Purchased/Referred Care, explained.
The program that pays when an IHS or tribal facility cannot provide the care itself, and the four conditions that make it far more constrained than outsiders assume.
Purchased/Referred Care is one of those programs that everyone inside the IHS system understands intuitively and almost nobody outside it understands at all. That gap causes real problems, for patients who assume a visit is covered, for outside hospitals billing the wrong party, and for vendors pitching tribal health programs on economics they have not bothered to learn.
The short version
The Indian Health Service delivers care directly at its own facilities and at tribally operated facilities. When a patient needs care that the local facility cannot provide, PRC is the mechanism by which IHS pays an outside provider for it.
That is the whole concept. The complications are all in the conditions.
The conditions
Eligibility is not the same as being an IHS patient
PRC eligibility generally requires that a person be a member of, or in some cases a descendant of a member of, a federally recognized tribe, and that they reside within a defined Purchased/Referred Care Delivery Area associated with the program. Someone who is unambiguously eligible for direct care at a facility may still not be eligible for PRC.
IHS is the payer of last resort
Statute directs that PRC pays after other resources. Medicare, Medicaid, private insurance, VA benefits, and state programs are pursued first. Programs spend substantial staff time on alternate resource determination, and a patient who declines to apply for coverage they are eligible for can jeopardize PRC payment.
Notification deadlines are real and short
For emergency care received outside the system, notification to the PRC program must happen within a defined window after the visit. Miss it and the claim can be denied regardless of medical necessity. This is one of the most common ways patients end up personally liable for a bill they reasonably believed was covered.
Care is prioritized when money is short
PRC programs apply a medical priority framework, funding the most urgent categories first. When the allocation is constrained, lower-priority services are deferred. “Deferred” is the program's word; from the patient's side it can be indistinguishable from denied.
A tribal health program managing PRC is doing something closer to running a fixed-budget insurance plan than to running a clinic. Every dollar spent on care that did not need to be purchased is a dollar unavailable for care that does.
Why after-hours access sits in the middle of this
The category of PRC spending most sensitive to what happens at night is emergency department use at outside hospitals. It is expensive, unscheduled, and partly discretionary, not in the sense that patients are being frivolous, but in the sense that a portion of after-hours ED volume nationally is for conditions treatable in primary care the next day.
The lever on that portion is not patient education. It is having somewhere else to call. We work through that argument in detail here, including how to size it against your own data rather than a vendor's assumption.
A note for vendors and outside providers
If you are selling into tribal health and you have not internalized how PRC works, it will show. Pitches built on commercial-payer economics (per-member per-month savings, shared-risk arrangements, utilization curves drawn from commercially insured populations) land badly on a program whose actual constraint is an appropriation that runs out.
Questions people ask
Is Purchased/Referred Care the same as insurance?
No. PRC is a payment program of limited scope, funded by annual appropriation and subject to eligibility rules, notification deadlines, and medical priority. It does not function like a health plan, and it is generally the payer of last resort behind Medicare, Medicaid, and private coverage.
Why was the name changed from Contract Health Services?
The program was renamed Purchased/Referred Care in 2014. The intent was descriptive accuracy (the program purchases care and manages referrals) rather than any change in how it works. Older documents, and plenty of people who have worked in the system a long time, still say CHS.
Do Urban Indian Organizations have PRC?
No. PRC operates through IHS-operated and tribally operated facilities. Urban Indian Organizations, funded under Title V of the Indian Health Care Improvement Act, sit outside it, which is a distinct and often overlooked gap. More on the UIO situation.
Sources
- Indian Health Service, Purchased/Referred Care program documentation.
- 42 CFR Part 136, Indian Health regulations.
- Indian Health Care Improvement Act, 25 U.S.C. § 1621e (payer of last resort).
General explainer only. Eligibility, deadlines, and priority determinations are set by regulation and administered locally; verify against the current CFR and your PRC office.
Talk to the people who built the line.
TULQ is launching in 2026. If you are scoping coverage, responding to a solicitation, or just want to know what this would look like for your organization, we would like to hear from you.