In Massachusetts, external review of a denied claim is handled by the Office of Patient Protection (OPP) at the Health Policy Commission, under 958 CMR 3.00 and M.G.L. c. 176O, § 14. It reaches fully insured plans licensed in the state, for denials resting on medical necessity — experimental and investigational determinations included — and there is no dollar minimum. The request goes to OPP, not the carrier, within four months of receiving the written final adverse determination, with a $25 fee capped at $75 per plan year, refundable and waivable. OPP screens it, assigns one of four contracted review agencies at random, and that agency decides within 45 calendar days, or 72 hours when expedited. The decision binds the carrier and is enforceable in Superior Court. And if the carrier missed its own 30-day internal-appeal deadline, 958 CMR 3.405(2) shifts the burden onto the carrier.
The agency here is not the insurance regulator
Massachusetts puts external review in an unusual place. The Office of Patient Protection sits inside the Health Policy Commission — the body that watches health care cost growth and market conduct — rather than the Division of Insurance. OPP moved there from the Department of Public Health effective April 20, 2013 under M.G.L. c. 6D, § 16, and the rules it applies are the Commission's own, at 958 CMR 3.00. The practical effect for a practice: appeals and carrier oversight live in two different agencies in this state.
- In scope: fully insured plans licensed in Massachusetts, for denials that turn on medical necessity, including experimental and investigational determinations.
- Outside OPP's authority: self-insured ERISA plans and products licensed in another state — those follow the plan's own process or the federal one.
- Also ineligible: cost-sharing, coding, administrative disputes, and benefits the plan explicitly excludes.
- No Surprises Act cost-sharing disputes route to the federal contractor, MAXIMUS — directly, or through OPP, which forwards them.
- No dollar threshold: 958 CMR 3.400(2) allows external review for services of any monetary value, so a small-balance denial is still eligible.
- A patient may also request an external review conference under 958 CMR 3.417.
Plan type still governs
Four months — and the clocks that run before it
Massachusetts states the window in months, not days. Under 958 CMR 3.400, the request must be filed with OPP within four months of the insured's receipt of the written final adverse determination, and the HPC's consumer page and the official form both put it the same way. No day count appears anywhere in the statute, the regulation, the form, or the agency's pages, so work from the calendar date four months out rather than converting to 120.
Two earlier clocks matter more than they look. The internal appeal has to reach the carrier within 180 days of the denial notice or EOB. And if the patient needs previously authorized services to continue during the appeal, that request has to go in within two business days of receiving the adverse determination.
- Expedited external review has its own rule: it may be filed within four months of an adverse determination OR a final adverse determination, and may be filed at the same time as an expedited internal appeal — no final adverse determination required first.
- There is no separate provider window. A provider files inside the same four months, as the patient's authorized representative.
How to file with the Office of Patient Protection
- 1
Finish the internal appeal, or go expedited
The carrier owes a written resolution on a standard internal appeal within 30 calendar days, 72 hours if expedited. For an urgent case you can file the external request alongside the expedited internal appeal instead of waiting for the final determination.
- 2
Complete the OPP request form
The current form (Rev. 5/2024) runs 11 pages. The patient completes and signs pages 2 through 9; the treating provider completes the provider certification on pages 10 and 11, which is mandatory for an expedited request.
- 3
Assemble the package
Form, the final adverse determination letter, the insurance card or member ID, medical records and provider letters, and the $25 check or money order payable to the Commonwealth of Massachusetts — or a waiver request in its place.
- 4
Send it to the regulator, not the carrier
OPP's secure online form (linked from the HPC external review page), fax to (617) 624-5046, in person, or mail to Health Policy Commission, Office of Patient Protection, 50 Milk Street, 8th Floor, Boston, MA 02109. Mail must go USPS with no signature required — anything sent by a carrier that demands a signature is returned to sender. Email is discouraged as insecure.
- 5
For an expedited request, call it in
Phone OPP at (800) 436-7757 to tell them the expedited request has been submitted.
Who reviews it, what it costs, how fast
OPP assigns the case at random. Once a request clears screening, 958 CMR 3.407 requires prompt assignment to an external review agency on a random basis, and M.G.L. c. 176O, § 14 requires the Commission to hold contracts with at least three unrelated, objective, nationally accredited agencies awarded through bidding. Four are under contract: IPRO (Jericho, NY), Kepro DBA IMEDECS (Richmond, VA), MAXIMUS Federal Services (Pittsford, NY), and ProPeer Resources LLC (Schertz, TX). OPP notifies the patient, the representative, and the carrier which agency drew the case; any additional records go directly to that agency within 10 days of OPP's letter.
- Standard decision: 45 calendar days from the agency's receipt of the referral. Expedited: 72 hours.
- Screening: OPP begins on expedited requests within 48 hours and on all others within five business days. An ineligibility notice issues within 72 hours (expedited) or ten business days, and the fee comes back.
