Can You Be a Truck Driver with Diabetes, Sleep Apnea, or High BP? (2026 Rules)
Coach Ray audio brief for this topic
Loading audio...
TL;DR
Diabetes treated with insulin is allowed under a federal rule (49 CFR 391.46) if you meet its requirements. Sleep apnea and high blood pressure have no fixed test numbers in the regulations, so FMCSA gives medical examiners guidance instead. The examiner decides each case. This is general information, not medical advice.
Warning:
If a school is not on the federal registry, you cannot get your license. All schools listed on CDL Schools USA are verified against the 2025 FMCSA database.
The DOT Physical and Health Conditions
"I want to drive, but I'm worried my health will stop me."
Many drivers worry about the DOT physical when they have diabetes, sleep apnea or high blood pressure. Rumors on trucking forums make it worse: "If you take insulin, you're banned." "If you have sleep apnea, they disqualify you." "If your blood pressure is high, go home."
The federal rules are more specific than the rumors. This guide sticks to what 49 CFR 391.41 to 391.49 and the FMCSA Medical Examiner's Handbook (2024) say. The medical examiner decides each case, and only your own doctor can advise you about your health.
The short version
Insulin-treated diabetes has its own federal rule, 49 CFR 391.46. Sleep apnea and blood pressure do not have fixed test numbers in the regulations. For those, FMCSA gives examiners guidance, and the handbook says that guidance does not have the force of law.
1. Diabetes Treated With Insulin (49 CFR 391.46)
Under 49 CFR 391.41(b)(3), a driver with diabetes currently treated with insulin is not qualified unless the driver meets 49 CFR 391.46. That section was published in 2018 (83 FR 47520). A driver who meets it can be certified.
What 391.46 requires
- Your treating clinician (the health care professional who manages and prescribes insulin for your diabetes) evaluates you before the exam and completes the Insulin-Treated Diabetes Mellitus Assessment Form, MCSA-5870, signed and dated.
- The exam must be at least once a year, and no later than 45 days after the clinician signs the form.
- The medical examiner decides whether you are maintaining a stable insulin regimen and properly controlling your diabetes. If you are not, the rule says you are not physically qualified.
- You keep blood glucose records from an electronic glucometer that stores readings with the date and time and can be downloaded, and you give the printout or the meter to your treating clinician.
How long the certificate can be
A certificate of up to 12 months needs at least the preceding 3 months of electronic glucose records. Without them, the certificate can be for no more than 3 months (391.46(c)(2)).
Two other rules in 391.46
- Severe diabetic eye disease: a driver with severe non-proliferative or proliferative diabetic retinopathy is not physically qualified on a permanent basis.
- Severe low blood sugar: after a severe hypoglycemic episode (one that needs help from others or causes loss of consciousness, seizure or coma), a certified driver may not operate a commercial vehicle until the treating clinician has addressed the cause, confirmed a stable regimen and completed a new MCSA-5870.
Diabetes that is not treated with insulin
Section 391.46 covers diabetes treated with insulin. If you have another form of diabetes, ask your doctor and your examiner how it will be handled. We do not give numbers for it, because the regulations do not set any.
Live CDL Jobs
View All Jobs2. Sleep Apnea: Guidance, Not a Rule
"I'm a big guy. Will they make me use a mask?"
There is no federal rule about sleep apnea in 49 CFR Part 391. It is looked at under the respiratory standard, 391.41(b)(5). The FMCSA Medical Examiner's Handbook (section 4.8.3.6) says the federal rules do not set screening requirements, waiting periods, maximum certification periods, specific diagnostic procedures or treatment, specific test results, or requirements for judging treatment compliance for sleep apnea.
What the handbook tells examiners to consider
- Your answers to the sleep questions on the health history form, and risk factors the examiner sees at the exam.
