In 2025, about 22.8 million people are forecast to be enrolled in ACA Marketplace plans while total national health spending is expected to keep climbing to 19.7% of GDP by 2031. Yet behind the growth, insurers are managing sharply different realities, from network limits and denied prior authorizations to how efficiently claims are processed and paid. This post pulls together those contrasting data points across commercial, Medicare, and Medicaid so you can see where premiums go and where coverage friction shows up.
Key Takeaways
- In 2022, health insurance claims processing costs averaged 12-18% of premiums for commercial insurers
- Medical loss ratio for ACA individual market was 85.2% in 2022, meaning 85.2% of premiums paid out in claims
- Medicare fee-for-service spending on hospital services was $192.6 billion in 2022
- In 2023, approximately 8.4% of the U.S. population, or 28 million people, remained uninsured, down from 9.2% in 2022
- Medicaid covered 81.8 million people in the U.S. as of March 2023, representing about 24% of the population
- Employer-sponsored health insurance covered 155.4 million non-elderly Americans in 2023, accounting for 52% of the under-65 population
- In 2023, average annual premiums for employer-sponsored family coverage reached $23,968, up 7% from 2022
- Worker contribution to family premiums averaged $6,575 in 2023, representing 28% of total premium
- Average single coverage premium was $8,435 in 2023 for employer plans, with workers paying $1,401
- In 2023, 49% of U.S. hospitals were in-network for at least one major insurer's Medicare Advantage plan
- Average commercial insurer network included 1.2 million providers in 2022
- 85% of physicians participated in Medicare in 2022, billing $98 billion
- Uninsured rate projected to fall to 7.6% by 2033 under current law
- National health expenditures expected to grow 5.4% annually through 2031, reaching 19.7% of GDP
- Medicare Advantage enrollment projected to cover 51% of beneficiaries by 2024
In 2022, insurers paid out most premiums as claims, while denial and processing costs varied widely.
Related reading
01 · Category
Claims and Payouts22 stats
01
In 2022, health insurance claims processing costs averaged 12-18% of premiums for commercial insurers
02
Medical loss ratio for ACA individual market was 85.2% in 2022, meaning 85.2% of premiums paid out in claims
03
Medicare fee-for-service spending on hospital services was $192.6 billion in 2022
04
Denied claims rate for in-network claims was 16% in 2021 for commercial insurers
05
Average hospital claim payment was $25,000for inpatient stays in 2022 commercial plans
06
Medicaid paid $835 billion in benefits in FY 2022
07
Prescription drug claims totaled 4.5 billion in 2022, with average cost per claim $58
08
Medicare Advantage plans denied 6% of prior authorization requests in 2022
09
Commercial HMO denial rate for inpatient claims was 13.5% in 2021
10
Total private health insurance benefits paid out $1.3 trillion in 2022
11
82% of denied claims were for services deemed not medically necessary in 2022 Medicare Advantage
12
Average claim processing time for clean claims was 14 days under HIPAA standards in 2023
13
Outpatient claims accounted for 45% of total Medicare Part B spending, $136 billion in 2022
14
Insurers overturned 50% of appealed denials in Medicare Advantage in 2022
15
Fraudulent claims detected cost health insurers $68 billion annually
16
Emergency room claims averaged $2,200per visit in commercial insurance 2022
17
28% of claims were submitted electronically in Medicare in 2022
18
Physical therapy claims totaled 108 million services in 2022 Medicare, costing $7.3 billion
19
Insurers paid out 84% MLR in large group market in 2022
20
Medicare spent $27.4 billion on durable medical equipment claims in 2022
21
15 million prior authorizations processed annually by Medicare Advantage plans
22
Average inpatient hospital claim length of stay was 4.5 days in commercial insurance 2022
Interpretation
Claims and Payouts Interpretation
Behind a blizzard of mind-numbing data lurks the stark truth that the health insurance system is a colossal, grinding machine of enormous spending, frequent denials, and constant appeals, where getting care often feels like a bureaucratic battle against a labyrinth designed to find reasons not to pay.
02 · Category
Enrollment and Coverage20 stats
01
In 2023, approximately 8.4% of the U.S. population, or 28 million people, remained uninsured, down from 9.2% in 2022
02
Medicaid covered 81.8 million people in the U.S. as of March 2023, representing about 24% of the population
03
Employer-sponsored health insurance covered 155.4 million non-elderly Americans in 2023, accounting for 52% of the under-65 population
04
Medicare enrollment reached 65.7 million beneficiaries in 2023, with 49.7 million in traditional Medicare and 16 million in Medicare Advantage
05
In 2022, 14.5 million people enrolled in Affordable Care Act (ACA) Marketplace plans during Open Enrollment
06
TRICARE covered 9.4 million beneficiaries, including active duty military and families, as of 2023
07
CHIP enrollment stood at 9.1 million children across the U.S. in FY 2023
08
In California, 95.3% of residents had health coverage in 2022, the highest state rate
09
Texas had the highest uninsured rate at 17.4% in 2022, with 5.1 million uninsured residents
10
91.7% of U.S. children under 19 had health coverage in 2023
11
Among non-elderly adults, 10.1% were uninsured in 2023
12
Marketplace enrollment grew by 82% from 2020 to 2023, reaching 21.3 million including special enrollment
13
In 2023, 3.8 million people aged 26-27 retained coverage on parents' plans under ACA
14
Veterans Health Administration served 9.2 million enrolled veterans in 2023
15
Short-term limited duration insurance plans covered an estimated 1.5 million people in 2022
16
Medicaid expansion states had uninsured rates 6.2 percentage points lower than non-expansion states in 2023
17
In 2023, 92.0% of the total U.S. population had health insurance coverage
18
Employer coverage rates for firms with 3-199 workers was 75% in 2023
19
Medicare Advantage penetration reached 50% of eligible Medicare beneficiaries in 2024
20
ACA Medicaid expansion enrolled 20 million additional people since 2014 by 2023
Interpretation
Enrollment and Coverage Interpretation
While millions are still stranded, America's health insurance landscape is less a single safety net and more a vast, chaotic quilt of employer plans, government programs, and marketplaces, stitched together with varying success, where living in Texas versus California, or having a small employer, can be the difference between coverage and a financial cliff.
