The transition from pediatric to adult diabetes care is the structured handover of a young adult with type 1 or type 2 diabetes from a pediatric endocrinology clinic to an adult endocrinology or primary care setting, typically between ages 18 and 21. The window between 16 and 25 is the highest-risk period in type 1 diabetes — A1C deteriorates, care visits drop off, and a substantial fraction of young adults become “lost in transition.” A planned program that begins around age 14, builds self-care skills, anticipates insurance changes, and includes a warm handoff to a named adult provider significantly improves outcomes.
Why Transition Is a Critical Window
The teens and early twenties are developmentally challenging for any chronic condition, but diabetes is uniquely demanding — daily insulin decisions, glucose monitoring, carbohydrate counting, sick-day management, and constant vigilance for hypoglycemia and ketoacidosis. The same years bring leaving home for college or work, learning to manage one’s own insurance, dating and disclosure decisions, alcohol and substance exposure, irregular schedules, and the developmental drive for autonomy.
- A1C frequently rises between ages 16 and 25, often by 1 to 2 percentage points
- Hospitalizations for diabetic ketoacidosis increase in the emerging adult years
- Care visit attendance drops — some studies show fewer than half of young adults attend the recommended quarterly visits
- Mental health concerns including depression, disordered eating, and diabetes distress peak in this period
- Insurance disruptions are common as young adults move off parental plans, change jobs, or relocate
- “Lost in transition” describes the substantial fraction who disengage from diabetes care entirely between the pediatric exit visit and the first adult visit
The Six Core Elements of a Structured Transition
The Got Transition framework, adapted by the ADA and JDRF joint position statement, organizes transition around six pillars. A pediatric clinic that addresses all six produces better outcomes than ad-hoc transfers.
| Element | What It Means |
|---|---|
| Transition policy | Written clinic policy stating when transition starts, age range for transfer, and what is covered |
| Tracking and monitoring | Registry of teens approaching transition age so none are missed |
| Transition readiness | Periodic assessment of self-care skills using a validated tool (e.g., TRAQ, Got Transition checklist) |
| Transition planning | Action plan addressing skill gaps, choosing an adult provider, insurance planning |
| Transfer of care | Medical summary sent, first adult appointment scheduled, ideally a shared visit |
| Transfer completion | Confirmation that the young adult attended the adult visit and is engaged in care |
Timeline: What to Do When
Spreading the work across several years prevents a chaotic exit. A reasonable schedule:
- Age 12–13: Introduce the concept of transition. The teen starts attending part of the visit alone (without parent in the room for 5 to 10 minutes).
- Age 14: Formal transition planning begins. First readiness assessment. Self-care skill checklist started.
- Age 15–16: Teen orders refills, schedules appointments, and contacts the clinic with questions. Driving and diabetes discussion. Mental health screen.
- Age 17: Insurance and college planning. Discussion of alcohol, sexual health, and disclosure. Identify potential adult providers.
- Age 18: Legal adult — discuss HIPAA, healthcare proxy, FERPA. Adult provider chosen. Begin records transfer.
- Age 18–21: Actual transfer of care. Ideally a shared visit with pediatric and adult providers.
- Age 22–25: Post-transfer follow-up. Pediatric clinic confirms the young adult is attending adult care.
Self-Care Skills to Build Before Transfer
The Got Transition readiness assessment covers most of these. A young adult ready for adult care should be able to:
- State their diagnosis, insulin regimen, and other medications by name and dose
- Order insulin and supply refills
- Schedule and attend appointments without parental prompting
- Calculate insulin-to-carb ratios and correction doses
- Interpret CGM trend arrows and respond appropriately
- Recognize and treat hypoglycemia, including using glucagon
- Manage a sick day — check ketones, hydrate, adjust insulin
- Know when to call the clinic versus go to the ER
- Explain their A1C levels and personal target
- Understand their insurance — copays, deductible, pharmacy benefit, prior authorization
- Disclose diabetes appropriately to employers, roommates, or partners
Insurance and Practical Logistics
Clinical readiness without insurance continuity still leads to care gaps. Practical issues to plan for:
- ACA dependent coverage: A young adult can stay on a parent’s plan until age 26, regardless of marital, student, or residential status. This is the single most important continuity tool.
