The NBCMI CMI-Korean oral exam is a computer-based test of 45 to 60 minutes: 30 minutes for 12 consecutive mini-scenarios and 10 minutes for 2 sight translation passages. It is scored on six weighted content areas, with interpreting skills and medical terminology heaviest at 25% each, and the Korean passing score is 70%. You can only take it after passing the written exam and earning the Hub-CMI credential, and you then have two years to pass the oral.
What the oral exam covers
The CMI-Korean oral exam is computer-based, runs 45 to 60 minutes, and combines 12 consecutive mini-scenarios with 2 sight translation passages. Six official content areas are weighted, with interpreting skills and medical terminology the heaviest.
NBCMI delivers its exams by computer, either in person at a professional testing center or remotely through a live online proctoring platform if you meet the technical requirements. The oral exam is 45 to 60 minutes long. You get 30 minutes for 12 mini-scenarios, which are consecutive interpreting tasks, and 10 minutes for 2 sight translation passages. Your spoken renditions are recorded.
The handbook publishes these weights for the oral exam's content. Note that these are content weights across the whole exam, not separate question counts for each task type.
Three skills are explicitly not tested: simultaneous interpreting, written translation, and sight translation into English. NBCMI explains that a job analysis found interpreters perform these tasks too rarely to justify testing them, so time spent drilling them for this exam is time misplaced.
Sight translation runs from written English into spoken Korean. The two task allocations total 40 minutes within the published 45–60-minute overall duration; the handbook does not break down every remaining minute.
| Official oral exam content area | Weight |
|---|---|
| Interpreting knowledge and skills | 25% |
| Medical terminology in working languages | 25% |
| Mastery of linguistic knowledge of English | 15% |
| Mastery of linguistic knowledge of the other language (Korean) | 15% |
| Cultural competence | 10% |
| Medical specialties in working languages | 10% |
Sources checked: NBCMI Candidate Handbook — Written and oral exam content outlines; taking the exams; results and retesting; NBCMI Programs - CMI — CMI credential overview, FAQ, passing scores, California workers' compensation note
Prerequisites and the path to the oral exam
You register with NBCMI and document Korean-track prerequisites, then pass the written exam to earn the Hub-CMI. From that point you have two years to pass the Korean oral exam; the Hub-CMI does not renew.
Registration costs $40 and is non-refundable. It gives you one year to submit documentation and complete the program; if you need longer, a $40 re-registration fee continues it.
For the Korean track, NBCMI requires all of the following before you can sit the written exam.
Once the National Board approves your application, you can schedule the written exam. It is a 51-question, multiple-choice test offered only in English, you have up to 75 minutes, and it costs $190. You must schedule it within six months of approval, and you must pass it before the oral exam can be scheduled.
Passing the written exam grants the Hub-CMI, a preliminary credential. Because a CMI oral exam exists in Korean, you then have up to two years to pass the oral; after that window the Hub-CMI expires with no renewal option. NBCMI recommends taking the oral within six months of the written exam, but that is a recommendation, not a deadline.
- Proof you are at least 18, such as a driver's license, passport, or other government-issued ID.
- Proof of at least a high school education: a diploma, GED, or any higher-education degree.
- A recent professional photo on your NBCMI profile.
- Medical interpreter training that cannot be waived for anyone: a certificate from an accepted 40-hour-plus course, or at least 3 credit hours of medical interpreting coursework.
- English proficiency: a degree from an institution of higher education in the US or another English-language country, a high school diploma from such a country or an American school abroad, or an approved test score (examples listed by NBCMI include IELTS 7.0 and TOEFL iBT 90+; NBCMI notes the accepted list is subject to change).
- Korean proficiency: a degree or high school education from a country where Korean is spoken, at least 24 semester credit hours of Korean, or an ACTFL OPI or OPIc at Advanced Mid.
Sources checked: NBCMI Prerequisites - Korean — Registration, Korean CMI prerequisites, Hub-CMI window; NBCMI Candidate Handbook — Written and oral exam content outlines; taking the exams; results and retesting; NBCMI Programs - CMI — CMI credential overview, FAQ, passing scores, California workers' compensation note
How the oral exam is scored
Raters apply five published criteria, accuracy first among them. The Korean passing score is 70%, results arrive by email after your session, and failed attempts follow a structured retake policy.
NBCMI evaluates oral exams on five criteria. Accuracy means conveying the meaning without omissions, additions, summarizing, or editorializing, and keeping the original register. Listening and information retention means following instructions and recalling the key information long enough to render it. Grammar covers correct syntax and avoiding false cognates. Interpreting style covers consistent enunciation, intonation, pronunciation, and a courteous professional demeanor. The fifth criterion is knowledge of medical terminology and specialties.
For Korean, as for Cantonese, Russian, and Spanish, the passing score is 70%. NBCMI set passing scores through a standard-setting study in which subject matter experts rated every item; you are measured against a fixed standard, not a curve or a quota.
The current handbook says you will receive a pass or fail notification, your score, and general feedback by email roughly 8 to 10 weeks after your test session. NBCMI's test-delivery pages state 6 to 8 weeks; the handbook figure is the safer planning basis, but treat either as an estimate.
