- Identity and Issuer at a Glance
- Exam Format and Scoring Rules
- The Three-Module Map and 11 Domains
- Domain Weights Cheat Table
- Fees, Eligibility and Timeline
- What the CH Module Actually Tests
- Pass Rate Facts in Context
- Schedule Domains in a Sensible Order
- Renewal Numbers to Memorize
- Common Traps and Caveats
- FAQ
- The full credential requires three separate modules: FOM, BIO and CH, each 100 questions in 2 hours 30 minutes.
- Each module needs a scaled score of 70 on a 1-99 scale, not 70% correct.
- Questions cannot be skipped or revisited; testing is closed-book with no calculators.
- Application plus three first attempts totals $1,600 at current fee-page rates: $550 plus $350 per module.
Identity and Issuer at a Glance
Dipl.C.H. stands for Diplomate in Chinese Herbology. It is awarded by the National Certification Board for Acupuncture and Herbal Medicine (NCBAHM), formerly the National Certification Commission for Acupuncture and Oriental Medicine (NCCAOM). The issuer name changed effective January 2026, but the Chinese Herbology credential and the Dipl. C.H. designation remain. If you see older study materials, forum posts or school handouts that say NCCAOM, they are describing the same certifying body under its former name.
Two distinctions are worth fixing in your head before anything else. First, certification is separate from state licensure: passing the board examinations does not by itself license you to practice in any state. Second, passing the examinations alone does not award certification. The credential is granted only after all required documents are accepted. For a fuller orientation, see What Is Dipl.C.H.? and Dipl.C.H. Certification.
Exam Format and Scoring Rules
The complete credential is built from three separately scheduled examinations: Foundations of Oriental Medicine (FOM), Biomedicine (BIO) and Chinese Herbology (CH). Each is delivered year-round through Pearson VUE as a computer-adaptive test in English. Each module has 100 multiple-choice questions and a 2-hour-30-minute limit. Added together, that is 300 questions and 7 hours 30 minutes, but never in a single sitting, because each module is its own appointment.
| Item | Fact to memorize |
|---|---|
| Modules | FOM, BIO, CH (all three required) |
| Questions per module | 100 multiple-choice |
| Time per module | 2 hours 30 minutes |
| Aggregate | 300 questions, 7 hours 30 minutes, separate appointments |
| Delivery | Pearson VUE, computer-adaptive, English, year-round |
| Passing standard | Scaled score of 70 on a 1-99 scale |
| Navigation | No skipping, no returning to previous answers |
| Reference materials | Closed-book; personal references and calculators prohibited |
| Scored vs. pretest | Each exam includes scored and unscored pretest questions |
What the scaled score really means
A scaled score of 70 is not the same as getting 70% of questions right. The scale runs from 1 to 99, and the 70 is the passing point on that scale. Do not try to back-calculate a raw-percentage target from it. For more on how candidates misread this, see Dipl.C.H. Passing Score 2026.
Why the no-skip rule changes your strategy
Because you cannot skip a question or go back, the common test-taking tactic of "flag it and return later" is unavailable. You must commit to an answer on each item before moving on. That makes pacing simple but unforgiving: with 100 questions in 150 minutes, you have roughly a minute and a half per item on average, and any time spent agonizing over one formula-ingredient question is permanently gone. Also remember that some questions are unscored pretest items; you cannot tell which, so treat every question as if it counts.
The Three-Module Map and 11 Domains
The 11 formal exam objectives come from the 2026 content outlines, effective September 1, 2026, and are based on the 2024 Job Analysis. They are split across the three modules: Domains 1-3 belong to FOM, Domains 4-7 to BIO, and Domains 8-11 to CH. Each module has its own 100% blueprint, so the percentages inside one module never combine with another module's. Do not normalize them into credential-wide allocations.
FOM: Domains 1-3
Foundations of Oriental Medicine covers the diagnostic and theoretical core.
- Domain 1: Patient Assessment Methods (28%)
- Domain 2: Pathomechanisms and Pattern Differentiation (38%)
- Domain 3: Treatment Planning (34%)
BIO: Domains 4-7
Biomedicine covers the Western clinical-science side of practice.
- Domain 4: Biomedical Sciences (18%)
- Domain 5: Patient Evaluation (26%)
- Domain 6: Analysis and Clinical Decision-making (34%)
- Domain 7: Professional Responsibilities (22%)
CH: Domains 8-11
Chinese Herbology is the module that most directly defines the Dipl.C.H. title.
