Table of Contents
This CPC exam cheat sheet PDF gives you a compact quick-reference covering every high-yield topic you need on exam day — CPT modifiers, ICD-10-CM sequencing rules, E&M levels, anesthesia formula, and a full domain breakdown by question weight. Print it, tab it, and keep it beside your codebooks while you study.
All Exam Domains — Question Weights
The CPC exam has 100 questions divided across content domains. Knowing which domains carry the most questions helps you prioritize study time. Surgery CPT codes alone account for roughly 36% of the exam — by far the most critical section.
| Domain | ~Questions | Weight | Priority |
|---|---|---|---|
| Surgery CPT — All Body Systems | 36 | 36% | Must Master |
| Medical Cases (Operative Records) | 10 | 10% | Must Master |
| Radiology / Pathology / Medicine | 18 | 18% | High |
| Coding Guidelines & Modifiers | 7 | 7% | High |
| Medical Terminology & Anatomy | 8 | 8% | Medium |
| Evaluation & Management (E&M) | 6 | 6% | High |
| ICD-10-CM Diagnosis Codes | 5 | 5% | High |
| Anesthesia + HCPCS Level II | 10 | 10% | Medium |
Top CPT Modifiers — Quick Reference
Modifiers appear throughout the exam — in standalone modifier questions and embedded in surgery coding scenarios. These are the modifiers tested most frequently. Know what each one means and when it applies.
| Modifier | Name | When to Use |
|---|---|---|
| -25 | Significant, Separately Identifiable E&M | E&M performed same day as a procedure — must be separate and distinct from the procedure |
| -51 | Multiple Procedures | Second or additional procedure by same physician same day — reduces reimbursement on secondary codes |
| -59 | Distinct Procedural Service | Overrides NCCI bundling when procedures are truly separate — requires supporting documentation |
| -22 | Increased Procedural Services | Procedure substantially more complex than usual — requires operative report documentation |
| -57 | Decision for Surgery | E&M on day of or day before major surgery when the decision to operate was made |
| -26 | Professional Component | Physician interpretation only (e.g. reading a radiology scan) — no technical component billed |
| -TC | Technical Component | Equipment and staff only — no physician interpretation included |
| -50 | Bilateral Procedure | Same procedure performed on both sides of the body at the same operative session |
| -52 | Reduced Services | Procedure partially reduced or eliminated at physician’s discretion |
| -53 | Discontinued Procedure | Procedure started but stopped due to patient’s well-being — before anesthesia administration |
| -58 | Staged or Related Procedure | Procedure during global period — planned, more extensive, or therapeutic following diagnostic |
| -78 | Unplanned Return to OR | Return to operating room during global period for a related complication |
| -79 | Unrelated Procedure During Global Period | Different, unrelated procedure by same surgeon during global period |
| -80 | Assistant Surgeon | Second surgeon assists primary surgeon — reduced fee applies |
ICD-10-CM Sequencing Rules
ICD-10-CM questions test your knowledge of official coding guidelines — primarily sequencing (which code goes first), combination codes, and when to use additional codes. These rules come from the CMS ICD-10-CM Official Guidelines for Coding and Reporting.
Principal vs. First-Listed Diagnosis
- Inpatient (hospital): Principal diagnosis = condition established after study to be chiefly responsible for the admission
- Outpatient: First-listed diagnosis = the main reason for the encounter (confirmed or highest degree of certainty)
Key Sequencing Rules
- Combination codes: Use one code to classify two related conditions or a condition plus its complication — do not code both separately when a combination code exists
- Acute + chronic: Sequence the acute condition first; add the chronic condition as a secondary code
- Signs and symptoms: Do NOT code signs or symptoms when a confirmed diagnosis is documented — only code the confirmed diagnosis
- Z-codes: Used for encounters not due to illness or injury (screenings, history, status) — can be principal or secondary depending on context
- External cause codes: Never sequenced as principal diagnosis — always secondary to the injury or condition code
- Sequela (late effects): Sequence the residual condition first, then the sequela code — do not use active phase codes for healed conditions
- Uncertain diagnoses — inpatient: Code as if confirmed when documented as “probable,” “suspected,” or “likely”
- Uncertain diagnoses — outpatient: Code the sign or symptom only — do NOT code uncertain diagnoses in outpatient settings
Evaluation and Management — Level Selection
Office and outpatient visits (99202–99215) are leveled by either Medical Decision Making (MDM) or total time on the date of the encounter. The old history and examination key components no longer determine the level for these visits under current CPT guidelines.
