Chiropractic insurance billing in Oregon.

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 Oregon are processed by Noridian Healthcare Solutions (JF). Check its applicable Local Coverage Determination and documentation requirements for the date of service.

Carriers listed for Oregon include Kaiser Permanente (Kaiser Foundation Health Plan of the Northwest); Providence Health Plan; Regence BlueCross BlueShield of Oregon; Moda Health; PacificSource Health Plans. Check the member’s product, network, claim destination and applicable chiropractic policy.

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 fully insured Commercial Large, Small, and Individual groups (self-funded groups are outside that initial program), 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 publishes its own chiropractic coding and reimbursement rules. Its June 2026 Provider News announces revisions to Administrative Policy #138 effective October 1, 2026 to align reimbursable services with state scope. Check the current member product and CPT-specific preauthorization list for the review channel, and confirm the claims destination separately.
• UNITEDHEALTHCARE / Optum — UHC commercial and Medicare Advantage manage chiropractic/musculoskeletal care through Optum’s physical-health program using InterQual criteria (use the current CPT-specific authorization list, including the October 1, 2026 spinal CMT reductions and plan exceptions). 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 can delay processing.

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 the affected Providence products go to ASH; the September 2025 commercial transition covers fully insured plans, with self-funded employer groups outside that initial program, and in-network providers must obtain ASH authorization; sending them to Providence delays payment and risks blown timely-filing windows.
• Regence coding and review — check the current CPT-specific preauthorization list and October 2026 chiropractic reimbursement policy before billing therapy. Keep clinical-review and claims instructions separate; document the treatment plan and objective progress.
• 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 supports medical-necessity review.
• Medicare modifier discipline — Original 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 Original Medicare denies chiropractor-billed exams, x-rays, and therapy as non-covered. Modifiers do not make these DC services covered by Original Medicare. For covered chiropractor-billed E/M or therapy services, use modifier 25 for a significant, separately identifiable E/M and 59/X{EPSU} for distinct therapy under the payer’s rules.
• Oregon Health Plan (Medicaid/CCO) actually COVERS chiropractic relatively broadly for neuromusculoskeletal/back-pain conditions on the Prioritized List (expanded effective 7/1/2016) — under Guideline Note 56, low-risk patients may receive up to four total CMT/OMT, acupuncture and PT/OT visits; medium/high-risk patients and qualifying opioid-taper patients may receive 30 combined rehabilitation, CMT/OMT and acupuncture visits per year when medically appropriate and supported by measurable progress. CBT is addressed separately — 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, from the date of service, or within 60 days after notice/knowledge of the responsible WC insurer or processing agent, or within 60 days after litigation affecting compensability becomes final when the insurer gives written notice — 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; track the 12-month limit and the rule’s responsible-insurer-notice/final-litigation exception for later bills.

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.