The first four parts of this series kept circling back to a single phrase: the resolved case. Not the appointment booked, not the procedure performed, not the queue shortened. The case actually closed, for the patient, at a sensible cost.
That instinct has a name, a literature, and a Harvard professor behind it. This part is about giving it its proper frame, because everything the next three pieces propose, how to pay for care, where to concentrate it, how to measure it, depends on agreeing first on what we are trying to buy.
We are measuring the wrong thing
Walk into almost any health system and ask how it is performing. You will be handed activity and access. How many consultations, how many procedures, how many beds, how long the wait. All real, all important, and none of them the point.
In 2010, Michael Porter put the problem more sharply than anyone before or since. The goal of a health system, he argued, should be value, and value has a precise definition: the health outcomes achieved for the patient, divided by the cost of achieving them.
Value: the health outcomes that matter to the patient, per euro spent across the full cycle of care.
It looks almost too simple to be useful. It is not. Almost nothing in healthcare is actually measured this way. Porter pointed out that of the 78 measures in the most widely used quality system of the day, all but five captured process rather than outcome, and none were true outcomes at all. We grade ourselves on whether we followed the steps, not on whether the patient got better.
Outcomes mean what the patient feels, not what we did
The numerator is the hard part, and the part most "value" programmes quietly skip.
An outcome is not "the knee replacement was performed within the target time." That is access. An outcome is whether, a year later, she can climb her own stairs without pain. It is whether the man with diabetes still has his foot. It is whether the patient got back to work, slept through the night, made it to the wedding. These are the things people actually came for, and they are almost never on the dashboard.
Measuring them is real work, and a body called ICHOM has spent over a decade doing it. Since 2012 it has built standardised sets of patient-centred outcome measures, the specific questions you ask patients to capture whether their life genuinely improved, now spanning enough conditions to cover the majority of the global burden of disease. This is the machinery that turns "outcomes that matter" from a slogan into a number you can track and compare.
Cost means the whole journey, not the line item
The denominator trips people up in the opposite direction.
Cost, in Porter's equation, is not the price of a scan or a bed-night. It is the total cost of the full cycle of care for a condition, from first symptom to final resolution. And that distinction produces the single most counterintuitive idea in health economics, the one this series has been circling since Part 3.
To lower the total cost of care, the right move is often to spend more on some things so you need far less of everything else.
Spend more on the diabetes nurse and the patient education, and spend vastly less on the amputation and the emergency admission. Read line by line, the nurse is a cost. Read across the whole cycle, she is the cheapest thing you will buy all year. A system that budgets line by line cannot see this. A system that thinks in value cannot unsee it.
The honest caveat
Now the part the brochures leave out, because this series has made a habit of it.
Value-based healthcare is preached far more than it is practised. The word "value" is used loosely enough that reviews of the literature keep finding the same thing: most projects measure one piece of the equation and ignore the rest, and the concept's core assumptions have rarely been tested properly in the messy reality of chronic care. The outcome measures themselves are expensive to build, fiddly to match to the right patient, and harder still to wire into a working clinic.
So value-based healthcare is not a dashboard you buy. It is a discipline you adopt, and as with coordination back in Part 2, adopting the vocabulary is not the same as doing the work. A system that says "value" and keeps counting activity has changed nothing but its slides.
The goal is easy to state and brutal to implement. That is precisely why stating it clearly matters.
Why this is the hinge of everything that follows
Here is why this piece sits where it does.
If you accept that the goal is value, outcomes that matter per euro across the cycle, then the resolved case from earlier in the series stops being a metaphor and becomes a unit of account. A closed case is an outcome delivered at a cost. That is value, measured.
And it frames the three questions the rest of the series will take on:
- If value is what we want, how do we pay for it, when nearly every system still pays for volume? That is next week.
- Where is value won or lost most heavily, and who should we concentrate on first?
- And how do we measure it without drowning, so the feedback loop actually closes?
We spent four parts establishing that nobody owns the patient's case. This part adds the harder truth sitting underneath it: even where someone does, we are usually measuring whether they were busy, not whether the patient is better.
Change the number you optimise for, and everything downstream, who you pay, how, and for what, has to change with it.
Next week: how you actually pay for value, and why fee-for-service quietly sabotages almost every attempt.
Sources
- Porter M.E. (2010), "What Is Value in Health Care?", New England Journal of Medicine 363:2477-2481. doi.org/10.1056/NEJMp1011024. On value as outcomes per dollar across the full cycle of care, the primacy of outcomes over process measures, and spending more on some services to reduce the need for others.
- Porter M.E., Teisberg E.O. (2006), Redefining Health Care: Creating Value-Based Competition on Results, Harvard Business School Press. On value-based competition and measuring outcomes that matter to patients.
- International Consortium for Health Outcomes Measurement (ICHOM). ichom.org. On standardised, patient-centred outcome sets and their coverage; see also "Outcomes That Matter to Patients: ICHOM as a Catalyst for Value-Based Care," NEJM Catalyst (2024).
- On implementation difficulty and conceptual looseness: reviews of value-based healthcare and of PROM implementation, including van der Nat et al. and related work in BMC Health Services Research and BMC Medical Informatics and Decision Making (2021-2022).
Part 5 of the series. Earlier parts covered the foundation, why coordination fails, the misrouting problem, and who owns the case. Part 6 covers how to pay for value.