Office and Outpatient Visit Codes
| Code | Patient Type | MDM Level | Total Time (typical) |
|---|---|---|---|
| 99202 | New | Straightforward | 15–29 min |
| 99203 | New | Low | 30–44 min |
| 99204 | New | Moderate | 45–59 min |
| 99205 | New | High | 60–74 min |
| 99211 | Established | N/A (may not require physician) | Minimal |
| 99212 | Established | Straightforward | 10–19 min |
| 99213 | Established | Low | 20–29 min |
| 99214 | Established | Moderate | 30–39 min |
| 99215 | Established | High | 40–54 min |
MDM — Three Elements (Two of Three Required)
- Number and complexity of problems addressed
- Amount and/or complexity of data reviewed and analyzed
- Risk of complications and/or morbidity or mortality
Anesthesia Formula
Anesthesia codes (00100–01999) use a unit-based payment formula rather than the standard RVU method. The CPC exam typically tests this formula with one or two calculation questions.
Payment Formula
(Base Units + Time Units + Modifying Units) × Conversion Factor = Total Payment
- Base units: Assigned to each anesthesia CPT code — found in the CPT book appendix or payer fee schedule
- Time units: 1 unit per 15 minutes of anesthesia time (some payers use 1 unit per 10 minutes)
- Modifying units: Added for qualifying circumstances (codes 99100–99140)
- Conversion factor: Dollar value per unit — varies by payer and geographic region
Qualifying Circumstance Codes
| Code | Circumstance | Additional Units |
|---|---|---|
| 99100 | Extreme age (under 1 year or over 70) | +1 unit |
| 99116 | Utilization of controlled hypotension | +5 units |
| 99135 | Controlled hypotension | +5 units |
| 99140 | Emergency conditions | +2 units |
Surgery CPT Ranges by Body System
Knowing which code range corresponds to each body system lets you navigate quickly under exam time pressure. Use this as a tab guide when setting up your CPT manual before exam day.
| Body System | CPT Range | Common Exam Topics |
|---|---|---|
| Integumentary (skin) | 10000–19999 | Wound repair, skin grafts, lesion removal |
| Musculoskeletal | 20000–29999 | Fractures, joint procedures, arthroscopy |
| Respiratory | 30000–32999 | Bronchoscopy, thoracotomy, pleural drainage |
| Cardiovascular | 33000–37999 | Heart valves, bypass grafts, vascular repair |
| Hemic & Lymphatic | 38000–38999 | Spleen, lymph nodes, bone marrow |
| Digestive | 40000–49999 | Endoscopy, hernia repair, colostomy |
| Urinary | 50000–53999 | Cystoscopy, nephrectomy, lithotripsy |
| Female Genital | 56000–58999 | Hysterectomy, laparoscopy, obstetrics |
| Nervous System | 61000–64999 | Spine surgery, nerve blocks, craniotomy |
| Eye & Ocular Adnexa | 65000–68899 | Cataract, retinal procedures |
Exam-Day Strategy Tips
Knowing the content is half the battle. Using your 4 hours efficiently is the other half. These strategies are consistently used by first-attempt pass candidates.
Time Management
- Target pace: 2.4 minutes per question (100 questions ÷ 240 minutes)
- Do not spend more than 3 minutes on any single question on the first pass — mark it and move on
- The 10 medical case questions are the most time-consuming — budget 20–30 minutes for that section
- Reserve 15–20 minutes at the end to revisit marked questions
Codebook Setup
- Tab your CPT book by section: E&M → Anesthesia → Surgery → Radiology → Pathology → Medicine
- Tab ICD-10-CM at the main category dividers (A, B, C, D… Z chapters)
- Highlight CPT instructional notes — “Do not report X with Y” — these are direct exam question sources
- Annotate your modifier guidelines page — it is referenced repeatedly across surgery questions
Answer Strategy
- Read the question stem first, then the clinical scenario — know what is being asked before reading the full note
- Eliminate obviously wrong answers before choosing from the remaining options
- When two codes appear similar, look for the difference in anatomical site, laterality, or specificity
- There is no penalty for wrong answers — always provide an answer, never leave a question blank
For a structured approach to building all these skills before exam day, follow our 90-day CPC study plan. It breaks down every domain week by week so nothing gets missed.
Can I bring a cheat sheet into the CPC exam?
No. You cannot bring personal notes, cheat sheets, or printed reference cards into the CPC exam. You are permitted to bring your CPT, ICD-10-CM, and HCPCS Level II codebooks with highlighting and tabs — but no written annotations or external notes. Always verify the current rules on the AAPC website before your exam date.
What is the most important topic to memorize for the CPC exam?
CPT modifiers are the highest-yield area for memorization. Under exam time pressure you cannot always look up every modifier quickly. Know modifiers -25, -51, -59, -57, -22, and -26 by heart — their definitions and the clinical scenarios where each one applies.
How many questions do I need to get right to pass?
You need a score of 70% or higher. With 100 questions, that means answering at least 70 correctly. There is no penalty for wrong answers — always provide an answer even when unsure.
Is there a free printable version of this cheat sheet?
Yes — a formatted 2-page printable PDF version is available on our 📥 Download CPC Cheat Sheet PDF
Where can I practice CPC exam questions?
Take our free 25-question CPC practice quiz covering CPT, ICD-10-CM, and E&M. Every question includes a detailed explanation so you understand the reasoning behind the correct answer.