PacificSource Community Solutions, Trillium, Moda/OHP) set their own timely-filing windows under their contracts and OAR 410-141 rules, so confirm the specific CCO’s deadline (commonly 4 months to 12 months) rather than assuming the 12-month FFS rule.

Oregon Workers’ Comp: a medical provider must submit its bill within 60 DAYS, measured from the EARLIEST of (a) the date of service, (b) the date the provider received notice/knowledge of the responsible WC insurer or processing agent, or (c) the date any litigation affecting compensability of the service became final — per OAR 436-009-0010(2)(a).

Critically, there is a longer outer limit: when a provider submits a bill within 12 MONTHS of the date of service, the insurer may NOT reduce payment for late billing (OAR 436-009-0010); bills submitted MORE than 12 months after service are generally not payable (limited exceptions).

A provider billing past the 60-day window must establish good cause, and late billing can subject the provider to civil penalties under ORS 656.254 / OAR 436-010-0340. Practical takeaway: bill within 60 days to be safe; treat 12 months as the absolute outer wall.

Oregon mandates Personal Injury Protection (PIP) on auto policies. PIP covers reasonable and necessary medical expenses INCURRED within 2 years after the date of the injury, up to a statutory minimum of $15,000 in the aggregate (ORS 742.520, ORS 742.524).

There is NO fixed statutory deadline for a PROVIDER to submit a bill; instead, the statute creates a strong incentive to bill promptly: a medical charge is PRESUMED reasonable and necessary unless the PIP insurer issues a notice of denial within 60 calendar days after the insurer receives the provider’s notice of the claim (ORS 742.524(1)(b);

ORS 742.528). (That 60-day clock can be suspended if the provider fails to answer the insurer’s written questions within 10 business days during the first 50 days.) So while there is no provider ‘filing deadline’ per se, the 2-year incurred-expense window and the $15,000 cap are the practical limits, and the underlying third-party (at-fault/liability) bodily-injury claim is bound by Oregon’s general 2-year personal-injury statute of limitations (ORS 12.110).

Bottom line: bill PIP promptly (it is primary and pays regardless of fault); there is no single MVA submission deadline — it is statute- and policy-driven. Confirm each policy’s proof-of-loss/notice terms.