Michigan CMH Services Turning 18: What Changes for Adults with Disabilities

The Service System Doesn't Pause While Legal Authority Transfers

Michigan's Community Mental Health (CMH) system serves as the primary gateway to adult disability services — residential supports, Home Help, respite care, behavioral health treatment, supported employment, and day programs. For families whose children have been receiving CMH-coordinated services through childhood, the 18th birthday introduces two simultaneous disruptions: the legal authority to consent to and direct those services transfers from parent to adult child, and the eligibility determination shifts from children's criteria to the adult service system.

Neither transition happens automatically, and the gap between the two can leave families locked out of services their child was receiving the day before.

What Changes at 18

Consent authority shifts completely. Once your child turns 18, CMH can no longer take direction from you or share information with you without the adult individual's explicit written consent or other legal authority. If your adult child is receiving psychiatric medications, behavioral supports, or residential services, the CMH case manager is legally required to communicate directly with them — not you — about treatment plans, service changes, and program placement.

This catches families off guard because the practical relationship with CMH staff doesn't feel different the day after the birthday. The case manager still knows you, still takes your calls, and may continue involving you informally. But without documented legal authority — a signed HIPAA release, a Patient Advocate Designation, or a court-ordered guardianship — that informal access can be cut off at any point, especially when staff changes or a new provider enters the picture.

Eligibility is re-evaluated under adult standards. Children who received CMH services through the children's mental health or developmental disability programs must be re-assessed for adult eligibility. Michigan's adult CMH eligibility is primarily tied to Medicaid status and the presence of a serious mental illness or developmental disability as defined by the Mental Health Code.

For most young adults with established developmental disabilities, continued eligibility is straightforward — the disability didn't disappear at 18. But the paperwork still needs to happen. CMH offices vary in how proactively they initiate the transition. Some begin person-centered planning meetings at 16 or 17; others wait until the family contacts them post-18.

The Guardianship Question in CMH Context

CMH clinicians are often the professionals parents consult first about guardianship, and their guidance carries real weight. Most CMH case managers and supervisors are trained to present guardianship alternatives before recommending court involvement, consistent with MDHHS's supported decision-making promotion.

What CMH can do:

• Conduct a person-centered planning meeting to identify the young adult's support needs across all life domains
• Help families assess whether the individual can execute voluntary legal documents (PAD, DPOA) with appropriate accommodations
• Provide clinical documentation supporting (or not supporting) a guardianship petition — including the multidisciplinary evaluation required for the DD track (Form PC 659)
• Connect families with legal aid resources for families who can't afford a private attorney

What CMH cannot do:

• File a guardianship petition on the family's behalf
• Serve as guardian or conservator (CMH agencies are barred from serving as guardian of individuals they provide services to, because it creates an inherent conflict of interest)
• Override the individual's expressed preferences about their own services, even if the family disagrees

Avoiding the Gap

The worst-case scenario is reaching the 18th birthday with no legal authority documents in place and no active CMH transition plan. At that point, if your adult child doesn't proactively sign releases or consent forms, CMH must treat them as a self-directing adult — which may mean declining to discuss their care with you.

Start 8 months before 18:

1. Contact your child's CMH case manager to schedule a person-centered planning meeting focused on the age-18 transition
2. Ask specifically whether the team recommends guardianship, alternatives, or some combination — and what clinical documentation they can provide
3. Execute a Patient Advocate Designation (two qualified witnesses, no family members) and a Durable Financial Power of Attorney while your child is still willing and able to sign, if they have the capacity to do so
4. Complete a HIPAA authorization form at CMH so that your access to your child's treatment information continues uninterrupted past 18

If your child lacks capacity to sign voluntary documents, start the guardianship petition process early enough that the court hearing occurs before or shortly after the 18th birthday. The DD track has no filing fee, but the PC 659 evaluation must be completed within 12 months of filing — and coordinating that evaluation with CMH or an independent clinician takes time.

For a complete timeline that maps CMH coordination, legal document execution, and guardianship filing deadlines against the 18th birthday, the Michigan Adult Guardianship & Alternatives Guide covers each step with county-specific procedures.

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