Chiropractic insurance billing in South Carolina.

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 South Carolina are processed by Palmetto GBA (JM) — its Local Coverage Determination and documentation expectations (and its audits of the AT modifier and medical necessity) are the ones your South Carolina claims are measured against.

A South Carolina chiropractic or multi-specialty practice spends most of its commercial billing day with: BlueCross BlueShield of South Carolina; UnitedHealthcare; Aetna; Cigna; Ambetter (Centene); Molina Healthcare. Each has its own claim portal, fee schedule, and chiropractic medical-policy quirks.

South Carolina chiropractic claims and prior-authorization do NOT all route to one vendor – delegation varies by payer and line of business, so check the member ID card and payer portal each time. The most important recent change:

CIGNA moved South Carolina into its American Specialty Health (ASH) musculoskeletal program effective November 1, 2023 (Phase 2 of Cigna’s ASH expansion, alongside North Carolina), so for affected Cigna PPO/HMO/POS and individual/family plans, contracted-network status, claims, and utilization management for outpatient PT/OT (and ASH’s chiropractic/specialty arrangements) route through ASH rather than directly through Cigna – freestanding PT/OT and chiropractic practices generally must be contracted with ASH to be in-network for those Cigna members (ASH practitioner recruitment: 888.511.2743).

UnitedHealthcare manages chiropractic/PT/OT through Optum (Optum Physical Health, formerly OptumHealth Care Solutions); for UHC Medicare Advantage and many commercial plans, chiropractic treatment plans beyond the initial evaluation/visits require authorization submitted via the UnitedHealthcare Provider Portal/Optum.

ASH is a national delegated chiropractic/acupuncture/PT manager used by various Aetna and Anthem/BCBS plans in other markets, so verify ASH applicability on each specific plan. BlueCross BlueShield of South Carolina / BlueChoice HealthPlan generally administers chiropractic medical policy DIRECTLY (it has not delegated chiropractic to ASH as its standard arrangement), so route those claims/medical-policy questions to BCBS SC.

South Carolina Medicaid managed-care chiropractic is handled by each MCO (Select Health/First Choice, Healthy Blue by BlueChoice, Absolute Total Care, Molina Healthcare of SC, Humana Healthy Horizons), not a single statewide vendor.

Bottom line: route many Cigna PT/OT/chiro to ASH (post-Nov-2023), UHC chiro to Optum, BCBS SC chiro to BlueCross directly, and confirm everything on the ID card.

South Carolina’s chiropractic insurance mandate is a ‘mandated-OFFER,’ not a mandated benefit: under S.C. Code Ann. 38-71-210, an insurer whose medical-expense policy does not already pay for chiropractic must OFFER an optional rider/endorsement (at reasonably related extra cost) covering chiropractor services within the chiropractic scope of practice (S.C. Code Ann. Title 40, Chapter 9) – so chiropractic coverage is not automatically built into every South Carolina plan, and benefit levels vary widely by plan/rider. What actually trips up chiropractic billing here:

• Medical necessity and treatment plans – BlueCross BlueShield of South Carolina (the dominant commercial carrier) covers chiropractic only for an active condition expected to improve and requires a documented treatment plan (history, present-illness detail, musculoskeletal/neuro exam, diagnosis, recommended level of care with duration/frequency, goals and objective measures, and concurrent documentation of therapy effect); it explicitly EXCLUDES maintenance/supportive/preventive care and deems many items investigational/non-covered (acupuncture, low-level laser therapy for all indications, dry hydrotherapy/hydrobed, digital radiographic mensuration, digital postural analysis, and ~30 named techniques such as applied kinesiology, cranial manipulation, Webster, and manipulation under anesthesia). BCBS SC also does NOT recognize incident-to billing – claims must be billed under the provider who actually rendered the service.
• Plan dollar/visit caps – chiropractic riders and the South Carolina State Health Plan can cap chiropractic tightly (the State Health Plan has historically limited chiropractic to an annual dollar amount, e.g., roughly $500/year Standard and $2,000/year Savings Plan – verify current year), so confirm the member’s specific cap before a course of care.
• Cigna/ASH routing – for Cigna members in the ASH program (since 11/1/2023), eligibility, contracting, claims, and clinical review for PT/OT (and ASH chiro arrangements) go through ASH, with ASH medical-necessity review and visit authorization.
• Modifier discipline – for Medicare and payers mirroring it, the AT modifier must be on spinal CMT codes 98940-98942 for active/corrective care (no AT = treated as non-covered maintenance and denied), Original Medicare covers ONLY 98940-98942 (never the exam, x-rays, or therapy), and append modifier 25 to a separately identifiable, separately documented E/M billed the same day as manipulation or expect a bundling denial.
• Medicaid visit cap – South Carolina Healthy Connections covers chiropractic only when medically necessary and limits beneficiaries to a small number of visits per year (commonly cited as about 6/year; confirm current SCDHHS policy and the specific MCO), with maintenance/wellness care excluded. Verify benefits, the managing vendor, the visit/dollar cap, and treatment-plan/auth requirements before treating.