- The risk factors it lists: a history of a small airway, loud snoring, witnessed pauses in breathing, sleepiness during the day, high BMI, large neck size, high blood pressure, cardiovascular disease, and a history of stroke, diabetes or other conditions.
- If an examiner sees multiple risk factors for moderate to severe sleep apnea, the examiner should consider recommending a sleep study if you have not had one.
- For a diagnosis of moderate to severe sleep apnea: whether treatment has been shown to be adequate, effective, safe and stable.
No federal number for CPAP use
The handbook sets no required hours of use per night and no required share of nights. Because the examiner has to judge whether treatment is working, ask your examiner what records they want to see, and ask your own doctor about your treatment.
3. High Blood Pressure
"I have 'white coat syndrome.' My blood pressure goes up when I see doctors."
The rule, 49 CFR 391.41(b)(6), says no current clinical diagnosis of high blood pressure likely to interfere with safe driving. It does not set numbers. The numbers below are FMCSA guidance to examiners (Medical Examiner's Handbook section 4.6.2, and an FMCSA FAQ last updated in 2014). They are advisory, and the examiner may certify for less than the maximum when closer monitoring is needed.
| BP Reading | Certificate the guidance points to | Notes |
|---|---|---|
| 140/90 or less | Up to 2 years | The FAQ says a driver being treated for high blood pressure should have at least annual certification |
| 140 to 159 over 90 to 99 (Stage 1) | 1 year | Rechecks should be 140/90 or less. If a later reading is above 140/90 but under 160/100, a one-time 3 month certificate |
| 160 to 179 over 100 to 109 (Stage 2) | One-time 3 months | If the reading comes down to 140/90 or less and treatment is well tolerated, up to 1 year |
| 180/110 or higher (Stage 3) | Not qualified until 140/90 or less | After that, 6 months at a time |
Blood pressure medicine
The rule does not name any blood pressure medicine. The handbook notes that most blood pressure medicines have side effects such as sleepiness or fainting, and tells examiners to weigh them for each person. Tell your examiner what you take and why you take it. Ask your own doctor whether your treatment is right for you.
FMCSA's blood pressure guidance for examiners is summarized in our DOT Medical Exam Prep and Disqualifier Checklist.
Preparation Beats Panic
The medical examiner follows the federal standards in 49 CFR 391.41 and decides each case. Arriving with the right papers and the right questions helps the exam go smoothly. It does not change the standards.
DOT Medical Exam Prep and Disqualifier Checklist
A 19 page PDF built from 49 CFR 391.41 to 391.49 and FMCSA's Medical Examiner's Handbook. General information, not medical advice. The examiner decides.
- What to bring, and how to check your examiner on the National Registry
- The exam step by step and the 13 standards in plain words
- What a 1-year or 3-month certificate means, and what to do if you are not certified
Related Articles:
📧 Weekly CDL News Digest
Get the latest CDL regulations and industry updates delivered to your inbox every week.
- FMCSA regulatory updates
- Training requirement changes
- Industry hiring trends
Share this article
Related Articles
The 2026 Directory of Re-Entry Trucking Programs
In every major city, there are non-profits, government agencies, and grant programs specifically designed to pay for your CDL training and place you in a job. Here is the official directory.
Your First 30 Days After Release: The CDL Re-Entry Roadmap That Actually Works (2026)
From probation office to CDL class in 30 days. This step-by-step plan connects re-entry programs, MVR cleanup, and second-chance hiring to get you earning $55k+ by Week 8.
What to Say When Calling CDL Re-Entry Programs: Word-for-Word Phone Script (2026)
Nervous about calling workforce agencies for CDL help? This proven phone script gets you enrolled in re-entry programs faster. Copy-paste templates for Philadelphia Works, ARIZONA@WORK, and more.
Can I Get a CDL If I Dropped Out of High School? (GED Rules)
Do I need a diploma to drive a truck? Short answer: No. The government doesn't care about your grades. Here's the truth about education requirements in trucking.