- The One-Page Snapshot: Exam Facts at a Glance
- Fees, Vouchers and Membership Mechanics
- Open-Book Rules and Reference Setup
- The 12 Study-Guide Competencies in Plain English
- The Six Broader Exam Objectives
- Dermatology Procedure Coding Cheat Sheet
- Original Note-Based Practice Questions
- Which Domain to Study When
- After You Pass: CEUs, Jobs and Pay Context
- Frequently Asked Questions
- The CPCD exam is 100 multiple-choice questions in one four-hour sitting; 70 correct answers (70%) pass.
- It is open book: only the AMA CPT Professional Edition is approved for CPT; ICD-10-CM and HCPCS Level II can come from any publisher.
- CPCD is standalone: CPC, COC or CIC certification is not a prerequisite, though AAPC membership is required.
- Fee is USD $325 for one attempt or USD $399 for two; vouchers stay valid for one year from purchase.
The One-Page Snapshot: Exam Facts at a Glance
The Certified Professional Coder in Dermatology (CPCD) is a specialty credential issued by AAPC. It tests whether you can read dermatology physician-office notes and operative notes and turn them into accurate ICD-10-CM, CPT®, HCPCS Level II and modifier selections. This cheat sheet condenses the facts you should be able to recite without looking anything up, then points you to deeper guides when a topic deserves more than a bullet.
| Item | What to Know |
|---|---|
| Issuer | AAPC (American Academy of Professional Coders) |
| Testing provider | Meazure Learning, at a testing center or online with a live remote proctor |
| Format | 100 multiple-choice questions, one four-hour sitting |
| Passing standard | At least 70 correct answers, or 70% |
| Question content | Dermatology physician-office and operative-note coding scenarios |
| Prerequisite credential | None; CPC, COC or CIC is not required |
| Membership | Current AAPC membership required |
| Reference materials | Open book with approved code books |
| Voucher validity | One year from purchase |
If you only remember one thing from this table, remember that the exam rewards applied coding, not recall. You are working from notes, so the skill being measured is note abstraction plus accurate lookup. For a deeper look at how the cut score works in practice, see CPCD Passing Score 2026: Exactly What You Need to Pass.
Fees, Vouchers and Membership Mechanics
The pricing structure trips up many candidates because it is built around attempts, not member tiers. The exam fee is USD $325 for one attempt or USD $399 for two attempts. Those are attempt-count options, not member versus non-member prices. Membership is a separate requirement: you need current AAPC membership to sit for the exam, and you must keep it active annually afterward.
- Voucher window: Your exam voucher is valid for one year from purchase, so schedule your study plan backward from that date.
- Scheduling: Exams are scheduled through Meazure Learning, either at a testing center or via online live remote proctoring.
- Official study guide: USD $79.95 for members or $129.95 for non-members.
- Bundle (exam, study guide and practice exam): USD $499.99 for members or $598.90 for non-members.
The one-attempt versus two-attempt choice is really a risk decision. If you have been coding dermatology claims daily and the open-book format feels comfortable, one attempt may be enough. If you are moving into dermatology from another specialty, the two-attempt option can be worth the difference. Our CPCD Certification Cost 2026: Complete Pricing Breakdown walks through the total-cost math, and CPCD Exam Dates 2026: Testing Windows, Deadlines & Scheduling covers booking logistics.
Experience Expectations Versus Eligibility
AAPC's preparation course is aimed at candidates with at least two years of dermatology coding experience and working knowledge of medical terminology, anatomy and pathophysiology. Treat that as a readiness recommendation for the course, not a hard gate on sitting the exam. The credential itself is standalone, and you can read the full eligibility picture in CPCD Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Open-Book Rules and Reference Setup
Open book does not mean easy. Four hours for 100 questions sounds generous, but a scenario that requires you to check a Mohs code range, verify an add-on code, and confirm a modifier can burn several minutes. Your reference setup is part of your strategy.
Approved Reference Rules
Know exactly what you may bring so nothing is questioned on exam day.
- CPT®: only the AMA CPT Professional Edition is approved.
- ICD-10-CM and HCPCS Level II: any publisher is acceptable.
- You may use print books or the shared eBooks supplied within the exam platform; unrestricted personal eBooks are not allowed.
- Current-year or preceding-year print books are permitted, one copy of each. Upcoming-year books are excluded, and current-year books are recommended.
- The 2026 HCPCS exam update took effect March 2, 2026, so confirm your HCPCS book matches the version in play.
- The 2026 study guide states an E/M calculator is provided for the online exam.
Tab your books before test day, but do not rely on tabs to replace knowledge. The best-prepared candidates know the structure of the integumentary section well enough to open directly to the right subsection. The year of your code set and the edition of your study guide are not separate exam-version identifiers; just make sure your books fall within the permitted years.