- The carrier must send the medical file to the assigned agency within three business days of being notified.
- $25 per request, capped at $75 in fees per plan year regardless of how many requests. Refunded in full when the determination is reversed entirely in the patient's favor.
- Waived on request at or below 300% of the federal poverty level — $43,740 for a household of one, $90,000 for a household of four on the 2024 chart printed on the form — or above that on a written hardship explanation.
- The carrier pays the rest, roughly $475 to $2,250 per review per the HPC's 2024 report, and pays the whole cost including the $25 when the fee is waived or refunded. No fee is charged to a provider.
- The decision binds the carrier, is enforceable in Superior Court, and non-compliance is an unfair and deceptive practice under Chapter 93A.
The carrier's own clock can decide the case
Massachusetts gives the carrier's deadlines teeth that most states do not. If the carrier fails to deliver a written internal-appeal resolution within 30 calendar days, the HPC's guidance is that the carrier must pay for the denied service and no external review is needed at all. Separately, 958 CMR 3.405(2) provides that an external review request submitted with evidence of the carrier's non-compliance with the internal-grievance rules is to be decided in the insured's favor, unless the carrier produces substantial evidence — proof of delivery, for instance — that it met the deadlines.
So the dates are evidence. Time-stamp the appeal submission, keep the carrier's acknowledgment, and record the day the written resolution actually arrived. In a Massachusetts case those three dates can carry the whole request.
Pin down the carrier's dates before you argue medicine
What the 2024 numbers actually show
OPP publishes results, and the 2024 annual report (released April 2026) is specific. OPP screened 365 external review requests; 235 of them, or 64%, were eligible. Among eligible cases, 43.5% were overturned in whole or in part, 5.5% were resolved or withdrawn before a decision, and 51% were upheld.
The category detail is more useful than the headline for pricing a decision. Medical and surgical requests numbered 210, upheld 55% of the time and fully or partially overturned 40% of the time. Pharmacy drew 60 requests, 16 of them for GLP-1s, with 28 overturned and 5 resolved before decision. Diagnostics drew 23, thirteen of which were cancer screenings, with 4 overturned and 2 resolved for the patient. Infertility drew 16, of which 6 were overturned in whole or part. Inpatient drew 8, all upheld but one that resolved. Of 54 eligible experimental or investigational requests, 21 ended in the patient's favor. Outpatient drew 67, of which 28 were resolved for the patient.
The most controllable figure sits on the other side of the ledger. Just under half of the 2024 requests found ineligible failed only because the package was incomplete — a missing signature or attestation. Checking every signature block and the provider certification before the envelope goes out removes the single most common way a Massachusetts request dies.
For Massachusetts providers and billers
The front end changed on 06/05/2026, when the Division of Insurance promulgated revised 211 CMR 52.00 (Managed Care Consumer Protections and Accreditation of Carriers). The revisions bar prior authorization outright for emergency and urgent care, primary care, preventive services, radiology imaging after a cancer diagnosis for staging or treatment planning, maternity care, outpatient substance use disorder treatment, physical and occupational therapy, and medications for serious mental illness and certain chronic conditions.
Three more provisions are worth invoking by effect. Urgent requests get a decision within 24 hours. An authorization stays valid for the duration of treatment for a patient stable on a chronic condition. A new carrier must honor an existing authorization for at least 90 days after a plan switch. Carriers also have to publish their PA requirements and give providers advance notice before changing them.
Two things to keep straight if a vendor or a colleague suggests otherwise. We found no gold-carding statute or regulation in Massachusetts. And the broader legislative reform, H.4616 / S.1403, was still in House Ways and Means as of 07/29/2026 and is not law. The statutory backdrop remains M.G.L. c. 176O — § 25 on standardized prior-authorization forms, § 12 on utilization review, and §§ 12A and 12B on step-therapy reporting.
Frequently asked
How long do I have to file an external review in Massachusetts?
Who runs external review here — the Division of Insurance?
Is there a fee?
Who picks the reviewer, and how fast is the decision?
What if the carrier missed its own internal-appeal deadline?
How often does the reviewer overturn the plan in Massachusetts?
Primary sources: Massachusetts HPC — Request an External Review of a Health Insurance Decision; M.G.L. c. 176O, § 14 — external review; fees; random referral; timelines; 958 CMR 3.00 — Health Insurance Consumer Protection (HPC); 2024 Office of Patient Protection Annual Report (published outcomes); CMS CCIIO — External appeals (state vs. federal process); 45 CFR 147.136 (internal claims, appeals & external review); HealthCare.gov — external review process. General information, not legal or medical advice — confirm against the governing rule for the plan type.
When the appeal has to be written, and cited
Upload the denied EOB and Merits returns a complete, citation-verified appeal letter — the clinical argument, the payer's own coverage criteria, and your federal appeal rights — in about a minute.
