ABIM ACHD
Adult Congenital Heart Disease Certification Examination
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ExploreAbout this exam
The Adult Congenital Heart Disease Certification Examination is an ABIM subspecialty examination for physicians who want to demonstrate the knowledge, clinical judgment, and skills required for independent practice in the care of adults with congenital heart disease. ABIM describes its certification examinations as assessments of the knowledge, clinical judgment, and skills essential for high-quality care, and certification as evidence that a physician is ready for independent practice.
The examination is administered on odd-numbered years only. In 2027 it is scheduled for Oct. 13, with registration from Dec. 1, 2026 through Jun. 15, 2027, and late registration Jun. 16 through Jun. 28, 2027 at a non-refundable late fee; accommodation testing is Oct. 25-29, 2027. Candidates face approximately 10 hours of testing divided into four sessions of up to 60 single-best-answer multiple-choice questions each, with 100 total minutes of break time split across three breaks.
Content is defined by ABIM's ACHD blueprint, and most questions are clinical vignettes. ABIM's preparation resources include the blueprint, an exam tutorial, exam policies, and the laboratory reference ranges used in questions.
This page offers independent study material for the exam. It is not affiliated with, endorsed by, or sponsored by ABIM.
What you'll study
About ABIM ACHD preparation
How long is the ACHD exam, and how many questions does it contain?
ABIM lists the examination as lasting approximately 10 hours, divided into four sessions. Each session contains up to 60 multiple-choice questions, so a full form holds up to about 240 items. Each session is allotted up to two hours, and an optional tutorial of up to 30 minutes plus instructions precede testing.
What question format should I expect?
All questions are multiple choice with a single best answer. ABIM states that the overwhelming majority use a clinical stem, a patient-based scenario testing higher-order decision-making, while a small number address specific knowledge points without a stem. Some questions require interpreting electrocardiograms, radiographs, or photomicrographs.
How often is the exam offered, and when is registration?
It is administered on odd-numbered years only, so there is no administration in even-numbered years. For 2027 the exam date is Oct. 13; registration runs Dec. 1, 2026 through Jun. 15, 2027, and late registration runs Jun. 16 through Jun. 28, 2027 with a non-refundable late fee. All deadlines are 11:59 p.m. ET.
Are breaks built into the exam day?
Yes. You have 100 total minutes of break time that can be divided between three breaks during the exam. Any break time taken after a test session is deducted from that total. An optional post-exam survey of up to 10 minutes is also listed in the exam day schedule.
What happens if I leave questions unanswered?
Unanswered questions are scored as incorrect, so ABIM advises answering every question. The pass-fail decision is based on performance across the entire examination rather than on any single session, and the minimum passing score reflects an absolute standard independent of how any group of candidates performs. No numeric passing score is published on the exam page.
When will I receive my results?
Final results are released within three months of the last date of the exam in that area. You receive an email notification with instructions for accessing your score report through the Physician Portal. Score reports are maintained for two years, and questions about results must be submitted in writing within six months of the release date.
Can I request a rescore, and what does it cost?
You may request a rescore for a fee of $250, submitting a written request within six months of the results' release date. The request should include your name, ABIM ID, the examination to be rescored, and a check payable to the American Board of Internal Medicine. Rescore results are mailed within eight weeks of receipt.
I am ABP-certified in pediatric cardiology. Is anything different for me?
Yes. Physicians certified in Pediatric Cardiology by the American Board of Pediatrics who want ABIM certification in Adult Congenital Heart Disease must contact ABIM to apply for an ABIM candidate number before registering. Plan ahead so the candidate number is issued in time to register before the deadline.
How should I sequence my preparation?
Start with ABIM's ACHD blueprint, which lists the content categories and target percentages, then allocate study time in proportion. Review the exam tutorial and the laboratory reference ranges so formatting holds no surprises. Because most items are clinical vignettes, practice applying physiology and imaging reasoning to patient scenarios rather than memorizing isolated facts.
What are common failure modes on exams like this?
Recurring risks include leaving items blank, since unanswered questions score as incorrect; mismanaging the 100 minutes of break time; and misreading long vignettes that combine imaging, catheterization, and medication data. ABIM also notes that occasional items are excluded from scoring when new evidence removes a single best answer, so answer according to current clinical practice.