CCHI and NBCMI offer national healthcare-interpreting credentials. As an interpreter, start with the credential your prospective employer accepts and the exams available for your language. Then compare prerequisites, testing locations, and total cost.
The choice extends beyond CHI versus CMI. CCHI also offers CoreCHI-Performance, and its transition notice announces the end of new standalone CoreCHI awards in 2027. Older comparisons can send you toward the wrong path.
If you are still choosing training, read how to become a medical interpreter first. Completion of a training course and certification by an examining organization are separate steps.
The 30-second answer
The organizations’ current CCHI eligibility and NBCMI program overview distinguish these routes:
| Factor | CCHI | NBCMI |
|---|---|---|
| Bilingual performance credential | CHI: Arabic, Mandarin, Spanish | CMI: Cantonese, Korean, Mandarin, Russian, Spanish, Vietnamese |
| Route beyond those bilingual exams | CoreCHI-P uses an English-to-English performance exam | Hub-CMI is available regardless of target language |
| Knowledge examination | CoreCHI exam | Written exam leading to Hub-CMI |
| Important distinction | CoreCHI-P does not directly test interpreting between English and your other language | Hub-CMI does not include the bilingual CMI oral exam |
Do not treat these credentials as interchangeable. Ask the hiring organization which exact credential it accepts for your language and assignment.
For a first attempt, budget $533 for CCHI CHI or CoreCHI-P, $530 for NBCMI CMI, or $230 for NBCMI Hub-CMI, before training and other expenses. These are standard initial application and exam totals from CCHI’s fees and NBCMI’s program overview, checked October 1, 2026.
Use our certification-path finder to compare routes for your language and specialty. It narrows the options; the certifier decides eligibility, and your employer decides which credential it accepts.
What each credential is
CCHI - Certification Commission for Healthcare Interpreters
CHI combines CCHI’s knowledge examination with a bilingual performance examination in an available language. CoreCHI-P combines the knowledge examination with the English-to-English ETOE performance examination.
CCHI’s transition notice says it will stop awarding standalone CoreCHI certification on January 1, 2027. The CoreCHI knowledge exam remains part of its certification process.
Under that transition notice, candidates who pass the knowledge exam on or after January 1, 2027 must pass ETOE within 12 months to earn CoreCHI-P. For CoreCHI credentials awarded or renewed in 2025 or 2026, CCHI allows two years from the award date. Earlier holders should check their expiration date and the December 31, 2028 final transition limit with CCHI.
NBCMI - National Board of Certification for Medical Interpreters
NBCMI offers Hub-CMI after its written exam and CMI after the required bilingual oral exam. It offers CMI in six languages and Hub-CMI regardless of target language.
If NBCMI offers CMI in your language, its overview gives you two years after Hub-CMI to complete the oral exam. It says Hub-CMI in those languages expires without a renewal option. Check the separate rules for other languages.
Language coverage - this alone may decide it for you
Arabic has a CCHI bilingual CHI exam. Cantonese, Korean, Russian, and Vietnamese have NBCMI bilingual CMI exams. Both organizations offer a bilingual exam in Spanish and Mandarin, according to their linked program pages.
That comparison concerns these organizations’ bilingual tests. It does not mean interpreters in other languages lack a credentialing route: investigate CoreCHI-P and Hub-CMI, then ask whether your employer accepts them.
An English-to-English performance test and a bilingual interpreting test measure different things. Be precise when describing your credential on an application. Our broader certification guide separates these paths.
CCHI and NBCMI certification costs
Standard fees checked October 1, 2026 against CCHI’s schedule and NBCMI’s overview. The totals below assume a new application and one attempt at each required exam:
| Standard initial fees | CCHI CHI or CoreCHI-P | NBCMI CMI |
|---|---|---|
| Application or registration plus knowledge/written exam | $231 | $40 registration + $190 written |
| Performance exam | $302 for CHI or ETOE | $300 for the CMI oral exam |
| Sum of those fees | $533 | $530 |
The figures come from CCHI’s fee schedule and NBCMI’s fee update. The $3 difference between these two routes should carry less weight than employer acceptance, language coverage, and exam access.
CCHI certification cost: CHI and CoreCHI-P
CCHI charges $231 initially: a $40 application fee plus $191 for the CoreCHI knowledge exam. Add $302 for your CHI bilingual performance exam or ETOE performance exam. Either complete route totals $533 in standard initial fees.
CCHI’s $231 first step covers application and knowledge testing. It does not cover the performance exam.
CCHI’s 2026 #AddCCHI offer lists a $300 route for eligible holders of another accepted, active performance-based interpreter or translator certification. It waives the application fee and charges $150 per exam. Hub-CMI holders and training-course certificate holders do not qualify on that basis. CCHI lists payment deadlines of December 31, 2026 and reserves the right to end the offer. Ask CCHI to confirm eligibility before paying; this is not the standard new-applicant price.
NBCMI certification cost: CMI and Hub-CMI
NBCMI lists $40 registration and $190 for the written exam, totaling $230 for the initial Hub-CMI route. Add $300 for the bilingual oral exam to reach $530 for CMI. Older comparisons using $175 written and $275 oral fees predate NBCMI’s January 2025 increase.
Hub-CMI does not include an oral performance assessment. If NBCMI offers CMI in your language, budget for that next exam and its two-year completion deadline. NBCMI’s overview also lists a separate $100 Hub-CMI application for people who have already passed the written exam; that is a different situation from the new-applicant route above.
Expenses outside the initial exam total
Get quotes for any prerequisite training and proficiency tests you need. Add travel or accommodation for test-center exams, then reserve money for a possible retake. CCHI’s eligibility page says CHI and ETOE performance exams take place at physical test centers in the United States and Canada.
