Medicaid’s frailty test asks for a code and proof of impairment, and clinicians hold both

The week

On June 1, 2026, CMS issued an interim final rule implementing the Medicaid community engagement requirement created by the July 2025 budget reconciliation law. It was published in the Federal Register on June 3, with comments due and the rule taking effect on July 31. Adults aged 19 through 64 in the affected group must show 80 hours a month of work, education, a work program or community service, or equivalent income, unless exempt. States must implement by January 1, 2027. Exemptions include pregnant and postpartum individuals, tribal members, certain caregivers and people who are medically frail. The rule set out how states should identify medical frailty: through defined condition categories, state-maintained lists of ICD-10 codes, and claims and administrative data first. In early July, health systems and Medicaid plans were reading what that meant for them.

Earlier in this series we looked at the state side of the build: how much of the requirement agencies could verify from data they already hold. The interim final rule added a detail that moves part of the work to providers. Medical frailty is one of the broadest exemptions, and the rule ties it to diagnoses that appear in claims and records. It also says a diagnosis alone is not enough: the record must show that the condition significantly impairs the person’s ability to meet the requirement. That makes the quality of clinical documentation and coding a factor in whether an exempt person is recognized as exempt. For health systems and the plans that pay them, three parts of the chain matter, in the order a case moves through it: how conditions are coded, how frailty is documented when the data falls short, and how that information reaches the state.

Coding: what the claims say

The rule keeps the five statutory categories of medical frailty and bars states from adding to them. They are blindness or disability; substance use disorder; disabling mental disorders; physical, intellectual or developmental disabilities; and serious or complex medical conditions. States must maintain auditable, regularly updated lists of qualifying diagnosis codes. Before asking the individual anything, they must check claims and encounter data, but only from the preceding 12 months. According to KFF’s analysis, the rule is explicit that a diagnosis by itself cannot verify frailty. States are left to infer impairment from signals such as acuity, utilization, prescriptions and durable equipment, and to audit their own findings.

That design rewards specific coding. A claim coded with a general symptom rather than the underlying serious condition may not match a state list. A mental health condition documented in notes but not coded on claims may be invisible. A serious condition last treated 13 months ago falls outside the window entirely, and a coded diagnosis with little treatment recorded around it may not read as impairing. Conditions treated outside Medicaid-paid settings, such as at a free clinic or under another payer before enrollment, may not appear at all. None of this is new to coding teams, who already work on specificity for risk adjustment and quality measures. The difference is the stakes. Here a missing code can lead to a request to prove work hours that the patient cannot meet, and possibly to loss of coverage.

Health systems can act on this in familiar ways. They can compare state code lists against their own problem lists and claims for Medicaid patients in the affected age group. They can target documentation improvement at conditions that appear on the lists but are often coded nonspecifically. They can also check that behavioral health and substance use services delivered in their clinics generate claims with diagnoses, which is not always true under bundled or grant-funded arrangements.

Documentation: when the data falls short

The rule allows self-attestation of medical frailty only when the state’s own data review cannot verify it. Through 2027 states may accept it in that situation. From January 2028, according to summaries by KFF and Holland & Knight, attestation is generally available once per continuous enrollment period. Later renewals need documentation, such as a provider certification or medical records. Frailty must also be reverified at least every 12 months.

That sends a new kind of request to clinics. A patient, a plan care manager or the state may ask a physician to certify that a condition significantly limits the patient’s ability to work. Most practices do not have a standard form, a defined turnaround or a clear rule about who signs. Without them, requests will land in inboxes and wait. The renewal clock will not.

A workable process has four elements. There should be one intake point for certification requests. There should be a template that maps to the state’s categories and asks for the functional impact the rule requires, and not only a diagnosis. Clinicians need guidance on what they can attest to from the record. And someone should track turnaround against renewal dates. Health systems should ask counsel how these certifications fit with existing disability and work-capacity forms, and what liability attaches to them.

Exchange: how the information reaches the state

The third part is the path from provider to state. Claims reach the state through Medicaid billing, often with a lag. Certifications and records will travel by whatever channel each state designs: portals, fax, plan intermediaries or health information exchanges. The rule lets managed care plans do outreach, make referrals and share information with the state, including frailty status, but not make eligibility or compliance determinations.

That gives plans a useful role. A plan with claims across many providers may identify likely frailty before the state does, and pass it along in a form the state accepts. Health systems that already exchange data with plans for care management can add frailty-relevant information to those feeds, within privacy rules. Substance use disorder records under 42 CFR Part 2 need particular care, and organizations should confirm with counsel what consent or legal basis applies before sharing them for eligibility.

Timing matters as much as content. Claims can take weeks to be submitted and adjudicated, so a diagnosis made in December may not be in the state’s data when a January check runs. Newly enrolled adults may have little Medicaid claims history at all. Health systems can shorten the lag by submitting claims promptly for this population and by making sure diagnoses from emergency and inpatient encounters, which often reveal serious conditions first, are coded completely.

With hindsight

From October 2026, most states are less than three months from the January implementation date. Nebraska, which began enforcing its requirement on May 1, offers the first evidence. Its health department reviews claims about 90 days before renewal and treats members with qualifying diagnosis or procedure codes as exempt without further action. KFF’s September analysis of Nebraska’s data found medical frailty accounted for 39% of exclusions at renewal in July and August, and that most coverage losses followed non-response to information requests. Renewing members have claims history that new applicants lack, which is the gap described here. CMS projected that about 2.3 million people would lose coverage in 2027, and the Congressional Budget Office’s estimates were higher. How many losses fall on people who should have been exempt will not be measurable until 2027 renewals. The comment period closed on July 31, and organizations should watch for revisions to the rule.