If you do not pass, you may retest after a three-month waiting period, with the same fees and application steps. After three retakes, you are limited to one attempt per calendar year, and you may not exceed five attempts in total.
Sources checked: NBCMI Candidate Handbook — Written and oral exam content outlines; taking the exams; results and retesting; NBCMI Programs - CMI — CMI credential overview, FAQ, passing scores, California workers' compensation note; NBCMI Test from Home — Online proctoring, practice test, permitted materials, fees and retakes
Permitted materials and exam-day rules
The oral exam allows one paper bilingual dictionary plus blank paper and two pens or pencils for notes. Nothing is allowed for the written exam. Remote testing depends on your equipment and carries retake-cost risk.
For the oral exam you may bring one non-electronic, paper bilingual dictionary, and you may take notes on blank paper with two pens or pencils. All note paper goes to the proctor at the end for shredding, or is destroyed under proctor supervision if you test remotely. The written exam, by contrast, permits no materials at all. Practicing with a physical dictionary is therefore sensible preparation, since electronic dictionaries are not allowed.
You may not take breaks, stand up, or move around during the exam, and you cannot leave the testing area until you finish and submit. If anything goes wrong during testing, you must document the problem with the proctor before completing your session, and then email the National Board within 24 hours.
Remote delivery runs through a live online proctoring service. NBCMI asks you to run a systems check first; if your computer does not pass, you test at a center instead. Be aware that by choosing online proctoring you accept responsibility for network, technical, or environment problems, including the cost of any retake they force.
NBCMI provides a free practice test, but is explicit that it only helps you learn the platform's navigation, such as how and when to record renditions and request repetitions. It does not prepare you for actual medical interpreting, and its scenarios may differ from the real exam.
Sources checked: NBCMI Candidate Handbook — Written and oral exam content outlines; taking the exams; results and retesting; NBCMI Test from Home — Online proctoring, practice test, permitted materials, fees and retakes; NBCMI Test at a Site - Oral Exam — Scheduling, practice test, results, fees and retakes
Practice example: auditing a rendition for complete meaning
Accuracy and completeness are part of the published evaluation criteria. A short meaning audit on paper trains you to notice substitutions and omissions before they cost you points.
Accuracy is the first published rubric criterion, and the professional standards NBCMI lists for the profession say the same thing in practice terms: render every message completely, without adding, omitting, or substituting anything, even content that seems redundant or unimportant. The exercise below works only with English meaning units so that every premise can be checked; it is not a measure of your Korean output.
Practice example
Original meaning audit: the source says, "My appointment is still on Wednesday, but the time changed from ten in the morning to two in the afternoon." Assume an English back-translation accurately reflects a candidate’s Korean rendition: "The appointment moved to Wednesday at two." Identify the changes and give a faithful English meaning statement.
Show answer
The rendition incorrectly suggests the day changed, drops the old 10 a.m. time, omits afternoon from the new time and drops first-person ownership. A faithful statement is: "My appointment remains on Wednesday; its time changed from ten in the morning to two in the afternoon."
The source distinguishes an unchanged day from a changed time. Preserving only Wednesday and two loses that relationship and the a.m./p.m. distinction. This illustrates the handbook’s accuracy criterion and NCIHC’s completeness principle. It does not evaluate Korean pronunciation, grammar or register, and it does not predict an exam score.
Sources checked: NBCMI Candidate Handbook — Written and oral exam content outlines; taking the exams; results and retesting; NCIHC National Standards of Practice (2005) — Accuracy, confidentiality, and impartiality standards
Turning the official weights into a study plan
NBCMI publishes study tips and the content outlines in its handbook, and it names a Candidate Preparation Document for the oral format. Beyond that, how you divide practice time is your decision; the weights are the most defensible guide.
Start with the current Candidate Handbook’s content outlines and study tips. NBCMI also refers candidates to an oral Candidate Preparation Document; ask your programme advisor for the current document and testing instructions.
As optional advice, the published weights suggest where time pays off. Interpreting skills and medical terminology together account for half the exam, so complete, accurate consecutive rendition of clinical dialogue is the core skill to rehearse aloud. Linguistic mastery of English and Korean adds another 30%, and cultural competence and medical specialties cover the rest. Adjust the split toward whatever your own recordings show is weakest; no published source ties study hours to results.
Rehearse under the real conditions you now know: a recorded rendition, a strict task clock, and a paper dictionary you must physically search. Skip drills for simultaneous interpreting, written translation, and sight translation into English, since the handbook confirms none of them are tested.
Your practical next steps: confirm the current Korean prerequisites and fees on the NBCMI prerequisites page, submit documentation early because application review takes time, and after passing the written exam, plan to take and pass the oral well inside your two-year Hub-CMI window.
Sources checked: NBCMI Programs - CMI — CMI credential overview, FAQ, passing scores, California workers' compensation note; NBCMI Candidate Handbook — Written and oral exam content outlines; taking the exams; results and retesting; NBCMI Prerequisites - Korean — Registration, Korean CMI prerequisites, Hub-CMI window; NBCMI Test at a Site - Oral Exam — Scheduling, practice test, results, fees and retakes
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