Illinois Surrogate Decision Maker Lookup

Who can make medical and money decisions for an adult in Illinois who cannot decide: an agent, a guardian, or Illinois's default surrogate order. Runs in your browser; nothing is stored.

Illinois law checked against official sources on October 26, 2026.

Everything you enter stays in your browser. Nothing is sent, saved, or added to the page address. No names are asked for.

What needs deciding?
Can the person understand this decision and make it, with help if needed?
Which of these exist? (tick all that apply)

Who has authority in Illinois

  1. With no agent and no guardian, this state's default surrogate law lets a family member or other listed person make health-care decisions, in the order below.
  2. If nobody is available or the family disagrees, a court can appoint a guardian. That is slower and costs more than documents signed in advance.

Illinois's default surrogate order

  1. Guardian of the person
  2. Spouse
  3. Any adult son or daughter
  4. Either parent
  5. Any adult brother or sister
  6. Any adult grandchild
  7. A close friend who gives the attending physician an affidavit (Must present an affidavit showing regular contact and familiarity)
  8. Guardian of the estate
  9. Temporary custodian appointed under the Juvenile Court Act (Only if the court order grants this authority)
What it covers
Surrogates make medical treatment decisions for a patient who lacks decisional capacity. Forgoing life-sustaining treatment is allowed only if the patient has a qualifying condition; other decisions go under Section 20(b-5).
If more than one person is in the same group
Surrogates at the same level try for consensus. If they disagree, a majority of those available in that category controls unless the minority starts guardianship proceedings.
If nobody on the list is available
No one is required to seek a guardian; anyone challenging the surrogate may start guardianship proceedings.
Who decides the person cannot decide
The attending physician determines decisional capacity.
Limits
  • A close friend must present an affidavit to the attending physician showing regular contact and familiarity with the patient.
  • For patients without a qualifying condition, decisions follow Section 20(b-5).
  • Since P.A. 104-820 the facility must give the surrogate written information on the incapacity finding and the surrogate's rights, including the right to the medical records.

Source: 755 ILCS 40/25 · Checked October 26, 2026

Know someone who could use this? Share this free tool:

Share: