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Informed Consent

A patient's agreement to treatment after being told the risks and alternatives - and a signed form is evidence that the conversation happened, not proof that it was adequate.

Informational only - this is not legal advice. These definitions explain general legal vocabulary in plain English. They are not advice about your situation, reading them creates no attorney-client relationship, and the law differs from state to state and changes over time. For advice you can rely on, speak to a lawyer licensed in your state.

Looking for a lawyer rather than a definition? Skip to the state-by-state list of Medical Malpractice law firms.

What it means

Informed consent is the principle that a competent adult decides what is done to their own body, and that the decision has to be an informed one. The duty is on the clinician to disclose what a patient would need in order to choose - typically the nature of the proposed treatment, its material risks, the reasonable alternatives including doing nothing, and the likely consequences of each.

States differ on how the adequacy of disclosure is measured. Some ask what a reasonable practitioner would have disclosed, which usually requires expert testimony about professional custom. Others ask what a reasonable patient would have wanted to know, which shifts the focus from professional practice to the patient's decision. That choice materially changes what has to be proved.

A failure of informed consent is a distinct claim from a failure of skill. Treatment can be performed impeccably and still give rise to liability if a material risk was never disclosed and the patient would have declined had they known. Consent obtained through a signed form is evidence but not a conclusion - what matters is what was actually communicated and understood.

Where this comes from

Informed consent is governed by state law - by court decisions and, in many states, by statute - and there is no national standard. States divide between a professional-practice standard and a reasonable-patient standard of disclosure, and they also differ on the emergency and therapeutic exceptions and on who may consent for someone who cannot.

When people hire a lawyer for this

The question worth putting to a lawyer is not whether a form was signed but whether a particular risk was ever disclosed, and whether the patient would have chosen differently had it been. Medical claims also carry filing deadlines that are frequently shorter than for ordinary injuries and are often paired with a requirement to obtain a supporting expert opinion before suit, so the timetable is set well before anyone reaches the merits.

Worried about the cost? A lawyer can be hired for one part of a case only (limited-scope representation), may be paid from what a claim recovers (contingency fee), or may be free through a pro bono program or legal aid; a court can also waive its own filing fees.

Find Medical Malpractice law firms in your state

Choose your state to see Medical Malpractice law firms in the city where we list the most; your city may be under “other cities”, A to Z.

Alabama (Birmingham)
+1 other city
- Montgomery
Alaska (Anchorage)
Arizona (Chandler)
+6 other cities
Arkansas (Little Rock)
California (Los Angeles)
+18 other cities
- Anaheim
- Chula Vista
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- Fremont
- Irvine
- Long Beach
- Modesto
- Riverside
- Sacramento
- San Bernardino
- Santa Ana
- Stockton
- and 6 more with fewer listed firms
Colorado (Aurora)
+2 other cities
- Colorado Springs
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Connecticut (Bridgeport)
Delaware (Wilmington)
District of Columbia (Washington)
Florida (Tampa)
+5 other cities
Georgia (Atlanta)
Hawaii (Honolulu)
Idaho (Boise)
Illinois (Chicago)
Indiana (Fort Wayne)
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Iowa (Des Moines)
Kansas (Kansas City)
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Kentucky (Lexington)
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Louisiana (Baton Rouge)
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Maine (Portland)
Maryland (Baltimore)
Massachusetts (Boston)
Michigan (Detroit)
Minnesota (Minneapolis)
+1 other city
- Saint Paul
Mississippi (Jackson)
Missouri (St. Louis)
+1 other city
- Kansas City
Montana (Billings)
Nebraska (Lincoln)
+1 other city
- Omaha
Nevada (Henderson)
+3 other cities
New Hampshire (Manchester)
New Jersey (Newark)
+1 other city
- Jersey City
New Mexico (Albuquerque)
New York (New York City)
+2 other cities
- Buffalo
- Rochester
North Carolina (Charlotte)
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North Dakota (Fargo)
Ohio (Columbus)
+3 other cities
Oklahoma (Tulsa)
+1 other city
- Oklahoma City
Oregon (Portland)
Pennsylvania (Philadelphia)
+1 other city
- Pittsburgh
Rhode Island (Providence)
South Carolina (Columbia)
South Dakota (Sioux Falls)
Tennessee (Memphis)
+1 other city
- Nashville
Texas (Austin)
+12 other cities
Utah (Salt Lake City)
Vermont (Burlington)
Virginia (Richmond)
+3 other cities
Washington (Seattle)
+2 other cities
- Spokane
- Tacoma
West Virginia (Charleston)
Wisconsin (Madison)
+1 other city
- Milwaukee
Wyoming (Cheyenne)

Related terms

Entries on the same subject:

Other entries in the same area of law, each written from the same primary sources.

