New Mexico Living Will: How to Document Your Treatment Preferences

A living will in New Mexico isn't a standalone legal form — it's the treatment-instruction component of your advance health care directive under the Uniform Health-Care Decisions Act (NMSA 1978 § 24-7A-1 et seq.). But the distinction matters less than what goes into it: specific, enforceable instructions for scenarios where you can't speak for yourself.

The biggest mistake people make is keeping their instructions vague. "I don't want to be kept alive on machines" sounds clear until a treatment team needs to decide whether to continue antibiotics for a pneumonia infection in a dementia patient. Here's how to write instructions that actually work.

What a Living Will Controls

Your living will documents your preferences for medical treatment in specific scenarios:

Terminal condition. An incurable, irreversible illness where death will occur in a relatively short time regardless of treatment. You direct whether you want life-sustaining measures continued, limited, or withdrawn.

Permanent unconsciousness. A persistent vegetative state with no reasonable medical expectation of recovery. This is where most people want treatment reduced to comfort measures, but you need to state that explicitly.

End-stage condition. An irreversible condition with continuous, severe decline where treatment offers no reasonable benefit. Progressive diseases like end-stage COPD or advanced heart failure fall here.

Decisions You Need to Address

Life-Sustaining Treatment

Specify whether you want CPR, mechanical ventilation, dialysis, and similar interventions in each qualifying scenario. "Comfort measures only" is the clearest directive for most people who want pain management without aggressive treatment.

Artificial Nutrition and Hydration

New Mexico law treats tube feeding and IV hydration as a separate decision category. Document this independently from your general treatment preferences. Many people authorize comfort hydration (moistening the mouth) while declining long-term tube feeding.

Pain Management

State whether you want maximum pain relief even if it might hasten death. This is legally distinct from medical aid in dying — administering palliative medication to manage suffering is standard clinical practice, not euthanasia.

Organ and Tissue Donation

Include your donation preferences directly in your living will. You can authorize donation of specific organs, all organs, or your whole body for research. Back this up by registering with Donate Life New Mexico through the MVD.

Dementia Provisions

Standard terminal-illness language may not cover progressive cognitive decline for years. Write specific instructions: at what stage of dementia do you want treatment reduced to comfort care? Do you want antibiotics for infections? Hospitalization for falls? These granular decisions prevent your agent from guessing.

How to Make It Legally Valid

Under § 24-7A-2, a living will is valid with just your written signature. No witnesses or notary required by statute.

In practice, you should add both. Hospital risk departments and out-of-state facilities regularly question unwitnessed documents. The standard that ensures universal acceptance:

1. Your written signature
2. Two disinterested adult witnesses (cannot be your healthcare agent or employees of your treating facility)
3. Notary acknowledgment

If you're physically unable to sign, another person can sign at your direction, but two witnesses are then legally required.

Common Mistakes That Weaken Your Living Will

Too vague. "No heroic measures" isn't a medical term. Clinicians need specific instructions about specific interventions.

No healthcare agent paired with it. A living will without a named agent creates a gap: when your treatment team needs a real-time decision that your written instructions don't cover, there's no one authorized to make it. Always execute both components together.

Not updated after major life changes. A living will written before a serious diagnosis may not address the specific progression of your actual condition. Review and update after any new diagnosis, surgery, or change in your health baseline.

Stored somewhere inaccessible. A living will locked in a safe deposit box at 2 a.m. during a hospital admission is useless. Your healthcare agent, primary physician, and the local hospital system should all have copies.

Living Will vs. Healthcare Power of Attorney

These are two halves of the same document in New Mexico. The living will states your treatment preferences. The healthcare power of attorney names someone to enforce those preferences and make decisions your written instructions don't cover.

You need both. Instructions without an agent can't respond to unexpected clinical situations. An agent without instructions is making gut-level decisions during the most stressful moments of their life.

The New Mexico Advance Directive & Living Will Kit guides you through documenting treatment preferences for every qualifying scenario, pairs them with a healthcare agent designation, and includes the execution checklist that meets both statutory validity and clinical compliance standards.

See more New Mexico guides →