- Domain 8: Chinese Herbs, Herbal Combinations and Herbal Formulas (22%)
- Domain 9: Safety and Quality Control (24%)
- Domain 10: Treatment Planning and Administration (30%)
- Domain 11: Treatment Evaluation and Modification (24%)
For a deeper walkthrough of each content area, read Dipl.C.H. Exam Domains 2026: Complete Guide to All 11 Content Areas.
Domain Weights Cheat Table
Use this table as your one-page reference. Remember that weights are per module: 38% in FOM is 38% of the 100-question FOM blueprint, not 38% of the whole credential.
| Module | Domain | Weight (within module) |
|---|---|---|
| FOM | 1. Patient Assessment Methods | 28% |
| FOM | 2. Pathomechanisms and Pattern Differentiation | 38% (largest in FOM) |
| FOM | 3. Treatment Planning | 34% |
| BIO | 4. Biomedical Sciences | 18% |
| BIO | 5. Patient Evaluation | 26% |
| BIO | 6. Analysis and Clinical Decision-making | 34% (largest in BIO) |
| BIO | 7. Professional Responsibilities | 22% |
| CH | 8. Chinese Herbs, Herbal Combinations and Herbal Formulas | 22% |
| CH | 9. Safety and Quality Control | 24% |
| CH | 10. Treatment Planning and Administration | 30% (largest in CH) |
| CH | 11. Treatment Evaluation and Modification | 24% |
Key Takeaway
Within the CH module, the herb-and-formula domain is actually the smallest at 22%, while Treatment Planning and Administration is the largest at 30%. Candidates who only memorize herb properties and ignore planning, safety and evaluation are studying for a minority of the exam.
Fees, Eligibility and Timeline
Fee math from the current fee page
The current Applicant Fees page lists $550 for the CH application and $350 per examination module paid to Pearson VUE. For the application plus three first attempts, that is $550 + (3 × $350) = $1,600. This figure excludes education, preparation materials, Clean Needle Technique (CNT) costs and retake fees.
Eligibility routes in brief
- U.S. formal education: a four-year ACAHM-accredited (or candidate) master's or Professional Doctorate program in acupuncture with a Chinese herbal medicine specialization.
- Acupuncture degree plus certificate: an acupuncture master's or Professional Doctorate plus an approved postgraduate Chinese Herbal Certificate.
- Certificate minimums: the January 2024 handbook specifies at least 450 herbal didactic hours, 210 herbal clinical hours and 60 related biomedical clinical-science hours; the current educational-eligibility webpage lists the first two components.
- International applicants: equivalent formal education and a course-by-course transcript evaluation through International Consultants of Delaware.
Documents and deadlines
- An official graduation transcript and an approved CCAHM CNT certificate must be submitted directly by the respective institutions before you are approved to test.
- CNT generally must be completed within six years of the application, with handbook provisions for previously completed CNT and continuous licensure.
- All required examinations must be completed within the four-year application period.
The full eligibility picture is covered in Dipl.C.H. Requirements 2026, and scheduling mechanics in Dipl.C.H. Exam Dates 2026. Because testing is year-round, there are no fixed seasonal windows to chase; your real deadline is the four-year application period.
What the CH Module Actually Tests
The Chinese Herbology module is where the Dipl.C.H. title earns its meaning, and its four domains reward different kinds of knowledge. The appendix herb lists in the content outline are not exhaustive, so treat them as a starting floor rather than a ceiling.
Domain 8: Chinese Herbs, Herbal Combinations and Herbal Formulas (22%)
The recall-heavy domain: individual substances, how they are paired, and how classical and modern formulas are built.
- Herb properties and actions and their clinical use
- Why specific herbs are combined and what the pairing accomplishes
- Formula composition and the role of each component
Domain 9: Safety and Quality Control (24%)
The risk-management domain, and larger than the herb domain itself.
- Contraindications and cautions for herbs and formulas
- Quality, sourcing and handling considerations
- Recognizing and responding to adverse effects
Domain 10: Treatment Planning and Administration (30%)
The largest CH domain: turning a diagnosis into a prescription and managing it responsibly.
- Selecting a formula or strategy that fits the presenting pattern
- Dosing, preparation and administration considerations
- Practice administration tied to herbal care
Domain 11: Treatment Evaluation and Modification (24%)
The follow-up domain: reading response and adjusting.