CCHI lists $191 for a knowledge-exam retake and $302 for each performance-exam administration. Check cancellation and rescheduling rules before booking; an initial total is not a cap on what you may spend.
Renewal needs its own budget. CCHI lists $300 for the first credential’s renewal. NBCMI CMI renewal costs $300 every five years and requires 30 approved continuing-education hours. Hub-CMI renewal costs $300 every four years for languages without a CMI exam; Hub-CMI holders in CMI languages cannot renew that interim credential after its two-year term. Confirm the requirements for your exact credential before buying renewal courses.
Watch the units: continuing-education hours and CEUs are not interchangeable labels. Check the provider’s approval and how the certifier counts the activity before buying a course.
Exam content - what you’re tested on
Written exam content
Both organizations assess professional knowledge as well as healthcare terminology. Read the current candidate handbook’s content outline instead of choosing an exam based on a claim that one is the easy ethics test and the other is the vocabulary test.
A medical background may help with some concepts. A language-teaching background may help with others. Neither removes the need to study interpreter ethics, role boundaries, and terminology in context.
Oral exam content
Use the exam guide for your exact credential. Bilingual CHI, English-to-English ETOE, and bilingual CMI are distinct examinations; a practice pack for one may leave gaps for another.
Practice the interpreting modes and timing in that guide. Check whether it includes sight translation, consecutive or simultaneous tasks, and what materials you may use. Do not infer permission from how you work on a normal shift.
Our consecutive vs simultaneous guide can help you understand the modes before you plan practice sessions.
Eligibility - can you even sit for it?
Check your documents against CCHI’s eligibility requirements and NBCMI’s prerequisites before paying:
| Requirement | CCHI | NBCMI |
|---|---|---|
| Age | At least 18 | At least 18, with proof of age |
| General education | U.S. high school diploma, GED, or foreign equivalent | High school diploma, GED, or a higher-education degree |
| Healthcare-interpreter training | At least 40 hours of healthcare-interpreter training | Approved medical-interpreter course of at least 40 hours, or at least 3 college credit hours of medical-interpreting coursework |
| Languages | Evidence of English and primary-language proficiency | Accepted evidence of oral proficiency in English and the target language |
NBCMI also asks for a profile photo. Its Hub-CMI prerequisites for other languages describe the evidence for that route. Do not assume an unrelated language course or work experience alone satisfies interpreter-training requirements.
Keep your completion certificate or transcript, education record, and proficiency evidence together. CCHI requires an English translation alongside documents issued in another language. Its training requirement does not mean it endorses your training provider; CCHI says it does not accredit, pre-approve, or endorse beginner-level programs.
CCHI’s language-proficiency rules vary by language and credential. Do not assume that living in a country automatically exempts you from documentation or testing.
NBCMI also lists several kinds of acceptable proficiency evidence. Check its requirements for your target language. A missing diploma does not prove that only one organization is open to you.
TIP
Send the certifier a specific eligibility question before you pay: your language, intended credential, training record, and the proficiency documents you have. Keep its reply with your application records.
Accreditation - does it matter?
Accreditation applies to a particular certification program, not to every credential an organization offers. If a job requires an accredited credential, check the named program in the current accreditor directory and confirm it with the employer.
Do not assume accreditation guarantees higher pay, or that an employer accepts every credential from the same organization. Your hiring requirement may be more specific than a comparison table.
Which agencies prefer which?
Requirements vary by job and contract. A recruiter accepting one credential for a general OPI role does not establish the rules for a different hospital client or a specialist assignment.
Send the recruiter the exact credential name and language. Ask whether it satisfies the posting, whether the client requires a bilingual performance test, and whether a separate agency assessment remains necessary.
Choose your next step
Work through these questions in order:
- Which exact credential does your target employer or client accept?
- Which bilingual or language-independent route is available to you?
- Can you document eligibility for that route?
- Can you reach the required test location and meet the deadlines?
- What will training, exams, possible retakes, and renewal cost you?
If both routes fit, use the candidate materials to choose a realistic preparation plan. You do not need an invented universal ranking to make a good decision.
Open the certification-path finder for a short list based on your language and work setting. Use this comparison for the fee breakdown and document checklist, and the broader certification guide if you are comparing medical and court work.
Study resources for each
For CCHI
Start with CCHI’s preparation materials and the handbook for your intended credential. Use the published outline to identify gaps before buying a course.
Our interpreter code of ethics guide provides practical situations to discuss with a trainer. It supplements the certifier’s materials; it does not predict exam questions.
For vocabulary gaps, use our medical terminology flashcards and quizzes. You can study word parts or complete terms, check their sources, and retry missed entries. These exercises check vocabulary recall, not certification readiness.
For NBCMI
Read the current NBCMI candidate handbook and official practice information. Check the handbook version when you register.
Use our medical terminology guide to organize additional practice. Study unfamiliar concepts in context rather than collecting isolated equivalents.
After certification - what changes
A credential may qualify you for a job that requires it. It does not guarantee a pay increase, a contract, or more accommodating callers. Ask about the rate and the remaining hiring steps in the actual offer.
Keep records of continuing education and renewal dates from the start. Medical certification also does not certify you for court work; that has a separate credentialing path.
Our medical interpreter salary guide explains how employment type and paid time affect the amount you take home.
The bottom line
Choose the credential your intended work accepts, then verify the route and current rules with the certifier. Language coverage, documentation, and exam access can decide the question before a small fee difference does.
If you plan to start with CCHI’s knowledge exam, read the announced transition before scheduling. If you plan Hub-CMI in an available CMI language, include the oral-exam deadline in your budget and calendar.
