The Five Most Common Mistakes in DIY Advance Directives

The temptation to handle advance directives with an online form is understandable. The forms are cheap (often free). They’re fast. They feel manageable. And compared to not having one at all, even a flawed form seems better than nothing.

The problem is that advance directives only get used in critical moments — typically when someone is unconscious, terminally ill, or facing end-of-life decisions. If the document is flawed, the flaws are discovered at the worst possible moment, by family members who don’t know what to do about it.

Here are the five most common mistakes I see in DIY advance directives, based on my experience reviewing them for clients in Michigan.

Mistake #1: Using an Out-of-State Form

This is by far the most common mistake. Michigan has specific statutory requirements for its patient advocate designation, and forms designed for other states often don’t comply. The Five Wishes document is an example — it’s marketed as a universal form, but it doesn’t cleanly meet Michigan’s specific requirements without additional language.

When a hospital or doctor encounters a non-conforming form, they have to make a judgment call about whether it carries weight. Some will honor it as a general expression of wishes. Others won’t rely on it for specific legal authority. The person who signed it isn’t there to clarify.

A Michigan-specific form prepared under Michigan law carries the full weight of state statute. An out-of-state form is a best-guess interpretation.

Mistake #2: Improper Witnessing

Michigan requires two witnesses for a patient advocate designation. Both must be at least 18 years old. Neither witness can be the named patient advocate. Critically, the witnesses cannot be people who would inherit from you under a will or by intestacy, cannot be healthcare providers currently caring for you, and cannot be your spouse.

DIY documents frequently violate these witnessing rules. A common scenario: an adult child takes the form to their parent at the hospital, and the parent signs it with a nurse and the adult child as witnesses. Both are disqualified under Michigan law. The document is arguably void.

A properly prepared document includes clear instructions on witnessing and often uses witnesses provided by the attorney’s office — eliminating the risk of disqualified witnesses entirely.

Mistake #3: Ambiguous Treatment Preferences

Many DIY forms present simplified choice-architecture about treatment preferences — check boxes for “yes” or “no” on life-sustaining treatment, with little context about what those choices actually mean in clinical practice.

The reality of medical decision-making is more nuanced. Do you want CPR? Yes, if you’re 45 and had a sudden cardiac event with good recovery potential. No, if you’re 92 with advanced dementia and a terminal cancer diagnosis. A checkbox doesn’t capture this nuance.

A better document specifies treatment preferences in context — “In the event I’m in a terminal condition with no reasonable expectation of recovery, I do not want… [specific interventions]” — giving medical teams the conditional framework they need to apply the document correctly.

Mistake #4: Outdated Documents

DIY documents often get signed and then forgotten. Twenty years later, circumstances have changed — the named patient advocate has died or is no longer close to the signer, specific treatment preferences may no longer match current wishes, or the legal landscape has evolved.

An out-of-date advance directive creates its own problems. If a hospital sees a 20-year-old document that names a now-deceased person as patient advocate, they can’t use it. They’re back to the default next-of-kin rules.

An attorney-drafted document typically comes with periodic reminders to review and update it. DIY documents don’t.

Mistake #5: No Integration With the Rest of the Estate Plan

An advance directive doesn’t exist in isolation. It’s part of a broader estate planning picture that includes a will or trust, financial power of attorney, beneficiary designations, and asset titling. These documents should all reference each other and point in the same direction.

DIY directives are usually created in a vacuum. The person signs the advance directive form online, puts it in a drawer, and never coordinates it with their other planning documents. Common problems this creates:

The patient advocate named in the advance directive is a different person than the financial power of attorney agent. Now one person has medical authority and a different person has financial authority, with no coordination between them. Medical bills need to be paid — who decides? The existing will or trust doesn’t mention the advance directive, leaving ambiguity about whether the patient’s end-of-life wishes were considered during estate planning. Specific conditions in the advance directive (like religious directives about certain treatments) aren’t reflected in other documents.

The Cost-Benefit Reality

A properly drafted Michigan-compliant advance directive from an estate planning attorney typically costs $200-$500 as a standalone document, or significantly less when included in a broader estate planning package. The document is prepared correctly, witnessed correctly, coordinated with other planning, and reviewed periodically.

Compare that to the cost of a flawed DIY directive: when it’s needed, and it doesn’t work correctly, the family is left without the protection it was supposed to provide. The emotional cost of that failure is enormous — and could have been avoided for a few hundred dollars.

When DIY Is Reasonable

There’s an argument for DIY advance directives in limited scenarios: if you have no attorney access, if you’re facing an imminent medical crisis with no time for proper drafting, or if the alternative is truly having no document at all. In these cases, a DIY form is better than nothing.

But for anyone with the time and resources to work with an attorney, the investment in a properly drafted living will michigan document is small relative to the stakes involved. This isn’t the kind of document to optimize for price.

The Final Word

Advance directives work when they’re correctly prepared, properly witnessed, kept current, integrated with other planning, and stored somewhere accessible when needed. DIY documents often fail on one or more of these dimensions, and the failure is discovered at the worst possible time.

If you don’t have one, get one. But if you’re serious about making sure it actually works when the time comes, spend the modest additional money to have it prepared properly. The emotional protection for your family is worth far more than the cost.