- Assessing whether a prescription is working
- Modifying formulas as the clinical picture changes
- Deciding when to continue, adjust or stop
Questions are multiple-choice and tend to be applied: expect to weigh a clinical scenario rather than recite a list. For a method-focused plan, see the Dipl.C.H. Study Guide 2026, and to rehearse that scenario style under timed conditions, use the Dipl.C.H. practice tests.
Pass Rate Facts in Context
The official 2025 first-attempt pass rates for Route 1 U.S. formal-education candidates were:
| Module | 2025 first-attempt pass rate |
|---|---|
| FOM | 92.2% |
| BIO | 68.7% |
| CH | 62.3% |
What the numbers do suggest, qualitatively, is that CH was the most demanding module for first-time Route 1 candidates in 2025, and FOM the least. That is a reason to give the herbology module your longest runway, not a prediction for your own result. Further context is in Dipl.C.H. Pass Rate 2026 and How Hard Is the Dipl.C.H. Exam?
Schedule Domains in a Sensible Order
Since the three modules are scheduled independently, you can sequence them. One logical order puts FOM first, because pattern differentiation underpins everything in herbal prescribing, and then CH, which depends directly on it. BIO can slot in wherever your schedule allows. Within the CH module, the weights suggest where to spend hours.
Pattern foundations (FOM Domain 2, 38%)
- Drill pathomechanisms and pattern differentiation, the heaviest FOM block
- This is also the reasoning every CH treatment-planning question assumes
Herbs and formulas (CH Domain 8, 22%)
- Build herb-property and formula-composition recall
- Practice explaining why each herb sits in each formula
Planning and administration (CH Domain 10, 30%)
- Work scenarios from pattern to prescription to dosing and administration
Safety and evaluation (CH Domains 9 and 11, 24% each)
- Rehearse contraindications and quality control, then modification after follow-up
- Finish with full 100-question timed sets with no skipping
The point of this sequence is dependency, not generic technique: herbal prescribing questions assume you can already differentiate the pattern, so FOM Domain 2 pays off twice. Practice under the real constraint of no skipping and no going back, and use the practice question bank to build that habit.
Renewal Numbers to Memorize
Certification does not last forever. Renewal is every four years and requires 60 PDA/CEU points. Within those 60:
- at least 22 accepted core-subject points,
- at least 2 Safety points,
- at least 2 Ethics points, and
- at least 4 CPR points.
Up to 30 points may come from approved Professional Enhancement activities, or all 60 may be core. The current active-renewal fee is $350 per certification, though the older October 2025 Recertification Handbook still lists $325. Check the current renewal page before paying.
Key Takeaway
The Safety, Ethics and CPR points count inside the 60, not on top of it. Plan your four-year cycle so you are not scrambling for the small mandatory categories at the end.
Common Traps and Caveats
- Confusing scaled score with percent correct. 70 on the 1-99 scale is not 70%.
- Assuming you can flag and return. You cannot; answer each question when you see it.
- Treating weights as credential-wide. Each module has its own 100% blueprint.
- Using the old fee numbers. $525/$325 appear in an older handbook; the current fee page says $550/$350.
- Counting on apprenticeship. Do not treat it as an established CH route.
- Assuming a pass equals certification. Documents must also be accepted, and certification is not state licensure.
- Studying from 2020 outlines. The 2026 outlines effective September 1, 2026 govern.
- Quoting the 2025 pass rates as current. They reflect the prior outline and separate cohorts.
After certification, career outcomes depend on where you practice and your licensure, so research them separately: see Dipl.C.H. Jobs, the Dipl.C.H. Salary Guide and the ROI analysis.
FAQ
It stands for Diplomate in Chinese Herbology. It is issued by the National Certification Board for Acupuncture and Herbal Medicine (NCBAHM), formerly NCCAOM; the name changed effective January 2026 while the credential and designation remained.
Three: Foundations of Oriental Medicine, Biomedicine and Chinese Herbology. Each is a separate Pearson VUE computer-adaptive exam with 100 multiple-choice questions and a 2-hour-30-minute limit, scheduled year-round.
No. Each module requires a scaled score of 70 on a 1-99 scale. That is a scaled standard, not 70% of questions answered correctly.
At current fee-page rates, $550 for the CH application plus $350 per module, which is $1,600 for the application and three first attempts. This excludes education, preparation, CNT and other costs, and older handbooks list different amounts.
No. Certification is separate from state licensure, and passing the examinations alone does not award certification until all required documents, such as your official transcript and approved CNT certificate, are accepted.