
Four Documents, One Plan
What is the difference between a living will and a medical power of attorney in Colorado? A living will is a written instruction: it tells doctors to withhold or withdraw life-sustaining procedures if you have a terminal condition or are in a persistent vegetative state and cannot decide for yourself. A medical durable power of attorney appoints a person, an agent who can make any medical decision for you whenever you lack capacity, in any situation. The living will speaks for itself in narrow circumstances; the agent speaks for you in all of them. Most complete Colorado plans include both.
Estate planning conversations usually start with property: the house, the accounts, who gets what. The documents people end up needing soonest are usually the medical ones. A skiing accident on a Tuesday, a stroke at 58, a diagnosis that changes the next five years. Colorado law provides a set of tools for exactly these moments, and they only work if they exist before the moment arrives.
Colorado recognizes four main advance directives, each doing a different job. This walks through all four, who needs which, and what happens when none of them exist (the answer involves a statute, a meeting of your relatives, and less control than you would want).
The Living Will: Instructions for the Worst Case
Colorado's living will, formally a "declaration as to medical treatment," comes from the Colorado Medical Treatment Decision Act:
"Any adult with decisional capacity may execute a declaration directing that life-sustaining procedures be withheld or withdrawn if, at some future time, he or she has a terminal condition or is in a persistent vegetative state, and lacks decisional capacity to accept or reject medical or surgical treatment." (C.R.S. § 15-18-104)
Read the conditions carefully, because they are the most misunderstood part of the document. A living will speaks only when you have a terminal condition or are in a persistent vegetative state, and you cannot speak for yourself. It does not govern a routine surgery, a temporary coma, or a treatable crisis. Within its scope, it can state your wishes on life-sustaining procedures and, separately, on artificial nutrition and hydration; Colorado lets you decide those two questions independently.
Execution rules matter. The declaration must be signed and witnessed by two adults, and Colorado disqualifies certain witnesses: your attending physician or that physician's employees, employees of the facility where you are a patient, anyone who may inherit from you or has a claim against your estate, and fellow patients. The point of the witness rules is to keep the people with conflicts of interest out of the room. Statute text is at leg.colorado.gov.

The Medical Durable Power of Attorney: Your Agent for Everything Else
The living will's limitation, those narrow trigger conditions, is exactly what the medical durable power of attorney solves. Under C.R.S. § 15-14-506, an MDPOA names an agent with authority to make medical treatment decisions for you whenever you lack decisional capacity, in any medical situation, terminal or not. Consent to surgery, choice among treatment options, selecting facilities, accessing records, and, within the limits you set, decisions about life support.
The agent must follow your known wishes, which is why the best MDPOAs are more than a name: they include guidance, written or spoken, about what matters to you. Choose a primary agent and at least one alternate, and tell them they were chosen. An agent who learns about the role in a hospital hallway starts at a disadvantage.
For a married couple in Castle Rock, a common assumption is that the spouse can simply decide. Without an MDPOA, a spouse has no automatic legal authority to direct your care; Colorado handles that gap with the proxy statute, which is the next section, and the proxy process is slower and messier than a one-page appointment signed in advance.
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No Documents? Colorado's Proxy Statute Takes Over
When a patient lacks capacity and has no MDPOA or guardian, C.R.S. § 15-18.5-103 directs the medical team to notify "interested persons," the spouse, partner, parents, adult children, siblings, grandchildren, and close friends, who are then asked to reach consensus on a proxy decision-maker from among themselves.
Read that again as a planning matter. The legislature's fallback is a meeting of your relatives, convened during a crisis, asked to agree. Families who agree easily do fine. Blended families, estranged siblings, and second spouses with adult stepchildren frequently do not, and disputes can push the decision toward guardianship court. A proxy also has less authority than an agent: notably, a proxy cannot withhold or withdraw artificial nutrition and hydration without an additional medical determination. One signed MDPOA prevents the entire scenario.
The MOST Form and CPR Directives: Orders Providers Follow Directly
The last two tools are physician orders, which makes them different in kind. A MOST form (Medical Orders for Scope of Treatment, C.R.S. Title 15, Article 18.7) is signed by both the patient (or their agent or proxy) and a physician or advanced practice provider, and it converts treatment preferences into standing medical orders: CPR or not, full treatment or comfort-focused care, transfer to hospital or treat in place. It is designed for people with serious illness or frailty, and it travels, honored across hospitals, nursing facilities, and EMS responses. A CPR directive (Article 18.6) is the narrower version, instructing emergency personnel not to attempt resuscitation.
Healthy adults generally do not need a MOST form. Someone in their last years of life, or managing advanced illness, often needs it more than any other document on this page, because paramedics follow orders, and a living will in a desk drawer is not an order.

Building the Set (and Keeping It Current)
A complete Colorado medical plan is usually an MDPOA for every adult, a living will for those with clear end-of-life wishes, and a MOST form when serious illness makes it relevant, alongside the financial power of attorney that handles the non-medical side of an incapacity. Give copies to your agent, your physician, and your hospital system; a directive nobody can find at 2 a.m. fails at its only job. Then revisit the set after the big life changes, divorce especially, since an ex-spouse named as agent is rarely what anyone intends. Flat-fee estate plans make this a package, not a pile of separate bills, and that is how we build them.
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Frequently Asked Questions
What is the difference between a living will and a medical power of attorney in Colorado?
A living will gives instructions that apply only if you have a terminal condition or are in a persistent vegetative state and cannot decide for yourself. A medical durable power of attorney appoints an agent who can make any medical decision whenever you lack capacity. The two work together, and most plans include both.
Who makes medical decisions if I have no advance directives in Colorado?
Under C.R.S. § 15-18.5-103, your "interested persons," spouse, parents, adult children, siblings, and close friends, are convened and asked to agree on a proxy decision-maker from among themselves. If they cannot agree, the dispute can end up in guardianship court. A signed MDPOA avoids the process entirely.
Does a Colorado living will need to be notarized?
No. It must be signed and witnessed by two qualified adults. Colorado disqualifies your attending physician and their employees, facility employees, anyone who stands to inherit from you or has a claim against your estate, and fellow patients from serving as witnesses.
What is a MOST form?
Medical Orders for Scope of Treatment: a physician order, signed by both the patient (or their agent) and a provider, stating decisions on CPR, scope of treatment, and hospitalization. Unlike a living will, it is an order EMS and facilities follow directly. It is intended for people with serious illness or advanced frailty.
Can my spouse automatically make medical decisions for me in Colorado?
No. Colorado gives a spouse no automatic authority to direct your medical care. Without an MDPOA, a spouse participates in the proxy process along with other interested persons. Naming your spouse as agent in an MDPOA is what creates the authority most couples assume already exists.
Can I change or revoke my advance directives?
Yes, at any time while you have decisional capacity. New documents supersede old ones, and directives should be reviewed after marriage, divorce, a new diagnosis, or a move from another state. Out-of-state directives are generally honored in Colorado, but documents matching Colorado's statutes remove doubt at the bedside.
Put the Medical Documents in Place Before They're Needed
Advance directives are the least expensive documents in an estate plan and the ones most often needed first. Tactical Lawyers prepares complete estate plans, MDPOA, living will, and the full document set, for clients across Douglas County and the Denver metro on transparent flat fees explained in writing. Call (720) 499-0000 or request a free consultation; we respond within 24 hours, usually the same day.
This article is for informational purposes only and is not legal advice. Advance directive requirements turn on specific facts; consult a licensed Colorado attorney about your situation.
