MassHealth Timely Filing and Appeals for Therapists and Psychiatrists

MassHealth timely filing and appeals work differently depending on who denied your claim: MassHealth itself (fee-for-service) or one of the managed care plans it contracts with. The clock, the form and the mailbox change with each one. This guide covers the dispute side, plan by plan, and leaves the basic filing rules to our Massachusetts timely filing guide for therapists. Everything here is for psychotherapists and psychiatrists who bill MassHealth members.

MassHealth timely filing and appeals: know who denied the claim first

Timely filing is the deadline for getting a claim to a payer, and an appeal is your written request to reverse a denial. With MassHealth, the payer is either the state’s fee-for-service program or a plan the member is enrolled in. Look at the member’s plan on the remittance advice (ra) or eligibility check before you do anything else. Sending a managed care denial to MassHealth, or the reverse, is the most common way a good appeal dies.

MassHealth’s own billing page says claims for members in a managed care organization (managed care organization (mco)) go straight to that plan. The same page says Primary Care Clinician (PCC) Plan members with behavioral health claims go to MBHP, the Massachusetts Behavioral Health Partnership, and not to MassHealth. Source: MassHealth billing timelines and appeal procedures.

Medicaid fee-for-service: the 90-day rule, waivers and final deadline appeals

For members paid directly by MassHealth, a timely filing limit of 90 days from the date of service (DOS) applies to initial claims. If another insurer must pay first, the 90 days run from the date on that insurer’s explanation of benefits (EOB). A separate final deadline sits behind it: 12 months from the DOS, or 18 months when another carrier was billed first.

• 90-day waiver: MassHealth lets providers ask for a waiver when a claim misses the 90 days for a reason the regulations allow. The exceptions sit in 130 CMR 450.309. MassHealth links its waiver request form from the billing timelines page.
• Final deadline appeal: This is for a claim denied with error code 853 or 855, “Final Deadline Exceeded.” You must show that a MassHealth error caused the denial and that you could not have resubmitted in time. File within 30 days of the RA date on which the claim first denied with 853 or 855.
• How to file: Final deadline appeals go in electronically through Direct Data Entry (DDE). Paper is allowed only for providers with an approved electronic claim submission waiver. A paper appeal needs a cover letter with a valid email address, the corrected claim, every RA the claim appeared on (including the 853 or 855 denial) and any supporting documents.
• No appeal at 36 months: A claim received more than 36 months after the DOS denies with 856 or 857. MassHealth says those cannot be appealed.

Keep each RA. The RA with the first 853 or 855 starts your 30-day clock, and MassHealth asks for it back.

Medicaid managed care: plan-by-plan deadlines, where the appeal goes, and best proof

For MassHealth timely filing and appeals, managed care plans set their own filing limits and dispute windows inside the MassHealth framework, so one plan’s deadline tells you nothing about another’s. These are the figures from each plan’s own documents. Your contract can override any default, so check it. For background on how these plans fit together, see our Medicaid managed care resource.

• WellSense (MassHealth MCO and ACO): WellSense says to file within 150 days for MassHealth. Its administrative claims appeals policy gives 150 calendar days from the original denial and no later than 300 calendar days from the DOS, and dismisses late appeals. Submit through the provider portal or by mail to the Provider Administrative Claim Appeals unit. Send the Universal Request for Claim Review Form, a written narrative, the claim, the RA and any other-carrier EOB. WellSense says no extra information is accepted after a decision. See the WellSense appeals policy.
• WellSense Senior Care Options (SCO): The same appeals policy covers SCO, with the same 150-day and 300-day limits. A Carelon addendum lists a 150-day filing limit for WellSense SCO as well.
• Tufts Health Together (MassHealth MCO and ACO): The Tufts Health Public Plans manual lists 90 days from the DOS for professional claims and gives a 60-calendar-day window to appeal from the Explanation of Payment (EOP) date. It says timely filing denials are generally not reviewed unless an exception applies, such as retroactive MassHealth enrollment, and you must attach proof of the exception. Send disputes through the claims adjustment tool on the provider portal or by mail with the Request for Claim Review Form, one claim per form. See the Tufts Health Public Plans claims chapter.
• Tufts Health Plan SCO: The Tufts senior products manual sets a 60-day filing limit for professional claims. It allows a filing deadline review within 120 calendar days of the EOP showing the original denial, and it will not consider later requests. Acceptable proof for electronic claims is a claim acceptance report with a Tufts claim number plus a matching clearinghouse acknowledgment or 277CA.
• Fallon Health: Fallon’s timely filing payment policy, effective June 1, 2021, sets 120 days from the DOS unless your contract says otherwise. It sets 120 days from the initial denial or Remittance Advice Summary (RAS) for adjustment requests and provider appeals, in writing. See the Fallon timely filing policy. A Carelon addendum lists 120 days for all Fallon products.
• Commonwealth Care Alliance (CCA): The 2026 CCA provider manual says in-network providers file within 90 days of the DOS unless the provider agreement says otherwise. Non-network providers have 12 months. The manual’s appeals section says 65 days from the denial, and says contracted providers use the payment dispute process in its claims section, so read that section against your contract. See the CCA provider manual.
• Behavioral health vendors (MBHP and Carelon): Carelon’s Massachusetts addendum gives 60 days from receipt of an administrative denial for payment appeals when authorization procedures were not followed. That is a different problem from a late claim, so do not assume 60 days applies to timely filing. See the Carelon Massachusetts addendum.

