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Health Insurance Lien Calculator (2026)

How much will Blue Cross Blue Shield, Medicare, Aetna, Cigna, or your other health insurance take from your personal injury settlement? Calculate your real take-home after liens.

Calculate Your Net After Lien

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$
Check EOB statements — what insurer actually paid, not billed.
33% pre-suit / 40% post-filing typical.
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How Health Insurance Lien Reduction Works

When your health insurance pays for accident-related care, they typically have a subrogation right — a legal claim to be repaid from your settlement. But three legal doctrines reduce what they actually collect:

  1. Common Fund Doctrine (Attorney Fee Share): If your attorney secured the settlement, the lien must contribute its share of attorney fees and costs. A 33% fee on a $100K settlement reduces a $20K lien to ~$13.4K before any further negotiation.
  2. Made-Whole Doctrine: If the settlement doesn\'t fully compensate your damages (most don\'t — settlements are compromises), some states reduce or eliminate the lien. Plan language can override this; ERISA self-funded plans often disclaim made-whole.
  3. Negotiated Reduction: Most insurers will accept 50-70% of their reduced lien rather than litigate. Hospitals are even more flexible (often 30-50% of original).

Insurer-Specific Lien Rules

Insurer Type Made-Whole Typical Reduction
BCBS Private Erisa Depends ~30%
Medicare Federal Statutory No ~20%
Medicaid State Statutory Limited ~35%
Aetna Private Erisa Depends ~25%
Cigna Private Erisa Depends ~30%
UHC Private Erisa Depends ~28%
Kaiser Hmo Limited ~35%
Humana Private Medicare Advantage Depends ~28%

Detailed Notes Per Insurance Carrier

Blue Cross Blue Shield (BCBS)
Most BCBS plans are ERISA-governed (employer-provided) → federal preemption applies. Plan language controls. Self-funded BCBS plans have stronger lien rights than fully insured plans.
Medicare
Mandatory reduction formula: lien ÷ (1 + procurement ratio). For settlements under $5,000 of Medicare-paid expenses, fixed 25% rule applies. Cannot ignore — failing to satisfy = double damages liability.
Medicaid
After Arkansas Department of Health v. Ahlborn (US Supreme Court 2006), Medicaid liens can only attach to the portion of settlement allocated to past medical expenses, not to general damages or future medical. Use "Ahlborn allocation" in negotiation.
Aetna
Often uses Rawlings Co. as third-party recovery vendor. Aggressive on tracking auto accident claims. Plan language varies — request the SPD (summary plan document) to identify subrogation clause specifics.
Cigna
Uses Optum (UnitedHealth subsidiary) as recovery vendor for many plans. Documentation requests are aggressive. Made-whole arguments succeed when plan language is silent on the doctrine.
UnitedHealthcare
In-house Optum recovery handles most subrogation. Will pursue settlements aggressively, including via litigation. ERISA preemption arguments are routinely deployed.
Kaiser Permanente
HMO model — Kaiser provides the medical care directly, then claims lien on settlement. Generally more flexible on negotiation than ERISA plans. State HMO laws often soften lien rights.
Humana
Humana Medicare Advantage plans assert federal Medicare-style rights (Ross v. Humana case). Commercial plans follow ERISA. Identify which type to determine negotiation leverage.

Frequently Asked Questions