Largely contract/payer-set, but South Carolina’s clean-claim/prompt-pay law puts a practical FLOOR under the initial filing window: under S.C. Code Ann. 38-59-210(8), a health care claim is a ‘clean claim’ (and thus owed prompt payment) only if it is ‘received by the insurer within one hundred twenty business days’ of the date the services were performed – roughly six calendar months.

So South Carolina’s dominant commercial carriers (e.g., BlueCross BlueShield of South Carolina/BlueChoice, Aetna, Cigna, UnitedHealthcare) typically set initial timely-filing windows in the common 90-180 day range, and you can generally count on at least ~120 business days for in-state fully insured business, but the exact number is per the specific payer/plan contract.

Self-funded ERISA plans are NOT bound by South Carolina’s insurance code, so confirm those separately on the member ID card/plan document. South Carolina prompt-pay also requires payment of a clean claim within 20 business days (electronic) or 40 business days (paper), with interest at the legal rate (per Section 34-31-20(A)) on late payment – those govern payment speed, not the provider’s filing deadline (S.C.

Code Ann. 38-59-220 through 38-59-240). Always confirm the exact limit in the specific payer/plan contract.

12 months (one calendar year) from the date of service. This is the federal Medicare limit under 42 CFR 424.44 and Section 1842(b)(3)(B) of the Social Security Act, and it applies in South Carolina the same as nationwide. South Carolina’s A/B Medicare Administrative Contractor is Palmetto GBA (Jurisdiction M, Part A and Part B) – Palmetto GBA is headquartered in Columbia, SC.

Claims filed after one year are denied for untimeliness with no appeal rights on the timeliness denial (narrow exceptions apply, e.g., retroactive Medicare entitlement). Original Medicare covers ONLY manual spinal manipulation by a chiropractor (CPT 98940-98942) and requires the AT modifier for active/corrective care.

South Carolina Healthy Connections (Medicaid) FEE-FOR-SERVICE: generally one year (365 days) from the date of service – SCDHHS requires that the claim be filed AND that all related activity (rejected-claim refiling, void/replacement and adjustment) occur within one year of the date of service (SCDHHS Provider Administrative and Billing Guide).

South Carolina Medicaid MANAGED CARE (the MCOs – Select Health/First Choice, Healthy Blue by BlueChoice, Absolute Total Care, Molina Healthcare of SC, Humana Healthy Horizons) generally also uses a 365-day timely-filing window from the date of service for both original and corrected claims (confirmed in the Molina and Healthy Blue provider manuals), but each plan sets its own contractual deadline, so verify with the specific MCO.

For Medicare/third-party (TPL) crossover claims, file to South Carolina Medicaid promptly after the primary payer’s EOB; confirm the crossover/TPL window in the SCDHHS TPL supplement, as it can differ from the standard one-year rule.

Always verify the exact window with the specific plan.

South Carolina sets the CARRIER’S payment deadline rather than a fixed days-from-service deadline for the PROVIDER to submit. The South Carolina Workers’ Compensation Commission directs that bills be ‘completed and filed with the appropriate payer as soon as possible after the initial visit or treatment and at reasonable and regular intervals throughout the course of treatment’ (use HCFA-1500/CMS-1500 for physician/office charges, UB-04 for facility charges).

Once a payment request is tendered, payment to the medical provider must be made within 30 days (S.C. Code Ann. 42-9-360; S.C. Code Regs. 67-1305); the only routine exception is when the Commission has accepted a properly filed billing-dispute request.

If unpaid after 30 days, the provider issues a ‘second notice for payment,’ and 30 days after that may petition the Commission’s Medical Services Division to resolve the dispute. PRACTICAL RULE: there is no single statutory ‘X days from service’ provider-submission cutoff, so submit bills promptly to the authorized payer to preserve payment rights and to start the carrier’s 30-day clock; confirm any payer-specific submission window.

South Carolina is an at-fault (tort) state and does NOT mandate no-fault Personal Injury Protection (PIP); first-party auto medical coverage is optional Medical Payments (MedPay) added to the policy (South Carolina is an ‘add-on’ state – any PIP/MedPay it sells does not limit third-party suits, and per S.C.

Code Ann. 38-77-144 such first-party medical/economic-loss coverage may not be assigned or subrogated). There is NO fixed statutory days-from-service deadline to submit a MedPay bill – the deadline is set by the auto POLICY, which typically requires prompt notice of the accident and timely ‘proof of loss’ (itemized bills/records), so submit as soon as possible and follow the policy’s notice/proof-of-loss terms.

Practically, bill the patient’s health insurer or MedPay promptly and, where a third-party (bodily-injury) claim is involved, preserve it within South Carolina’s 3-year personal-injury statute of limitations (S.C. Code Ann. 15-3-530); a denied MedPay/insurance benefit is a contract claim with its own limitation period.

There is no single ‘bill submission’ deadline for auto here – it is contractual, so verify each policy.