Starting Jan. 1, 2027, New Mexicans who are 65 and older and hold a Medigap policy get a 60-day window every year, opening in the birthday month, to move to another plan without health questions standing in the way. West Virginia’s version took effect on June 11, 2026. New Mexico’s aging department says more than 70,000 people in the state are enrolled in Medigap.
Senate Bill 21 opens a 60-day window in the birthday month
New Mexico’s Aging and Long-Term Services Department announced the change in a release on the signing of Senate Bill 21, dated March 11, 2026. Governor Michelle Lujan Grisham signed the bill, which takes effect Jan. 1, 2027. Under it, Medicare beneficiaries who are 65 and older receive an open enrollment period that begins in their birthday month and lasts 60 days. The department says the opportunity comes yearly, so each birthday reopens the chance to switch.
During that window, a policyholder may switch to a plan of equal or lesser value, and the insurer cannot deny coverage or charge higher rates because of the person’s health status. In practice that removes the health questions that can otherwise decide whether a switch is possible and at what price.
Emily Kaltenbach, the department’s secretary, framed the change around that lock-in. “New Mexicans deserve freedom to choose coverage that meets their needs without being locked into a plan because of their health history,” she said in the release. “This change helps ensure our seniors can access affordable, flexible coverage as their health care priorities evolve.”
What “equal or lesser value” allows and what it leaves out
The limit written into the New Mexico law is the direction of the move. The window lets a policyholder go to a plan of equal or lesser value, which is a rule about staying level or stepping down in coverage. It does not open a route to a richer plan without health-based underwriting, at least in the department’s description of the law.
For a household budget, the practical effect falls on premiums. A retiree who has held a supplement for years and watched the monthly bill climb can shop for a similar plan from another company, and the insurer cannot turn the person away or price the policy higher because of a medical history. The release does not define “value” by plan letter or list which plans count as equal or lesser, so the details of that comparison sit with the state’s insurance rules and the insurers’ own plan documents.
The window is also tied to the calendar. Sixty days from the start of the birthday month is a short stretch, and a person whose birthday month passes without action waits for the next one.
Why 70,000 New Mexicans matter to the rule
The aging department says the law is expected to benefit more than 70,000 New Mexicans enrolled in Medigap. That is the state’s count of Medigap enrollees, and the release presents it as the population the law is expected to reach. The trade publication DistilINFO, in a summary of the two states’ new rules, repeats the same figure of more than 70,000 people across the state.
No national tally of states with a birthday-style rule is stated here. The sources read for this article describe New Mexico and West Virginia, and each state writes its own conditions.
West Virginia’s House Bill 4869 took effect June 11
West Virginia acted first. The Legislature’s bill history for House Bill 4869 shows the governor signed the bill on March 27, 2026, with an effective date ninety days from passage, which fell on June 11, 2026. The status page describes the bill as creating narrow, clearly bounded guaranteed-issue rights for Medicare Supplement policies in West Virginia.
DistilINFO covered the West Virginia and New Mexico laws together as two states launching Medigap birthday-rule protections, and it lists June 11, 2026 as the West Virginia start date. The bill’s chapter number is 185 of the 2026 Acts, according to the Legislature’s record.
West Virginia attaches conditions that New Mexico’s release does not mention
The DistilINFO summary spells out two conditions in West Virginia. A beneficiary must have continuously held the Medicare supplement policy for at least 24 months as of the replacement plan’s effective date, so newer enrollees do not qualify right away. The switch is also limited to a plan offered by the same insurer or an affiliated carrier, unless comparable coverage from that insurer is unavailable.
New Mexico’s release describes a different structure: an annual window for people 65 and older, a move to a plan of equal or lesser value, and no mention of a minimum holding period. The two states therefore share a purpose, easing the health-based barriers to changing a supplement, while writing different eligibility tests. A policyholder in either state has to read the state’s own rule rather than assume the other’s applies.
Where to confirm each state’s rule
The New Mexico effective date and window come from the state agency’s own release, and the West Virginia dates come from the Legislature’s bill record. Both are worth reading directly before a birthday month arrives, because the release summarizes the law rather than reproducing its text, and details such as the definition of equal or lesser value are set by the statute and the state’s insurance regulators.
Medigap switching windows and the wider plan comparison
New Mexico’s Senate Bill 21 lets Medigap holders move to a plan of equal or lesser value during a yearly birthday window, and West Virginia’s House Bill 4869 does something narrower. The rules say when a switch cannot be refused on health grounds, but leave the comparison of costs to the policyholder.
The 2027 Medicare Open Enrollment Decision Kit includes a cost calculator spreadsheet that compares plans on cost, drugs and doctors, a prescription-by-plan comparison and a provider call script.
Compare plans on cost, drugs and doctors →
This article was prepared with AI assistance and checked against the cited New Mexico and West Virginia sources.
