North Carolina Medical Billing and Payer Rules

Timely Filing in North Carolina

North Carolina Law and the Federal No Surprises Act

CMS recorded in 2021 that North Carolina identified no state law governing the out-of-network rate, so the federal process decides these disputes. State law does require insurers to cover emergency care at in-network cost-sharing (G.S. 58-3-190).

Major Payers

How Does NC Medicaid Work for Billing?

North Carolina's Medicaid program is called NC Medicaid, and the Division of Health Benefits (DHB) inside the North Carolina Department of Health and Human Services runs it. The fee-for-service side, which NC Medicaid calls NC Medicaid Direct, is processed in NCTracks, the state's claims processing and provider enrollment system. The NC Medicaid Claims and Billing page says the program requires providers to file claims electronically, with some exceptions, through NCTracks.

Fee-for-service is only part of the picture. Most members are enrolled in NC Medicaid Managed Care, which means a claim goes to the member's health plan, not to NCTracks. The first question on any North Carolina Medicaid claim is which plan the member had on the date of service.

Standard Plans

The NC Medicaid health plans page lists four Standard Plans, each a prepaid health plan. AmeriHealth Caritas North Carolina, Healthy Blue of North Carolina and UnitedHealthcare of North Carolina are listed as statewide. Carolina Complete Health is listed for Regions 3, 4 and 5 only. Contract documents on that page still carry a WellCare NC attachment, so read the plan from the eligibility response, not an old payer list.

Behavioral Health I/DD Tailored Plans

Behavioral Health I/DD Tailored Plans cover behavioral health and intellectual or developmental disability services. NC Medicaid lists four operators: Alliance, Partners, Trillium and Vaya. See behavioral health billing for coding and authorization.

Other Programs on the Plan List

The same page lists the Children and Families Specialty Plan, shown as Healthy Blue Care Together, and the Eastern Band of Cherokee Indians Tribal Option, which NC Medicaid describes as a primary care case management entity created by the Cherokee Indian Hospital Authority.

Expansion Changed the Volume

NC Medicaid expanded on December 1, 2023 to cover people ages 19 through 64 up to 138% of the federal poverty line.

Revalidation Every Five Years

NC Medicaid says the Affordable Care Act requires recredentialing (revalidation) every five years. The due date arrives in the NCTracks provider message inbox, with reminders at 50, 20 and 5 days. Missing it means suspension, then termination after 50 days. The fee is $100.

What Is the NC Medicaid Timely Filing Limit?

NC Medicaid fee-for-service claims, except inpatient and nursing facility claims, must be received by NCTracks within 365 days of the first date of service. The NC Medicaid Claims and Billing page states that hospital inpatient and nursing facility claims must be received within 365 days of the last date of service on the claim. The clock runs until NCTracks has the claim, not until you send it.

What About the Managed Care Plans?

The 365 days belongs to NC Medicaid Direct. The Health Plan Billing Guide sets no single filing window for all plans, and this page cites no statewide number from an official NC Medicaid page. We load each plan's window into the account at onboarding.

The Billing Guide (version 37, October 12, 2026) sets how fast a plan must react. A plan must tell the provider within 18 calendar days whether a medical claim is clean or pended. A pended claim must be paid or denied within 30 calendar days after the missing information arrives, with interest if held longer, and the plan may deny it if nothing arrives within 90 calendar days.

What Does the Clean Claim Date Mean?

Section 3.41 of the Billing Guide fixes the clean claim date. For a complete claim it is the date received. For an incomplete claim it is the date the missing information is received, so a pend that you answer slowly moves your own payment date.

How Do You Ask for a Time Limit Override or Reconsideration?

NC Medicaid's reconsideration page cites 10A NCAC 22J .0102: a provider may request a reconsideration review within 30 calendar days of receiving final notice of payment, payment denial, disallowance or payment adjustment. The request must be in writing and signed, and goes to the Appeals unit of the Division of Health Benefits. After a final adjudication, the provider has 30 days from receipt of the notice to request a hearing with the DHHS Hearing Office.

That page says adjustment requests, medical necessity claim reviews, resubmissions per the EOB and basic time limit override requests go through NCTracks, not the Appeals unit. Since February 5, 2017 no Medicaid Resolution Inquiry Form is needed for an override when the claim is submitted through the NCTracks Provider Portal or by batch X12 transaction.

Who Is the Medicare Contractor in North Carolina?

Palmetto GBA is the Medicare Administrative Contractor (MAC) for Medicare Part A and Part B in North Carolina, in Jurisdiction M (JM). The CMS list of MACs by state places North Carolina, South Carolina, Virginia and West Virginia in JM.

The same CMS list says the JM contractor also processes home health and hospice claims for North Carolina. Portal and claim status steps are not on this page, so use the Palmetto GBA website.

