Medical billing in New York runs on clocks that state law sets, not payer workload. Commercial insurers and HMOs must pay a clean electronic claim within 30 days and a paper claim within 45 days. Medicaid fee-for-service is stricter: eMedNY needs the claim within 90 days of the date of service. And when a commercial payer pays late, the practice earns interest, but only if someone asks for it.
This guide covers the three systems that shape medical billing in New York: the prompt pay law for commercial claims, eMedNY for Medicaid, and the surprise bill rules for out-of-network care. It ends with a denial and A/R workflow that ties all three together.
Quick answer: New York Insurance Law 3224-a requires regulated insurers and HMOs to pay clean claims within 30 days of electronic receipt and 45 days for paper or fax. Late payments earn interest at the greater of 12% a year or the state corporate tax rate. Medicaid fee-for-service claims must reach eMedNY within 90 days of service, while managed care plans set their own deadlines by contract. The state surprise bill law limits patients to in-network cost sharing and sends payment disputes to independent dispute resolution (IDR).
Key takeaways
- Prompt pay: Clean claims are due in 30 days electronic and 45 days paper, and late claims earn interest.
- eMedNY: File fee-for-service Medicaid claims within 90 days. Later claims need a documented delay reason, and nothing files after two years.
- Managed care: Each plan’s contract and provider manual set its deadlines.
- Surprise bills: Notice and consent come before out-of-network care, and the patient is held harmless.
- Interest: Payers owe prompt pay interest, but it is not automatic. Someone has to track dates and demand it.
The Payer Map Behind Medical Billing in New York
New York does not run one claims system. It runs several, and the first mistake many practices make is sending a claim to the wrong one. Four lanes cover most medical billing volume in New York.
What counts as a clean claim? A clean claim gives the payer nothing to ask about: correct identifiers, correct codes and every required attachment. Only clean claims start New York’s payment clocks. So scrub claims before you submit them, not after a rejection.
Where Fee-for-Service Medicaid Claims Go
Claims for Medicaid members outside a managed care plan go to eMedNY, the state’s electronic Medicaid system. First, the practice needs an ETIN, the submitter ID that eMedNY issues. Professional claims go out as 837P files and institutional claims as 837I files, and a few still go on paper. Also, check eligibility on the date of service, because a claim filed against the wrong program rarely recovers.
Where Managed Care Claims Go
Most New York Medicaid members belong to a managed care plan, so their claims go to the plan, not to eMedNY. Each plan runs its own portal, deadlines and appeals. As a result, treating every Medicaid claim as an eMedNY claim sends a large share of claims to the wrong place.
No-Fault, Workers’ Compensation and Commercial Plans
Auto accident care adds another lane. New York no-fault rules require bills within 45 days of service, give the carrier 30 days to pay or deny, and add 2% monthly interest on overdue payments. Workers’ compensation bills are due within 120 days, and the carrier has 45 days to pay or object. Because a missed no-fault window is rarely excused, practices that see accident patients should follow a separate checklist for NY no-fault billing.
| Payer | Submission deadline | Payment deadline | When payment is late |
|---|---|---|---|
| Commercial (state-regulated) | Set by contract | 30 days electronic, 45 days paper | Interest at 12% a year or more |
| Medicaid fee-for-service | 90 days from date of service | State remittance cycle | Claims past two years cannot be paid |
| Medicaid managed care | Set by the plan contract | Set by the plan contract | Plan complaint and appeal process |
| No-fault (auto) | 45 days from date of service | 30 days from receipt | 2% monthly interest |
| Workers’ compensation | 120 days from date of care | 45 days to pay or object | Board rules apply |
How eMedNY Medicaid Filing Works in New York Medical Billing
eMedNY billing rewards discipline: an active ETIN, a clean eligibility check and a claim inside the window. In New York medical billing, the window is where most Medicaid money is lost.
The 90-Day Window and Its Exceptions
NY Medicaid timely filing gives a practice 90 days from the date of service to submit an initial fee-for-service claim. Missing the window does not always mean losing the claim. However, it needs a valid delay reason, proof that the delay was outside the provider’s control, and submission soon after the problem was resolved. Resubmissions of timely claims follow their own 60-day clock from the denial notice.
Every claim must reach eMedNY within two years of the date of service. After that, no workflow can recover the claim. The delay reason also matters, because a claim held up by another payer follows a different path than one delayed by retroactive eligibility. Many practices track every payer on one list of timely filing limits, so the Medicaid deadline never hides behind a busier one.
Put the 90-day deadline on the calendar when the charge is entered, not when a denial arrives. Three weeks in a work queue can burn a quarter of the window.
Managed Care and the Plan Manual
In managed care, the plan’s provider manual, not the state manual, decides how to submit a claim, what documents to attach and how long you have to file. Plans also set their own prior authorization lists. So keep a one-page summary for each plan with its portal, payer ID, filing limit, appeal window and the services that need authorization. Then update it whenever the plan changes its terms.
