One engine, every attested output

Software can do the work.
A physician still has to stand behind it.

A Letter of Medical Necessity, a wellness visit's prevention plan, an advance care planning discussion, a month of remote monitoring — different codes, one requirement underneath. Somebody licensed reviewed it, decided, and put their name on it. We make that step take minutes and leave a record anyone can check.

The pattern

Draft, attest, defend. The middle step is the product.

Every service on this page has the same shape. Automation is good at the first step and useless at the second — and the second is what payers, plan administrators and auditors are actually paying for.

Step 1

Something is drafted

A care plan, a letter, a monitoring summary, a discussion note. Increasingly by AI, from real data.

Step 2 · us

A named physician attests

Specialty-matched, licensed in the patient's state, paid a flat fee whichever way the answer goes. Minutes, not days.

Step 3

The record proves it

NPI-bound, timestamped, hash-anchored. What was reviewed, under which criteria, on what day — checkable years later.

Result

It bills, or it holds up

The claim has its required signature; the letter has its basis; the audit has an answer that cannot be rewritten after the fact.

Where the signature is the requirement

The same attestation, across a growing list of services.

Codes and program rules below are the billing context our partners work in — they are not our determinations, and nothing here is coding or billing advice. What we supply in each case is the attested record.

Letter of Medical Necessity

IRC §213(d)

Pre-tax spend on a dual-purpose product or service. Eligible only if it treats a diagnosed condition — the but-for test, applied one person at a time.

What we attest: that a licensed physician reviewed this person's case against published criteria and determined the expense is, or is not, medically necessary. Live today across nine conditions.

Annual Wellness Visit

G0438 · G0439

Medicare's yearly prevention visit: a health risk assessment and a personalized prevention plan. The assessment is exactly the kind of structured intake software does well.

What we attest: that the prevention plan generated from the patient's answers was reviewed and adopted by a clinician — not auto-generated and filed.

Advance Care Planning

99497 · +99498

A voluntary discussion of goals of care and advance directives, billed in time increments. Almost always involves a family member, and almost never gets documented as carefully as it deserves.

What we attest: that the discussion summary reflects what was said, that the family member's role is recorded, and that a physician adopted it. See the caregiver note below.

Remote Therapeutic Monitoring

98975–98981 · 98984–98986 · 98979

Device supply and treatment management for musculoskeletal, respiratory and adherence data — the exercise-therapy category's clinical twin. For 2026 CMS added 2–15 day device codes and a 10–19 minute management code, which require at least one real-time interactive communication with the patient or caregiver in the month.

What we attest: that a clinician reviewed the monitoring period and made a management decision, with the data snapshot fingerprinted alongside it.

Remote Physiologic Monitoring

99453 · 99454 · 99445 · 99457 · 99470

Setup, device supply and clinical management time for physiologic data — blood pressure, glucose, weight. 2026 adds a 2–15 day device code and a 10–19 minute management code. Note CMS treats RPM and RTM as non-face-to-face services, not telehealth — a different rulebook and a different clock.

What we attest: the review event itself — who looked, when, at what, and what they decided. The part that is hardest to evidence and easiest to lose.

Chronic & Principal Care Management

99490 · 99439 · 99424–99427

Ongoing management of chronic conditions between visits, with a care plan that has to be established, reviewed and revised.

What we attest: each care-plan revision as a discrete, signed event rather than a document that quietly changes over time.

Transitional Care Management

99495 · 99496

The days after discharge — the window where families are most overwhelmed and where co-op.care's work already sits.

What we attest: the post-discharge review and the decisions taken in it, including anything a caregiver reported on the patient's behalf.

Long-term care certification

IRC §7702B(c)

Personal and maintenance care becomes a qualified medical expense when it is required by a chronically ill individual — certified by a licensed practitioner as needing substantial assistance with two or more activities of daily living for 90 days, or substantial supervision for severe cognitive impairment — and delivered under a plan of care prescribed by a licensed practitioner. The certification must be renewed every twelve months.

What we attest: the certification and the plan of care, dated and anchored, with the annual renewal tracked. This is the determination that turns a family's care hours into a payable expense — and the one almost no family currently has on paper.

Caregiver training services

MEDICARE PFS

Medicare now pays a clinician to train a family member in the strategies and techniques that keep the patient functioning at home — transfers, fall hazards, memory aids, device use. Confirm the current code set and coverage rules with your billing team before you rely on them.

What we attest: that a clinician set the training plan against the patient's diagnosis, and that the session delivered it. The family's hours become documented care instead of invisible labour.

Group caregiver training

MEDICARE PFS

Group behaviour-management training for caregivers of patients with a diagnosed condition — the dementia support group, made billable. Code set and coverage rules to be confirmed with your billing team.

What we attest: the clinical basis for each family's participation, so a group session is a set of individual determinations rather than an attendance list.

Navigation & community integration

CHI · PIN

Community health integration and principal illness navigation pay for the unglamorous work — coordinating services, addressing the barriers that stop a care plan from happening at home.

What we attest: the clinician's authorisation of the navigation plan and the diagnosis it hangs on, so the coordination has a signature behind it.

