Diabetes and DOT Physicals — What CDL Drivers Need to Know

Last updated: June 2025

Can diabetic drivers get a DOT medical card?

Yes. Diabetes does not automatically disqualify a CDL driver. The examiner wants to know that your blood sugar is controlled, you understand your treatment, and you are not at high risk of sudden impairment.

Start with examiners who handle diabetes cases.

Type 1 vs Type 2 — different rules explained

Type 2 drivers who do not use insulin are usually evaluated through medical history, medication review, A1C history, and complications. Insulin-treated drivers need more documentation because hypoglycemia risk matters for safety.

The insulin exemption program — what it is and how to apply

FMCSA no longer uses the old exemption process in the same way. Insulin-treated drivers use the federal insulin-treated diabetes assessment process, completed with their treating clinician and reviewed by the certified examiner.

What documentation to bring

  • Recent A1C results.
  • Treating physician letter or insulin-treated diabetes assessment form.
  • Medication list with dosages.
  • Glucose logs or meter report if available.
  • Eye exam records if you have diabetic eye disease.

What disqualifies a diabetic driver

Severe hypoglycemia, unsafe complications, poor control, or missing insulin documentation can lead to denial until corrected. Review the broader DOT disqualifier guide.

How often do diabetic drivers need to renew their medical card?

Many diabetic drivers receive a 1-year card. Shorter cards are possible if the examiner needs proof that a recent issue is stable.

You can also search clinics by diabetes experience.

Frequently asked questions

Can a diabetic driver get a DOT medical card?+

Yes. Diabetes does not automatically disqualify you if it is stable, documented, and safely managed.

Can insulin-treated drivers pass a DOT physical?+

Yes, but they need proper treating clinician documentation under FMCSA's insulin-treated diabetes process.

What A1C do I need for a DOT physical?+

FMCSA does not set one universal A1C cutoff. The examiner looks at control, complications, hypoglycemia risk, and physician documentation.

What diabetes documents should I bring?+

Bring recent A1C results, medication list, glucose logs if available, and a treating clinician letter or required insulin-treated diabetes form.

Can uncontrolled diabetes disqualify me?+

Yes. Severe hypoglycemia, unsafe complications, or poor control can lead to denial until stabilized.

How long is a DOT card for diabetic drivers?+

Many diabetic drivers receive a 1-year certificate, especially when insulin is used or the examiner wants closer monitoring.

Related guides