What the NY Prompt Pay Law Owes Your Practice
In medical billing, New York treats slow payment as a problem of its own. The NY prompt pay law, New York Insurance Law 3224-a, protects clean claims that a payer receives and then sits on. It applies to state-regulated insurers and HMOs, which covers most commercial plans a private practice bills. However, self-funded employer plans fall under federal law instead.
The Deadlines Inside Insurance Law 3224-a
The statute sets two clocks. A clean electronic claim must be paid within 30 days of receipt, and a paper or fax claim within 45 days. If the payer denies the claim or needs more information, it must say so in writing within the same window and give its reasons. A general note that the claim is “under review” does not stop the clock. The full text of the New York prompt pay law is short and worth keeping on hand.
How to Claim Prompt Pay Interest
Interest gives the law its teeth. A payer that misses the deadline owes interest at the greater of 12% a year or the state corporate tax rate, counted from the date payment was due. Payers do not owe interest under two dollars. For example, an $18,000 batch paid 20 days late earns about $118 at 12%. Still, few practices collect it, because nobody tracks it.
- Log the receipt date. The clock starts when the payer receives the claim, and the payer’s portal usually shows that date.
- Send a written demand. On the day a claim passes its deadline, send a letter that names the prompt pay law and shows the interest math.
- Escalate if needed. When the payer still does not pay, file a complaint with the Department of Financial Services (DFS).
Do not close a claim when the payer pays the balance without interest. The interest is a separate amount, so track it until the payer remits it.
Surprise Bill Rules in New York Medical Billing
The NY surprise bill law protects patients from balance bills for out-of-network care at in-network facilities, including emergency care. For providers, most of the work happens before the claim: disclosure, consent and documentation decide what the patient can be billed at all.
What the State Law Asks of Providers
For non-emergency out-of-network care at an in-network facility, the provider needs two documents. The first is a written notice of out-of-network status and expected charges. The second is a signed patient consent before billing more than in-network cost sharing. If either one is missing, the patient is held harmless, and the dispute moves between the provider and the plan. The federal No Surprises Act adds its own rules on top, so review both laws together.
Where NY Independent Dispute Resolution Fits
Payment disputes over covered emergency care and protected surprise bills go to DFS. Either party files on the DFS portal, and a certified IDR entity then decides the case. In most cases, it is final-offer arbitration: the entity picks either the plan’s payment or the provider’s fee, with the 80th percentile of charges as a key benchmark. A well-documented file wins far more often than a thin one.
The rules changed in 2026. Disputes involving Medicaid managed care are excluded for cases filed on or after May 28, 2026. In addition, the Empire Plan and the Student Employee Health Plan became eligible for disputes filed on or after August 26, 2026, with their own benchmarks. Because the rules keep moving, check the DFS independent dispute resolution page for current steps and fees before you file.
Key point: The notice and consent forms are the first exhibits in a dispute. A missing form can weaken an otherwise strong claim.
A Denial and A/R Workflow for Medical Billing in New York
Denials in New York medical billing fall into a few clear types. The fastest teams sort them by category rather than by age, because each type needs a different fix. Here are the most common patterns:
- CARC 29 (time limit expired): Check the date-of-service math and any exception route before you appeal.
- CO-16 (missing information): Rebuild the claim with the full data set, then resubmit.
- CO-97 (bundled service): Check the current edit pair before adding any modifier.
- CO-15 (authorization missing): Fix the authorization trail and log the request date.
- CO-18 (duplicate claim): Trace the original claim before you resubmit anything.
A/R needs the same weekly routine. First, move every commercial claim past its 30- or 45-day deadline into an interest lane, where demand letters cite the prompt pay law. Next, give Medicaid managed care claims their own lane, since each plan runs its own appeals. Once the lanes exist, a slow payer stops looking like a backlog, and the interest becomes collectible revenue. Some practices run this in-house, while others work with medical billing services in NY that already know the state’s payers.
Getting Medical Billing in New York Right
Medical billing in New York rewards preparation. Filing deadlines are public, and state law sets the payment clocks. So the practices that collect the most are the ones that log receipt dates, send surprise bill notices before care, and keep strong files for disputes.
The best medical billing companies NY practices work with keep the interest column moving every month. For broader support, explore Dr Biller RCM’s medical billing and RCM services.
Need help with New York claims?
Dr Biller RCM tracks NY payer deadlines, claims prompt pay interest and manages eMedNY and managed care follow-up.
Medical Billing in New York FAQs
State-regulated insurers and HMOs must pay clean claims within 30 days of electronic receipt and 45 days for paper or fax. Late payments earn interest at the greater of 12% a year or the state corporate tax rate.
Initial claims must reach eMedNY within 90 days of the date of service. Later claims need a documented delay reason outside the provider’s control, and nothing can be filed more than two years after service.
No. Each plan sets its own submission and payment deadlines in its provider contract, along with its own portal and appeal process.
No. The law covers state-regulated insurers and HMOs. Self-funded employer plans follow federal law instead.
It is the DFS process for payment disputes over emergency services and protected surprise bills. A certified IDR entity reviews the file and usually picks either the plan’s payment or the provider’s fee.
No, not when the state protections apply. The patient owes only in-network cost sharing, and the rest becomes a dispute between the provider and the plan.