More related reading
04 · Category
Provider and Network20 stats
01
In 2023, 49% of U.S. hospitals were in-network for at least one major insurer's Medicare Advantage plan
02
Average commercial insurer network included 1.2 million providers in 2022
03
85% of physicians participated in Medicare in 2022, billing $98 billion
04
Narrow networks covered 20% of ACA Marketplace plans in 2023
05
Blue Cross Blue Shield networks included 1.7 million providers nationwide in 2023
06
65% of hospitals accepted Medicaid patients in 2022
07
Telehealth providers grew to 15,000 in insurer networks post-COVID by 2023
08
Out-of-network utilization was 12% of claims in employer plans 2023
09
Medicare Advantage plans had average network of 4,500 hospitals in 2024
10
42% of primary care physicians were in Medicare Advantage networks in narrow plans
11
UnitedHealthcare contracted with 1.5 million physicians in 2023
12
Rural hospitals had 25% lower in-network participation with commercial insurers
13
Specialist acceptance rate for Medicaid was 71% vs 96% for Medicare in 2022
14
Average network adequacy score for ACA plans was 85% of benchmark in 2023
15
30% of Medicare Advantage enrollees faced network limitations for specialists
16
Pharmacist networks for Medicare Part D averaged 68,000 pharmacies in 2023
17
Employer plans with HDHPs had 15% narrower primary care networks
18
90% of dentists accepted commercial dental insurance in urban areas 2022
19
Balance billing affected 1 in 5 emergency claims in 2022
20
Humana Medicare Advantage networks covered 95% of hospitals in 15 states 2023
Interpretation
Provider and Network Interpretation
The American healthcare system is a bewildering labyrinth where you can theoretically access over a million providers, but your actual path is a narrow, bill-laden tightrope that depends entirely on your zip code, your plan, and whether the stars align with your insurer's contracting department.
05 · Category
Trends and Projections20 stats
01
Uninsured rate projected to fall to 7.6% by 2033 under current law
02
National health expenditures expected to grow 5.4% annually through 2031, reaching 19.7% of GDP
03
Medicare Advantage enrollment projected to cover 51% of beneficiaries by 2024
04
ACA Marketplace enrollment forecasted at 22.8 million in 2025
05
Premium growth for employer plans expected at 5-6% in 2024
06
Prescription drug spending projected to rise 4.4% annually to 2031
07
Medicaid enrollment to decline by 10 million post-unwinding by 2026
08
Out-of-pocket spending growth forecasted at 4.6% annually through 2031
09
Medicare spending projected to double to $1.8 trillion by 2031
10
Narrow networks expected to cover 25% of employer plans by 2025
11
Telehealth claims projected to stabilize at 20% of visits by 2025
12
Employer coverage expected to decline to 47% of non-elderly by 2032
13
Medicare per capita spending growth at 5.7% annually 2022-2031
14
Unsubsidized ACA premiums projected to rise 8% in 2025
15
Health spending per capita to reach $15,000by 2031
16
Medicaid spending growth at 5.5% annually through 2031
17
Private insurance market share to fall to 27% of NHE by 2031
18
Employer premium increases forecasted at 7% for 2024
19
Medicare Advantage penetration to hit 60% by 2030
20
Drug price negotiation to save $98.5 billion over 10 years starting 2026
Interpretation
Trends and Projections Interpretation
We appear to be on track for a future where nearly everyone is technically insured, but we'll all be paying a GDP-sized fortune for the privilege of navigating a system increasingly dominated by Medicare Advantage and its narrow-network cousins, while still facing relentless growth in our own out-of-pocket costs.
Reference
Cite This Report
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APA
Gabrielle Fontaine. (2026, February 13). Health Insurance Statistics. Gitnux. https://gitnux.org/health-insurance-statistics
MLA
Gabrielle Fontaine. "Health Insurance Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/health-insurance-statistics.
Chicago
Gabrielle Fontaine. 2026. "Health Insurance Statistics." Gitnux. https://gitnux.org/health-insurance-statistics.
Sources & references
34 datasets cited across this report