EC Cheat Sheet 2026

The 30 highest-yield EC facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is the name of the innermost layer of the hair shaft? → Medulla
2. What is the primary purpose of posting a Hazard Communication (HazCom) sign in an electrolysis treatment room? → To inform employees of chemical hazards present in the workplace
3. The arrector pili muscle is responsible for which phenomenon? → 'Goosebumps' when hair stands erect
4. A 'skin type classification' using the Fitzpatrick scale in an electrolysis intake form primarily helps the practitioner: → Assess pigmentation risk and adjust settings to minimize hyperpigmentation
5. In Registry Operations & Management, what is the FIRST step a EC professional should take when encountering a new case or situation? → Conduct a comprehensive assessment and gather all relevant information
6. In an electrolysis practice, a SOAP note's 'Assessment' section serves to classify the client encounter by: → Summarizing the electrologist's clinical judgment about treatment progress
7. In electrolysis classification systems, pseudofolliculitis barbae (ICD-10 L73.1) is relevant because electrolysis is sometimes used to treat it by: → Permanently removing the follicles causing chronic ingrown hairs
8. What percentage of scalp hairs are typically in the telogen (resting) phase at any given time? → 15–20%
9. What does the term 'sanitization' mean in the context of electrolysis? → Reducing microbial count to a safe public health level
10. The deepest, most active layer of the epidermis responsible for cell renewal is called the: → Stratum basale
11. A client discloses they are on blood-thinning medication. How does this affect electrolysis safety? → Increased risk of prolonged bleeding and bruising
12. Which standard of practice is MOST important for ensuring quality in Confidentiality & Data Security? → Following evidence-based protocols while adapting to specific circumstances
13. Under NEC (not elsewhere classified) coding logic in ICD-10, an electrologist would use an NEC code when: → The documented condition does not fit any more specific code
14. What is the correct sequence for processing reusable electrolysis instruments? → Clean → Disinfect → Package → Sterilize
15. Which document outlines the ethical obligations and professional behavior expected of AEA-certified electrologists? → AEA Code of Ethics
16. Which skin layer houses the hair follicle bulb and dermal papilla? → Dermis
17. Which ICD-10 code block covers 'other follicular disorders' and includes codes frequently referenced in electrolysis documentation? → L66–L68
18. Professional liability insurance for electrologists primarily protects against claims arising from which situation? → Client injury or dissatisfaction resulting from professional services
19. What is the PRIMARY purpose of continuing education requirements in Reporting Requirements & Standards for EC professionals? → Maintaining current knowledge and competency as the field evolves
20. Which standard of practice is MOST important for ensuring quality in Coding & Classification Systems? → Following evidence-based protocols while adapting to specific circumstances
21. When documenting electrolysis for a transgender client as medically necessary, which CPT code range covers most electrolysis procedures billed to insurance? → 17380
22. When a cancer registry abstracts 'class of case,' a code of '00' indicates: → Diagnosis elsewhere, initial treatment at the reporting facility
23. What gives hair its color? → Melanin produced by melanocytes in the hair bulb
24. An electrolysis intake form field that records 'hair growth pattern: terminal / vellus / lanugo' is an example of which classification type? → Hair type classification by structure and pigmentation stage
25. When a conflict arises between standard procedures and a unique situation in Registry Operations & Management, what should a EC professional prioritize? → Safety and ethical obligations while seeking expert consultation
26. For record retention classification, most US states require electrolysis client records to be kept for a minimum of: → 7 years after last treatment
27. Which standard of practice is MOST important for ensuring quality in Registry Operations & Management? → Following evidence-based protocols while adapting to specific circumstances
28. What is the PRIMARY purpose of continuing education requirements in Registry Operations & Management for EC professionals? → Maintaining current knowledge and competency as the field evolves
29. Which skin condition is an absolute contraindication for electrolysis over the affected area? → Eczema in active flare
30. Which practice best demonstrates professionalism when a client complains about a treatment result? → Listen attentively, document the concern, and offer a solution within scope of practice