The 12 Study-Guide Competencies in Plain English
The 2026 AAPC Specialty Study Guide for CPCD lists 12 top-level competency headings. These are unweighted competencies published in a preparation guide, not a percentage-based blueprint, and the guide itself describes its review as non-exhaustive. No official percentage weights have been verified, so do not trust any source that tells you exactly how many questions come from each area. For a full walkthrough, read CPCD Exam Domains 2026: Complete Guide to All 12 Content Areas.
Domains 1-2: Medical Terminology and Anatomy; Medical Physiology
The foundation for reading a dermatology note without guessing.
- Skin layers, appendages and lesion descriptions (macule, papule, plaque, nodule, vesicle)
- Anatomic site terminology, since site often drives code selection
- Pathophysiology of common conditions you will see in dermatology notes
Domains 3-5: Teaching Physician, Incident-To, Split/Shared
Medicare billing rules that determine who can be credited with a service.
- Teaching physician guidelines: what documentation proves the physician's presence and participation
- Incident-to: when a service performed by auxiliary staff can be billed under the physician
- Split/shared services: how work between a physician and a qualified practitioner is attributed
Domains 6-7: HIPAA Regulations; Proper Use of an ABN
Compliance topics that appear as short, rule-driven scenarios.
- HIPAA basics as they apply to coding and billing staff
- When an Advance Beneficiary Notice is appropriate, which matters for services Medicare may deny as not medically necessary
Domains 8-9: ICD-10-CM Coding; E/M Code Selection
The diagnosis and visit-level engine behind every dermatology claim.
- Diagnosis selection, specificity and sequencing from dermatology notes
- E/M selection using the AMA CPT® E/M guidelines, including medical decision making and time
Domains 10-12: CPT® Procedures; Modifiers; HCPCS Level II
Where most of the heavy lookup work happens.
- Domain 10 subtopics published in the guide: 10000 Series, 20000 Series, 40000 Series, Laboratory and Pathology, Radiology, Medicine and Category III codes
- CPT® and HCPCS Level II modifier usage
- HCPCS Level II coding for supplies, drugs and other items
The Six Broader Exam Objectives
AAPC's Help Center page for the credential publishes a separate set of six broader objectives. These are kept distinct from the 12 study-guide headings above, and you should not merge them into an invented weighted list. They are useful as a sanity check on what the exam is really asking you to do:
- Read and abstract physician office notes and operative notes to apply correct ICD-10-CM codes, CPT® codes, HCPCS Level II codes and modifiers.
- Understand E/M guidelines for new and established office and outpatient services, plus other E/M services such as consultations and hospital services.
- Know Medicare billing rules, including incident-to, teaching situations, shared visits, consultations and global surgery.
- Code surgical procedures performed by dermatologists, such as debridement, lesion excisions, flaps and Mohs micrographic surgery.
- Medical terminology.
- Anatomy and physiology.
Notice how heavily the objectives lean toward Medicare rules and surgical coding. If you build your preparation around the CPCD Study Guide 2026: How to Pass on Your First Attempt, use these six objectives as a checklist against the 12 headings so nothing falls through the cracks.
Dermatology Procedure Coding Cheat Sheet
Procedure coding is where dermatology differs most from general coding. Below are the decision points that appear again and again in office and operative notes. Always verify specific code numbers and descriptors in your current CPT® book; this sheet is about the logic, not a substitute for the code set.
Lesion Excision: Measure and Classify First
- Benign versus malignant: The excision code family depends on the pathology-supported nature of the lesion. If the note is pending pathology, the claim timing and code choice need attention.
- Excised diameter: Code selection uses the greatest clinical diameter of the lesion plus the margins required for complete excision, measured before the excision. Operative notes that list only the specimen size can mislead you.
- Anatomic site: Trunk, arms and legs; scalp, neck, hands, feet and genitalia; and face, ears, eyelids, nose, lips and mucous membrane fall into different code groupings.
- Repair: Closure is separate from the excision. Simple, intermediate and complex repairs have distinct definitions, and layered closure is a common trap.
Destruction, Biopsy and Debridement
- Distinguish destruction of benign lesions, premalignant lesions and malignant lesions, since each has its own code logic and counting rules.
- Biopsy codes depend on the technique and whether additional lesions were sampled; read for the number of lesions and the method.
- Debridement requires attention to the depth of tissue removed and the total surface area treated.
Flaps, Grafts and Mohs Micrographic Surgery
- Adjacent tissue transfer (flaps): Coded by defect size and anatomic area, with the defect measured after the lesion is excised. Know how this interacts with excision coding.
- Mohs surgery: Coding is built around stages and tissue blocks, with add-on codes for additional stages or blocks. The surgeon must serve as both surgeon and pathologist for the Mohs codes to apply. Watch how reconstruction after Mohs is documented and coded separately.
- Global surgery: Know the concept of the global period and when a separately identifiable E/M can be reported with a procedure, which is where modifiers come in.
Original Note-Based Practice Questions
The following are original practice items written to mirror the scenario style of the exam. They are not actual exam questions. For more timed practice, use the CPCD practice test.
