South Carolina Adult Health Care Consent Act: The Statutory Hierarchy for Medical Decisions

What § 44-66-30 Does

The Adult Health Care Consent Act is South Carolina's statutory fallback for medical decision-making. It applies when a patient is certified as unable to appreciate the implications of their care and has not signed a Health Care Power of Attorney or other advance directive naming a specific agent.

When those conditions are met, the Act establishes a priority hierarchy of family members who can consent to medical treatment on the patient's behalf — without any court involvement or formal paperwork.

For families of young adults with disabilities, this matters on the 18th birthday. The moment a child turns 18, parents no longer have automatic authority over medical decisions. If the young adult hasn't signed a Health Care Power of Attorney (because they lack capacity to execute one), the AHCCA hierarchy is what keeps the parent in the room.

The Priority Hierarchy

Under § 44-66-30, the following people can consent to medical treatment for an adult who cannot consent for themselves, in this order:

1. A court-appointed guardian, if the decision is within the scope of the guardianship
2. An attorney-in-fact appointed in the patient's durable power of attorney, if the decision is within the scope of the agent's authority
3. The patient's spouse
4. An adult child of the patient
5. A parent of the patient
6. An adult sibling of the patient
7. A grandparent of the patient
8. Any other adult relative by blood or marriage who has a close personal relationship with the patient
9. A person given authority to make health care decisions for the patient by another statutory provision
10. If the people above are unavailable, a person with an established relationship who meets the Act's requirements

For a young adult turning 18 who has no spouse, adult children, or agent under a durable power of attorney, the parent may be the highest-priority available decision-maker, after any guardian with applicable authority. The parent can authorize medical treatment without a court order.

What the AHCCA Covers — and What It Doesn't

The Act is designed to resolve immediate and temporary medical consent issues. Two licensed physicians generally certify that the patient cannot consent, and the highest-priority available family member steps in to authorize treatment.

It covers:

• Consent to or refusal of medical treatments
• Hospital admissions and discharges
• Surgical procedures
• Medication changes

It does not cover:

• Ongoing personal care decisions outside a medical context
• Where the young adult lives
• Financial management
• Educational decisions
• General residential choices unrelated to health care or nursing care

This scope limitation is the critical distinction between the AHCCA and a guardianship. A guardian with broad authority makes all personal decisions. The AHCCA parent makes medical decisions only, and only when a physician has certified the patient cannot consent.

When the AHCCA Is Enough vs. When You Need More

The AHCCA works well for families where the primary concern is medical access. If the young adult has a condition that occasionally requires medical treatment decisions — hospital visits, medication adjustments, surgery consent — and a parent is consistently available to be contacted, the statutory hierarchy handles it.

The AHCCA starts to feel thin when:

• Multiple medical providers need consistent documentation. The AHCCA relies on the required clinical determination of inability to consent. If the physician states that the incapacity is permanent or of extended duration, no further certification is needed for the covered categories unless the agent or attending physician believes capacity may have returned. A Health Care Power of Attorney is a single, durable document that providers keep on file.
• The young adult has complex ongoing medical needs where you want a named agent with documented authority rather than relying on the hierarchy each visit.
• Family conflict exists. If multiple family members at the same priority level disagree about treatment, the AHCCA doesn't provide a clear tiebreaker — the physician may need to seek a court order.

For these situations, a formal Health Care Power of Attorney under § 62-5-504 provides stronger, more predictable authority. But the HCPOA requires the young adult to have capacity to sign it. When capacity is the barrier, the AHCCA hierarchy is what you have.

How the AHCCA Fits Into the Broader Toolkit

The AHCCA handles medical decisions. For the rest of the turning-18 authority questions:

• Educational decisions → Adult Students with Disabilities Educational Rights Consent Act (§ 59-33-330 delegation or § 59-33-340 clinical certification)
• Financial decisions → Durable Financial Power of Attorney (if the young adult can sign) or Representative Payee/Palmetto ABLE (if they can't)
• Comprehensive authority → Limited or full guardianship through probate court (last resort)

The South Carolina Adult Guardianship & Alternatives Guide maps all of these mechanisms onto a single timeline, helping families determine which instruments they need based on their specific situation.

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