Two more cautions. WellSense moved behavioral health claims in-house for dates of service on or after January 1, 2026, so older Carelon rules may not apply to newer claims. Also, some plans set year-end cutoffs. Tufts Health Together set July 9, 2026 for outstanding 2025 MassHealth claims, corrections and appeals. For any plan not listed here, check its manual and your contract before you count days.

What proof wins a timely filing appeal?

The best proof for MassHealth timely filing and appeals is a dated record that shows the claim reached the payer and was not rejected. A clearinghouse acceptance report, a payer acknowledgment (277CA) or an EOB from the primary insurer all do that job. Tufts says a copy of the original claim form, a transmission report with no matching rejection report, or a verbal request is not enough. For more, read our guide to proof of timely filing for behavioral health.

If you also need to fix a claim, a corrected claim may be the right route and not an appeal. Our guide on choosing a corrected claim or an appeal walks through that choice. CCA’s manual says corrected claims should not go through the appeal process.

How long do I have to appeal a MassHealth timely filing denial?

For MassHealth timely filing and appeals, the answer depends on who denied the claim. MassHealth fee-for-service gives you 30 days from the RA for a final deadline appeal. The managed care plans listed above range from 60 to 150 days, and some run from the denial date while others run from the date of service. Read the denial, find the plan, then read that plan’s manual.

Medicare and commercial plans in Massachusetts

This section is separate on purpose: MassHealth rules do not apply to Medicare or to private insurers. Commercial plans in Massachusetts follow their own contracts and state prompt-pay rules, which we cover in our Massachusetts prompt-pay law guide. Check each payer’s manual for its filing and appeal windows.

Monday morning: a step list for MassHealth timely filing and appeals

1. Pull the RA or EOP and note the denial code and the denial date.
2. Confirm which plan or program paid for the member on the DOS. Retroactive enrollment changes the answer.
3. Find that plan’s filing and appeal window and count from the date the plan uses.
4. Gather proof: clearinghouse reports, 277CA, other-carrier EOB and every RA.
5. Fill the plan’s claim review form, one claim per form, and write a short narrative of what happened.
6. Send it the way the plan prefers, portal first, and save the confirmation.
7. Put a follow-up date on your calendar. For an overview of denial work, use our claim denials and appeals resource and this appeal letter guide for denied therapy claims.

Enrollment problems cause many denials that look like timely filing. Our MassHealth provider enrollment guide and the MassHealth billing updates page help you catch those early.

The short version: masshealth timely filing and appeals

For masshealth timely filing and appeals, find the payer first, then the clock. MassHealth fee-for-service gives 30 days from the RA for a final deadline appeal. Managed care plans set their own windows, so confirm each one in the plan’s manual and your contract.

How MCM South helps

MCM South is a billing company that works only with mental and behavioral health providers, including psychotherapists and psychiatrists. We track denials, work out which payer owns the claim, assemble proof and prepare appeals for you to review. You keep control of every appeal that goes out. We do not give legal advice, so ask an attorney if a denial involves real legal exposure.

Where MCM South works

MCM South serves providers in ten currently served states: Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina and Illinois. Find payer contacts in our insurance companies contact directory.

Sources checked (November 2, 2026)

• MassHealth billing timelines and appeal procedures
• MassHealth claims submission (billing and claims)
• MassHealth All Provider Bulletin 226 (Final Deadline Appeal / Request for Claim Review form)
• MassHealth Final Deadline Appeal FAQs
• WellSense Provider Administrative Claims Appeals Policy
• WellSense Submit Claims (MA)
• WellSense behavioral health claims notice (12/04/25)
• Tufts Health Public Plans Provider Manual, claims chapter
• Tufts Health Plan SCO / Medicare Preferred claims chapter
• Tufts Health Together outstanding 2025 claims deadline notice
• Fallon Health timely filing payment policy (eff. 6/1/2021)
• Commonwealth Care Alliance 2026 provider manual
• Carelon Behavioral Health Massachusetts addendum

Frequently asked questions