ABIM Internal Medicine Certification Examination

ABIM administers this examination for initial certification in Internal Medicine. The blueprint describes an assessment of the knowledge, diagnostic reasoning, and clinical judgment expected of an internist across the discipline. It is distinct from ABIM maintenance assessments and subspecialty certification examinations.

Passing the examination is one requirement for certification—not the entire pathway. ABIM also requires applicable medical education, qualifying training, clinical competence, licensure, and procedural requirements.

ABIM describes an examination lasting approximately 10 hours, divided into four sessions.

The January 2026 blueprint says approximately 35 questions are new and do not count toward the score. Most questions use patient scenarios; some may include photographs, radiographs, electrocardiograms, heart or lung sound recordings, or other clinical media. ABIM says the pass-fail decision is based on performance across the examination and unanswered questions are scored as incorrect.

The January 2026 CERT blueprint gives approximate percentages for a typical examination; actual content may vary by administration.

Questions may also integrate critical care, prevention, clinical epidemiology, ethics, nutrition, palliative and end-of-life care, adolescent and occupational medicine, patient safety, substance abuse, and clinically important health-equity content.

The blueprint also describes physician tasks: making diagnoses; ordering and interpreting tests; recommending treatment or other care; assessing risk and prognosis; applying epidemiologic principles; and using pathophysiology and basic science in patient care.

ABIM’s current policy page identifies medical education, qualifying graduate medical education, clinical competence, licensure, procedural requirements, and a passing examination as parts of initial certification.

For the standard training route, the policy specifies 36 calendar months of qualifying U.S. or Canadian graduate medical education, including at least 30 clinical months. The policy also describes requirements for clinical competence and procedures, with program-director attestation of general procedural competence. These standard-route details should not be assumed to apply identically to every candidate or pathway.

ABIM lists research, combined-training, special-consideration, and pilot pathways, including routes relevant to some internationally trained physicians. International medical graduates should check the current requirements for their particular education, training, credential, and licensure route with ABIM before applying.

Allocate study time using the blueprint

Begin with Cardiovascular Disease at approximately 14%. Give substantial attention to the five 9% categories: Endocrinology, Diabetes, and Metabolism; Gastroenterology; Infectious Disease; Pulmonary Disease; and Rheumatology and Orthopedics. Then work through the 6% categories and the rest of the blueprint. The weights describe typical content, not guaranteed question counts.

Practice the tasks the blueprint names

Use single-best-answer practice to rehearse moving from a clinical presentation to a likely diagnosis, selecting or interpreting a test, choosing a management response, and considering risk or prognosis. Review relevant epidemiology and pathophysiology when they inform the clinical decision.

Rehearse timing and clinical media

Practice timed question blocks and occasionally simulate four sessions of up to 60 questions each. Include interpretation of clinical media such as electrocardiograms, radiographs, photographs, and laboratory results. ABIM says reference ranges and high- or low-result indicators are provided with laboratory results in assessment questions, so practice interpreting results in context.

Review missed questions by the reasoning task involved—diagnosis, test selection or interpretation, management, or risk assessment—not only by disease name. On exam day, answer every question because unanswered items are scored as incorrect.

Use ABIM’s current Internal Medicine registration page for the active examination cycle’s dates, registration window, scheduling instructions, and deadlines; ABIM notes that dates are subject to change. That page also directs candidates to its fee and refund information. Check the current official material before making plans.

Candidates who need testing accommodations should review ABIM’s current registration instructions and linked accommodations information. Candidates with nonstandard training backgrounds should identify the applicable eligibility pathway before applying.

This guide covers initial Internal Medicine certification only. Maintenance assessments and subspecialty certification have separate requirements and materials.