PIN vs CHI: which Medicare navigation benefit fits?

Medicare introduced both benefits in the same rulemaking, in January 2024, and they're frequently described as a pair. That's accurate but not very helpful, because they solve different problems and a family asking for the wrong one may be told no by a practice that would have said yes to the other.

So here is the distinction, made as sharp as it can honestly be made.

PIN exists for the situation where the diagnosis itself has overwhelmed a household's capacity to manage it. There's no fixed list of qualifying conditions — the judgment belongs to the treating practitioner, who has to believe the condition is serious and high-risk, expected to last at least three months, and likely to lead to hospitalization, functional decline, nursing-home placement or death without proper management.

In practice that means the illnesses families already recognise as the hard ones: cancer, advanced heart failure, serious COPD, dementia, kidney disease, serious mental illness and substance use disorders.

What a navigator does with those monthly hours is concrete:

• A person-centred assessment — understanding the diagnosis and the life it landed in, including what the patient actually wants.
• Coordinating across practitioners, facilities and home-based services so the pieces behave like one system.
• Managing care transitions, especially the fortnight after a hospital or emergency department visit.
• Health education, translated into the patient's own context and goals.
• Building self-advocacy, so the family gets better at this rather than more dependent.
• Connecting community resources when a practical barrier is quietly interfering with treatment.

That last bullet is where the two benefits touch. PIN navigators absolutely do help with rides and food when those things are getting in the way of cancer treatment. The difference is that under PIN it's a component; under CHI it's the whole point.

CHI addresses health-related social needs — the practical circumstances that determine whether medical care can be received at all. CMS's own data makes the case: in 2022, 17% of community-dwelling Medicare beneficiaries experienced food insecurity and 14% reported difficulty getting places, a figure that climbs higher among people over 85.

The needs CHI is built around:

• Transportation — no car, no driver, no accessible transit, appointments repeatedly missed.
• Food — insecurity, or the inability to follow a medically necessary diet.
• Housing — instability, unsafe conditions, an apartment a wheelchair can't get into.
• Utilities — heat, electricity or refrigeration for medications at risk of being cut off.
• Personal safety and interpersonal violence.
• The paperwork layer: applications, benefits, forms nobody can face alone.

CHI is explicitly designed to be delivered by community health workers — people who know the local resource landscape and often the community itself — working under a treating practitioner's supervision.

Both follow the same shape, and knowing it prevents the most common misunderstanding — that navigation is something a practice can simply switch on.

1. 1.An initiating visit with a qualifying practitioner. This can be the annual wellness visit or an ordinary office visit — and as of 2026 the list of visits that qualify for CHI is broader than it was, because CMS dropped the requirement that the visit specifically identify an unmet social need.
2. 2.The practitioner establishes the basis — the serious condition for PIN, or the unmet need for CHI — and documents it.
3. 3.The patient consents. They must be told the service exists, that cost-sharing applies, and that they can stop at any time. This has to be recorded.
4. 4.The navigator begins, and time is tracked month by month.
5. 5.The practice bills the initial 60 minutes in a calendar month, plus add-on codes for each further 30 minutes.

The monthly rhythm is deliberate. These aren't one-off consultations; they're an ongoing relationship billed in the way ongoing relationships have to be billed in American healthcare.

The benefits are designed for different problems, and within a given month a practice bills the one that matches the work actually being done rather than stacking both for the same activity. The same restriction logic applies to the adjacent care management services — Chronic Care Management, Principal Care Management, Transitional Care Management — where a practice generally can't bill two services for the same time.

None of this should worry a family. From the outside it's one navigator doing one job; the coding is the practice's problem. What matters is that both routes lead to a named person whose responsibility is your side of the system.

Whichever fits, ask for it by name and by code. Practice staff respond to codes in a way they don't respond to general requests for help:

“Does your practice bill Principal Illness Navigation — code G0023? My father has advanced heart failure and coordinating his care has become more than we can manage.”— The version of the question that gets a real answer

If the practice doesn't offer it, that isn't the end. A patient can receive navigation through a different practice than the one treating the condition, as long as a qualifying practitioner there establishes the relationship and supervises the work. Ask the primary care office even if the specialist says no.