Advance Directive and Living WillDocuments recording medical treatment wishes, and naming who decides, if a person becomes unable to decide for themselves.
Civil Commitment (Involuntary Psychiatric Hospitalization)The state-law process by which a person can be held and treated in a psychiatric facility against their will - the emergency hold, the court hearing, the standard of dangerousness, and the constitutional limits on all three.
COBRA Continuation CoverageThe federal right to stay on an employer's group health plan after leaving the job, losing hours, divorcing, or a covered employee's death - at the full premium, for a limited period, if elected in time.
Elder Abuse and Adult Protective ServicesWhat the law counts as abuse, neglect or exploitation of an older or dependent adult, who must report it, what Adult Protective Services can and cannot do, and the civil and criminal remedies that follow.
EMTALA (Emergency Medical Treatment and Labor Act)The federal law that requires a hospital emergency department to screen and stabilize anyone who comes through the door, regardless of insurance or ability to pay, before it may transfer or discharge them.
Fair Hearing (Public Benefits)The hearing you are entitled to before benefits such as Medicaid or SNAP are cut off or denied - a constitutional right, not an agency courtesy.
False Claims Act and Health Care Whistleblowers (Qui Tam)The federal statute under which false billing to Medicare or Medicaid carries treble damages and per-claim penalties, and the qui tam procedure that lets a private person sue in the government's name and share the recovery.
Health Plan Claim Denial and AppealThe structured process for challenging a refusal to cover treatment - internal appeal first, then in most cases an independent external review.
HIPAA and Your Medical RecordsThe federal privacy rules for health information - including a right to get a copy of your own records, which is narrower and more practical than the privacy rule people usually mean.
Hospital Financial Assistance and Medical DebtThe federal rules that make a nonprofit hospital publish a financial assistance policy, limit what it may charge eligible patients, and restrict how it collects - and what a patient with a medical bill can do with them.
Life Insurance Claim DenialThe common reasons life insurers deny or delay death benefits, how the rules differ for employer group policies under ERISA, and what beneficiaries can do about disputes over who gets paid.
Medicaid Estate RecoveryThe federal requirement that a state recover the cost of long-term care Medicaid paid for from the estate of the person who received it after they die - the reason the family home is at stake, and the exemptions and hardship rules that limit it.
Medicare AppealsThe five-level process for challenging a Medicare denial - of a claim, a service, a hospital discharge, or a nursing-home stay - with a different deadline at each level and a fast track when the care is about to stop.
Mental Health ParityThe federal requirement that a health plan covering mental-health or substance-use treatment cover it on terms no more restrictive than its medical and surgical coverage - in dollars, in visit limits, and in the prior-authorization and network rules that are harder to see.
Nursing Home Residents' RightsThe federal bill of rights every Medicare- or Medicaid-certified nursing home must honor - dignity, choice, freedom from restraints and abuse, notice before transfer or discharge - and the inspection and complaint system that enforces it.
Psychotherapist-Patient PrivilegeThe rule that keeps what a patient tells a therapist out of court - who it covers, who holds it, how it is waived, and the duty-to-warn and child-abuse exceptions that override it.
Refusing Medical TreatmentThe right of a competent adult to refuse any treatment, including one that keeps them alive; what happens when the patient cannot decide; and the limits the law places on it.
Social Security Disability Appeal (SSDI and SSI)The four-step process for challenging a denied disability claim - and most claims are denied at the first step.
Stark Law and the Anti-Kickback StatuteThe two federal laws that govern financial relationships in health care - the strict-liability ban on physician self-referral and the criminal ban on paying for referrals - and why nearly every practice arrangement has to fit an exception or a safe harbor.
SubrogationThe right of an insurer or health plan that paid your bills to be repaid out of your settlement - the reason a recovery is often smaller than it looks.
Supplemental Security Income (SSI)The federal needs-based benefit for people who are aged, blind or disabled and have little income or savings: how it differs from Social Security disability, what counts against it, and how to appeal.
Surprise Medical Billing (No Surprises Act)The federal protection, since 2022, against a bill from an out-of-network provider the patient did not choose - the emergency room, the anesthesiologist at an in-network hospital, the air ambulance - and the good-faith estimate an uninsured patient can hold a provider to.
Surrogate Decision-Maker (Default Surrogate Laws)Who makes medical decisions for a patient who cannot and who never named anyone - the ranked list most state laws supply, the standard the surrogate must apply, and what a surrogate cannot do.
Veterans Disability CompensationThe tax-free monthly VA benefit for disabilities connected to military service: what service connection means, how ratings work, and the three ways to challenge a VA decision.

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Part of the LawyerLand plain-English legal glossary. Definitions are written from primary sources - statutes and court rules - and each entry states the authority it rests on, or says plainly when the doctrine is state law with no national rule.

If you cannot afford a lawyer, civil legal aid programs provide free help with many of these problems: civil legal aid programs by state.

Related free reference tools: statute of limitations for a personal-injury claim, by state, quoted from each state's official text - part of LawyerLand's legal reference tools.