- Out-of-state college: Check whether the parental plan covers care in the college’s state. If not, the marketplace may offer a separate plan.
- Job-based insurance: When starting work, enroll within the open enrollment window. Diabetes is not a pre-existing condition disqualifier under the ACA.
- Marketplace plans: If neither parental nor employer coverage applies, healthcare.gov offers tiered plans. Verify formulary coverage for insulin and supplies before enrolling.
- Medicaid: Income-based programs vary by state. Some states extend Medicaid to young adults aging out of CHIP.
- Pharmacy benefit: Insulin and CGM/pump supplies may be covered differently. Manufacturer savings programs (Lilly, Novo Nordisk, Sanofi) can bridge gaps.
Choosing an Adult Provider
Pediatric and adult endocrinology differ in style. Pediatric clinics are family-centered, with longer visits and active outreach. Adult clinics expect the patient to drive their own care. Choosing the right adult provider eases the cultural transition.
- Ask the pediatric team for recommendations — most have trusted adult colleagues
- Confirm the adult provider sees type 1 diabetes regularly (some focus on type 2 or thyroid)
- Verify insurance acceptance and copay before booking
- Ask whether the clinic supports pumps and CGMs you currently use
- Check for after-hours coverage and how messages are handled
- If the adult clinic has a young-adult or transition program, prefer that
The Shared Care Visit
A shared care visit — where the pediatric provider and adult provider see the young adult together once before the transfer — is one of the highest-yield transition interventions. The pediatric provider hands off context (diagnosis story, what’s worked, family dynamics), the adult provider sets expectations for the new clinic, and the young adult feels less abandoned. Logistically it requires effort to coordinate, but when feasible it dramatically lowers no-show rates at the first adult visit.
Mental Health and Diabetes Distress
Depression, anxiety, eating disorders (including insulin omission for weight loss, sometimes called diabulimia), and diabetes distress are common in emerging adults with type 1 diabetes. Transition planning should include:
- Annual screening with a validated tool (PHQ-9, GAD-7, PAID)
- Identifying a mental health provider who understands chronic illness
- Open discussion of substance use, alcohol, and how to manage glucose around social drinking
- Awareness of insulin omission as a weight control behavior — a serious warning sign
- Discussion of symptoms and warning signs the young adult should not ignore
Special Considerations for Type 2 Diabetes in Young Adults
Type 2 diabetes diagnosed in childhood or adolescence is increasingly common and behaves differently from adult-onset T2D — beta-cell decline is faster, complications develop sooner, and medication options are fewer. Transition for these young adults focuses on:
- Continuity of metformin and other agents through the transfer
- Earlier complication screening (eye, kidney, foot)
- Cardiovascular risk factor management — lipids, blood pressure
- Lifestyle support — see related guides on treatment options and diet and nutrition
- Reproductive planning and contraception, particularly for young women
Common Pitfalls
- Transferring without sending records — the adult clinic starts blind
- No specific adult provider chosen — the young adult drifts
- Skipping the readiness assessment — gaps in self-care skills are not addressed
- Ignoring insurance — coverage lapses on the parent’s plan or at a job change
- Abrupt transfer at age 18 with no warning — the young adult feels rejected
- Not following up after transfer — no one knows if the young adult attended
The Bottom Line
The transition from pediatric to adult diabetes care is the highest-risk care moment in type 1 diabetes — A1C rises, visits drop, and many young adults become “lost in transition” between ages 16 and 25. The best evidence supports a structured program that begins around age 14, follows the six-element framework (policy, tracking, readiness, planning, transfer, completion), addresses both clinical self-care skills and practical issues like insurance, and includes a shared care visit when possible. The ACA dependent-coverage rule to age 26 is the single most important continuity tool. Choosing an adult endocrinologist who regularly sees type 1 diabetes, transferring records before the first visit, and confirming attendance after the handover all measurably reduce the chance of disengagement. Talk to your pediatric endocrinology team about their transition program well before age 18.