Question 1: Excision Measurement
A dermatologist's operative note states: "Biopsy-proven basal cell carcinoma, left cheek. Lesion measures 1.0 cm. Margins of 0.4 cm taken circumferentially. Specimen sent to pathology. Defect closed in layers with a documented intermediate repair."
Which diameter should drive the excision code selection?
- A. 1.0 cm
- B. 1.4 cm
- C. 1.8 cm
- D. The pathology specimen size
Answer: C. Excised diameter is the lesion plus the margin on each side: 1.0 + (0.4 × 2) = 1.8 cm. Using the lesion alone undercounts the work, and the specimen size is not the basis for selection. The intermediate repair is reported separately.
Question 2: Modifier Trigger
An established patient presents for a scheduled shave biopsy of one lesion. During the visit, the dermatologist also evaluates and manages a new complaint of widespread pruritus, documents a history, exam and medical decision making unrelated to the biopsy, and prescribes treatment.
What should the coder consider?
- A. Report only the biopsy; the E/M is always bundled
- B. Report an E/M with a modifier showing it is significant and separately identifiable, along with the biopsy
- C. Report two biopsies
- D. Report only the E/M
Answer: B. The documentation supports a separately identifiable E/M beyond the usual pre-procedure work, which is the scenario modifier 25 addresses. Always confirm that the documentation, not just the existence of a visit, supports the separate service.
Question 3: Incident-To
A medical assistant performs a routine suture removal for an established patient under the physician's supervision, and the physician is in the suite.
Which Medicare concept is most relevant to deciding who the service is billed under?
- A. Split/shared service
- B. Incident-to
- C. Teaching physician rule
- D. ABN
Answer: B. Services furnished by auxiliary personnel under the physician's supervision, as part of an established plan of care, are the territory of incident-to rules. Always verify the specific requirements for the setting and payer.
Which Domain to Study When
Rather than study in guide order, sequence by dependency. Terminology and anatomy come first because every other domain assumes you can read the note. Medicare rules come next because they are rule-based and quick to lock in. Procedures and modifiers come last because they require the most lookup practice. This is the only structured plan in this article, and it is tied directly to the dermatology content.
Terminology, Anatomy, Physiology
- Learn lesion descriptors and skin structure
- Practice abstracting sites and sizes from sample notes
Medicare Rules and Compliance
- Teaching physician, incident-to, split/shared
- HIPAA and ABN scenarios
ICD-10-CM and E/M
- Dermatology diagnosis specificity
- Medical decision making and time-based selection
Procedures, Modifiers and HCPCS Level II
- Excision, destruction, biopsy, repair, flaps, Mohs
- Modifier triggers and HCPCS supplies and drugs
Timed Mixed Practice
- Full-length simulation using your approved books only
- Review every miss against the code book, not memory
If you are unsure how much preparation you need, read How Hard Is the CPCD Exam? Complete Difficulty Guide 2026. And note that a general AAPC marketing pass rate is not a verified CPCD-specific figure; our CPCD Pass Rate 2026: What the Data Shows article explains what can and cannot be said honestly.
After You Pass: CEUs, Jobs and Pay Context
Earning the credential is not the finish line. To keep it, maintain annual AAPC membership and report 36 CEUs every two years for a single credential, with 8 of those being dermatology-specific. If you hold two credentials, the requirement is 40 total CEUs, not two separate 36-CEU totals, and higher totals apply to additional credentials.
Employers who value this credential are those that code dermatology claims: dermatology practices, multispecialty groups with dermatology departments, Mohs surgery practices, and billing companies serving dermatologists. For a look at the roles that typically ask for it, see CPCD Jobs and CPCD Training.
Frequently Asked Questions
The exam has 100 multiple-choice questions delivered in a single four-hour sitting. You need at least 70 correct answers, or 70%, to pass. Questions are built around dermatology physician-office and operative-note coding scenarios.
No. CPCD is a standalone credential, so another AAPC certification is not a prerequisite. You do need current AAPC membership. The suggested two years of dermatology coding experience applies to the preparation course as a readiness recommendation, not as a mandatory exam requirement.
No. Only the AMA CPT Professional Edition is approved for CPT. ICD-10-CM and HCPCS Level II references may come from any publisher. Current- or preceding-year print books are allowed, one copy of each, and upcoming-year books are excluded. Shared eBooks supplied inside the exam platform are an option, but unrestricted personal eBooks are not.
The fee is USD $325 for one attempt or USD $399 for two attempts, and those are attempt-count options rather than member or non-member prices. Vouchers are valid for one year from purchase. AAPC membership is required separately.
Maintain annual AAPC membership and report 36 CEUs every two years for one credential, including 8 dermatology-specific CEUs. Two credentials require 40 total CEUs. For background on what the credential represents, see What Is CPCD Certification? and, when you are ready to test your skills, try the CPCD practice exams.