Behavioural health integration

99484 · 99492–99494

Collaborative care, where a consulting psychiatrist's review is a structural requirement of the model.

What we attest: the consultant's review event. Exploratory for us — the privacy bar here is higher than anywhere else and we will not enter it casually.
The family, on the record

Medicare already pays for what families do. Almost nobody claims it.

The GUIDE Model — Guiding an Improved Dementia Experience — is a voluntary nationwide CMS Innovation Center model for dementia care management, offering care coordination and management alongside education, support and respite for unpaid caregivers. Both tracks run through 30 June 2032: 96 established-track participants began on 1 July 2024, and 294 new-track participants began on 1 July 2025. Respite is a separate payment on top of the care-management payment, capped per aligned beneficiary per year — CMS's programme materials put it at up to $2,500, and the current year's figure should be taken from CMS directly.

Alongside it sit the caregiver training services Medicare added to the physician fee schedule, which pay a clinician to train the daughter, the spouse, the son — in some cases with the patient not present. Every one of these requires a clinical basis, a plan tied to a diagnosis, and a clinician who stands behind it. That is a determination, and determinations are what we do. The family is not a bystander to the reimbursement; in this part of medicine they are the care being reimbursed.

292
GUIDE participants listed by CMS, read 10 September 2026 — the model runs July 2024 through June 2032
Respite
Paid separately, capped per aligned beneficiary per year; requires an unpaid caregiver
Training
Caregiver training is a payable service — the family is the care being reimbursed
Proxy
Who reported what is recorded, so the letter is honest about its source
Why now

The ACCESS Model just made "technology-supported chronic care" a Medicare payment category.

CMS's Advancing Chronic Care with Effective, Scalable Solutions model is a ten-year voluntary model that began on 5 July 2026, testing outcome-aligned payment in Original Medicare for technology-supported chronic care. It targets the conditions affecting most of the Medicare population — high blood pressure, diabetes, chronic musculoskeletal pain, depression — and participants must report outcomes and share clinical updates through FHIR-based APIs.

More than 150 organisations had been accepted by 17 August 2026, according to CMS, and most of them had never served Medicare beneficiaries before. Private payers covering a very large commercial, Medicaid and Medicare Advantage population have committed to aligning with the model's payment approach. That is a large group of digital health companies suddenly holding clinical oversight, licensure and outcome-reporting obligations they have never had to satisfy.

This is our market, arriving on a schedule. Outcome-aligned payment means somebody has to vouch that the outcome data and the clinical decisions behind it are real. Free pipes, paid brain: the FHIR connectors are commodity, and the physician standing behind the output is not.

10 years
Voluntary CMMI model, launched 5 July 2026, with rolling start dates
150+
Organisations accepted by 17 August 2026 (CMS), most new to Medicare
FHIR
Required for outcome reporting and clinical data sharing
4 tracks
Cardio-metabolic, diabetes/CKD/ASCVD, musculoskeletal pain, behavioural health
The family caregiver

Half of these services involve someone who is not the patient.

Advance care planning, transitional care, chronic care management, aging at home, and most HSA spend on a dependent parent — in all of them the person answering questions, buying the service and managing the care is a family member. Software in this space keeps assuming otherwise.

Who reported

Proxy answers are labelled

The caregiver's relationship is captured and the physician sees which answers came from the patient and which from the family. A determination built on a daughter's best guess, presented as the patient's own account, is what unravels later.

Where they live

Jurisdiction follows the patient

The reviewing physician is licensed where the patient is, not where the payer or the caregiver is.

What it unlocks

One determination, several expenses

An HSA can pay qualified expenses for a spouse or tax dependent. One attested determination about one condition can support the equipment, the home modification and the care hours that follow from it.

Why it matters

The honest no protects families most

Exhausted families are the easiest people to sell a bad letter to. A written no, at no cost, with a reason, is the most protective thing this product does.

The artefact

What every attestation leaves behind.

The same record shape whatever was attested — an LMN determination, a prevention plan, a monitoring month. Health data stays in the case; only the fingerprint goes public.

physician
Named, NPI-verified, licensed in the patient's state, specialty-matched to the case.
criteria
The versioned protocol the decision was made under, published and hash-anchored so it cannot be rewritten afterwards.
packet
Fingerprints of what was reviewed — the answers, the flags, the anchor document, the draft if there was one.
decision
Signed, declined, or returned for a document — with the written reason when it is not a yes.
timing
When it was reviewed and how long the source document was actually open.
receipt
A PHI-free hash published at hashcare.com. Verifiable by the patient, the plan administrator, the payer, or an auditor — without trusting us.
What we won't do

Rubber-stamp anything, at any volume.

Scale here means a physician's judgment reaches more decisions — not that fewer judgments are made. Every attestation is individual, every reviewer is paid the same for a no, and a service is only offered once its criteria are written and signed off by the medical director.

Nothing on this page is billing, coding, legal or tax advice, and none of it is a guarantee of payment. Codes and program rules change; your billing decisions are yours. LMN determinations are live in pilot; the remaining services are in design. No BAA is executed yet, and pilots run on synthetic data until clinical sign-off and privacy safeguards are complete.