Medicare timely filing is one calendar year after the date of service. That rule is in 42 CFR 424.44(a)(1), which says the claim must be filed no later than the close of the period ending 1 calendar year after the date of service.

What Is North Carolina's Prompt Payment Law?

G.S. 58-3-225 requires an insurer to pay, deny or send a defect notice within 30 calendar days after receiving a claim, and late payments bear interest at 18% a year. The statute text, which the North Carolina Department of Insurance posts, applies to insurers, service corporations, HMOs and multiple employer welfare arrangements that write a health benefit plan.

Where the Statute Stops

Subsection (a) excludes from the definition of a health benefit plan any plan implemented or administered by the North Carolina or United States Department of Health and Human Services. Self-funded employer plans fall under ERISA, and the Department of Insurance says it has no regulatory authority over them.

Under subsection (k), an insurer owes no interest where the delay is caused in material part by the claim submitter or by matters beyond its reasonable control. Interest only helps you if the claim was clean.

Medicaid is separate. The NC Medicaid Billing Guide tells health plans to process claims in line with G.S. 58-3-225 and cites subsections (g), (i) and (j).

Does North Carolina Have Its Own Surprise Billing Law?

This page cites no North Carolina statute that sets the out-of-network payment amount, and CMS's own record says the state identified none. In its December 27, 2021 letter to Governor Cooper and Commissioner Causey, CMS stated that North Carolina has no applicable All-Payer Model Agreement and did not identify any state laws as governing the out-of-network rate. The federal independent dispute resolution process under 45 CFR 149.510 and 149.520 therefore applies in North Carolina.

The letter says the federal process covers insured group and individual coverage when a nonparticipating provider, emergency facility or air ambulance provider is involved. It also records that the Department of Insurance said it lacks authority to enforce several No Surprises Act provisions, and that CMS would enter into a collaborative enforcement agreement with the state.

What This Means for Each Plan Type

• Fully insured plans: the federal open negotiation and IDR process decides the out-of-network rate.
• Self-funded ERISA plans: the federal No Surprises Act applies as it does everywhere, and the Department of Insurance has no authority over the plan.
• Uninsured and self-pay patients: North Carolina indicated no state provider-patient dispute process, so the federal one applies.
• Medicaid and Medicare patients: the Act covers private coverage, so these claims follow program rules.

What the Emergency Coverage Statute Says

G.S. 58-3-190 is a coverage rule, not a payment formula. An insurer must cover emergency services without prior authorization when a prudent layperson would have believed an emergency existed, including care from a provider with no contract if a delay would worsen the emergency. Cost-sharing stays at in-network levels. Check the current statute for later amendments.

Limits on What We Can Say

The CMS letter is from December 2021, and this page cites no newer CMS state-by-state publication. This page says nothing about the status of the 2025 ambulance reimbursement bills, so check the Department of Insurance. Our state surprise billing laws page compares states.

How Do You Dispute an Out-of-Network Underpayment in North Carolina?

Start federal open negotiation within 30 business days of the initial payment or denial, and start IDR within 4 business days after negotiation ends. Under 45 CFR 149.510, the 30-business-day open negotiation period begins on the day the provider receives the initial payment or notice of denial, and IDR initiation must come in the 4-business-day period beginning on the first business day after the last day of open negotiation.

How Do You File a Complaint with the Department of Insurance?

The Department of Insurance asks providers to try the insurer's Provider Relations team first, to finish every contractual appeal level, and then to call its Consumer Services Division at 855-408-1212 before sending a written complaint. Its provider complaint page says it can discuss repeated problems and take regulatory action, but it cannot resolve contract disputes or decide what a claim is worth.

For a suspected No Surprises Act violation, CMS directs providers to the No Surprises Help Desk at 1-800-985-3059.

Which Payers Matter Most in North Carolina?

Blue Cross and Blue Shield of North Carolina, the NC Medicaid health plans and Medicare under Palmetto GBA are the payers we can show operate in the state from official lists. The Department lists six 2026 individual major medical insurers: Ambetter of North Carolina, AmeriHealth Caritas North Carolina, Blue Cross and Blue Shield of North Carolina, Cigna, Oscar Health and United Healthcare. That page gives no market share, and we give none.

Our Blue Cross Blue Shield guide covers the largest commercial name, and our Medicare and Medicaid guides cover the program rules.

How We Handle Billing in North Carolina

For North Carolina clients we separate NC Medicaid Direct claims in NCTracks from Standard Plan and Tailored Plan claims and track the Billing Guide's 18-day and 30-day rules. Commercial claims run against the 30-day clock in G.S. 58-3-225, with interest requested on late clean claims. Our out-of-network billing and IDR and hospital and facility billing services cover the disputes and facility claims.

Neighboring states are covered in Virginia, South Carolina and Georgia. To review your North Carolina payer mix, book a call.