CPI Medical Care.
Medical care CPI covers what households directly pay for healthcare — premiums, copays, prescriptions, hospital bills, professional services. It's about 8% of CPI-U, much smaller than the share of medical care in PCE, because most U.S. healthcare is paid by employers and the government.
Medical Care inflation, year-over-year
FRED:FPCPITOTLZGUSA · U.S. CPI YoY (use widget to switch to category series)
MonthlyWhat CPI medical care measures
Medical CPI is divided into medical care commodities (prescription drugs, medical supplies) and medical care services (professional services, hospital services, health insurance). The services half is larger.
One quirk to know: health insurance in CPI is measured as a retained earnings residual for insurers, not as the premium consumers pay. BLS subtracts paid benefits from premium revenue and treats the difference as the insurance 'service.' This makes health insurance CPI behave erratically — it can be deeply negative for stretches when insurer payouts rise relative to premiums.
Sub-component breakdown
| Sub-component | Approx. weight | Notes |
|---|---|---|
| Medical care services | ~6.5% | Largest piece |
| Professional services | ~3.2% | Physicians, dentists, eye care, other |
| Hospital and related services | ~2.3% | Hospital inpatient, outpatient, nursing homes |
| Health insurance | ~1.0% | Methodology: insurer retained earnings |
| Medical care commodities | ~1.5% | Drugs and medical supplies |
| Prescription drugs | ~1.0% | Outpatient drugs purchased by consumers |
| Non-prescription drugs | ~0.3% | OTC medicines |
| Medical equipment and supplies | ~0.2% | Eyewear, hearing aids, durable medical equipment |
Weights are shares of CPI-U, rounded. Exact values vary annually. Source: BLS Relative Importance tables.
What moves medical care inflation
Hospital and professional service prices are sticky and slow-moving. Negotiated rates between insurers and providers reset annually or biennially, producing step-changes rather than continuous price discovery. Medicare reimbursement rate decisions influence what private payers negotiate.
Prescription drugs respond to patent expirations (generic introduction can cut a drug's effective price 80%+), formulary decisions, and the introduction of new high-cost specialty drugs. The GLP-1 weight-loss drugs that became widely prescribed starting in 2022 illustrate how a single new product class can shift a category.
Health insurance CPI is the most confusing item in any release. Because it's computed from a retained-earnings residual with a long lag, it can show deeply negative readings even when consumers' actual premiums are rising. The October 2022 to October 2023 period saw a roughly -34% health insurance CPI reading despite rising real-world premiums — a methodology artifact, not a real disinflation.
Demographics and utilization drive long-run trend. An aging population uses more healthcare, which puts upward pressure on negotiated rates. Technology innovation simultaneously raises capability and cost.
How medical care inflation has behaved
Medical CPI has run consistently faster than headline CPI for decades — typically 1 to 2 percentage points above. The cumulative effect is dramatic: medical care prices have roughly tripled since the early 1980s while general CPI has roughly doubled. Within medical, hospital services have outpaced professional services, and both have outpaced drugs and supplies.
Frequently asked questions
Why is medical CPI smaller than the medical share of the economy?
CPI only captures out-of-pocket consumer spending. Employer-provided insurance and Medicare/Medicaid spending are excluded from CPI and instead appear in PCE.
Why does health insurance CPI sometimes go deeply negative?
BLS measures health insurance as the difference between premiums collected and benefits paid out. When benefits rise relative to premiums, this 'retained earnings' residual falls — even though consumers' actual premiums may be rising.
Does CPI include Medicare premiums?
Part B premiums paid by beneficiaries are included. The bulk of Medicare spending — financed by payroll taxes — is not.
How does CPI handle new drugs?
New drugs enter CPI through the item rotation process and through linking. Their introduction usually doesn't directly move the index because new products replace older ones at a calculated equivalence.
Why does medical CPI lag the broader economy?
Healthcare prices are negotiated, not market-cleared. Annual or biennial contract resets produce step-changes rather than continuous price discovery.
Is dental in medical CPI?
Yes. Dental services and dental insurance fall under professional services within medical care.