Which Codebooks to Buy for the CPC Exam

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If you're studying for the CPC, the book question shows up early. Which publisher, which edition, new or used. Fair questions. These books are heavy, they cost real money, and you need three of them.

I passed the CPC, CEDC, and COSC using AAPC's ICD-10-CM and HCPCS books, along with the AMA CPT Professional the exam requires. I bought them on Amazon instead of through AAPC because I had Prime, so I didn't pay for shipping. Here's how I'd shop for the CPC right now, in October 2026.

Start with the year

This part trips people up, especially in the fall.

AAPC says its exams are based on the current calendar year's code sets, and the exams update every January. The upcoming year's books are not allowed. You can use the previous year's books, though AAPC's examinee instructions say you'd be at an obvious disadvantage, and books older than one year are out.

So if you test between now and the end of December, buy the 2026 books: 2026 AMA CPT Professional, a 2026 ICD-10-CM, and a 2026 HCPCS Level II. If you test in 2027, wait for the 2027 set and AAPC's January update.

ICD-10-CM is the confusing one. The FY2027 code set went live for claims on October 1, 2026, and runs through September 30, 2027, per CMS. Publishers put 2027 on those covers. At work, that's the book you use today. For a CPC exam this fall, it's next year's book. Leave it on the shelf until January.

CPT and HCPCS Level II run on the calendar year. CPT 2027 takes effect January 1, 2027, and the January 2027 HCPCS quarter starts the same day.

A heads-up for October shoppers: 2027 editions are already showing on Amazon, and they sit right next to the 2026 books in search results. Read the cover year on every listing before you click buy. Check the current price on Amazon when you order; prices move.

What's allowed for the CPC

Per AAPC's list of exam books and examinee instructions:

- CPT: AMA Professional Edition only. Print. No other publisher, and not a Kindle edition.

- ICD-10-CM: your choice of publisher. A printed copy of the ICD-10-CM Official Guidelines is also approved.

- HCPCS Level II: your choice of publisher.

You can skip ICD-10-PCS (that's for the CIC), medical dictionaries, and anatomy atlases. None of them are on the CPC list. AAPC's exam bundle page maps out which books go with which exam if you're planning ahead for a specialty credential.

1. ICD-10-CM (diagnosis codes)

Any publisher works, so pick on layout. For a 2026 exam, I'd start with AAPC:

- AAPC ICD-10-CM Code Book 2026. Spiral-bound, 8.5 x 11, part of AAPC's 2026 exam bundle, with adhesive tab dividers included.

- Optum ICD-10-CM Expert for Physicians 2026 is an alternative. I'd skip it unless you already know you prefer Optum's layout. The Amazon listing notes missing snap-in tabs, and some reviews report misprints.

What matters on exam day: A big chunk of ICD-10-CM time goes to bouncing between the Alphabetic Index and the Tabular List, plus the Neoplasm Table and the Table of Drugs and Chemicals. A spiral binding keeps the book flat while you flip. Chapter tabs speed things up. Compare how each publisher marks Excludes1 and Excludes2 notes and "use additional code" instructions, and check type size. AAPC lists its ICD-10-CM at 7 to 8 point type, which is small. Color coding is nice until a page gets so busy you can't find the code.

2. CPT (procedure codes)

One choice here: the AMA CPT Professional 2026. AAPC lists it as spiral-bound, 8.5 x 11. Buy the print edition. AAPC allows only AMA's printed Professional CPT.

Watch for lookalikes. AAPC's examinee instructions name several references that are not allowed, including CPT Plus! from PMIC, AMA's CPT Insider's View, and Procedural Coding Expert. Some of those show up right next to the Professional Edition in search results.

What matters on exam day: CPT is the book you'll live in. The guidelines at the start of each section settle a lot of questions, and the parenthetical notes under individual codes settle plenty more. Tab every section, then add tabs for the subsections you keep losing. Once you learn the code ranges, you'll often beat the index.

3. HCPCS Level II (supplies, drugs, and services outside CPT)

Whatever publisher you pick is up to you here, too. For 2026, I'd start with AAPC again:

- AAPC HCPCS Code Book 2026. Spiral-bound, 8.5 x 11, also in the 2026 exam bundle.

- Alternatives if you want to compare: AMA HCPCS 2026 Level II Professional, Optum HCPCS Level II Expert 2026.

CMS posts HCPCS files for free each quarter, but they're spreadsheets, and CMS no longer publishes the Table of Drugs or HCPCS Index with them. For studying, a bound book is a lot friendlier.

What matters on exam day: HCPCS gets the lightest use of the three, but you'll still reach for it on drug codes, supplies, and modifiers. Tab the Table of Drugs. Read how your book shows units in drug descriptors, since dose math is a classic spot to lose easy questions.

Print books, notes, and tabs

Bring print books and mark them up. AAPC's own pages disagree about eBooks for exams, so I wouldn't count on them.

AAPC's rules on what's allowed in your books are friendlier than people expect:

- Handwritten notes are allowed if they relate to daily coding. Notes from study guides, practice exams, or exam questions are not.

- Tabs can be inserted, taped, glued, or stapled in, as long as they mark a page with words or numbers and don't add information.

- Altering, whiting out, painting, or printing over pages to supplement information is prohibited, per the examinee instructions.

New or used?

Used is fine if the year is right. Check three things: the cover year is 2026 (for a fall test), any handwritten notes stay within AAPC's rules, and the spiral and pages are intact. A book that sheds pages mid-exam makes for a bad afternoon.

What I'd buy now

Testing before January, I'd get the AMA CPT Professional 2026, the AAPC ICD-10-CM Code Book 2026, and the AAPC HCPCS Code Book 2026. For studying at home, I also bought the AAPC Official CPC Certification 2026 Study Guide on Amazon. Leave that one at home on exam day. Then a pack of plastic tabs you can write on, a highlighter, and a weekend of practice questions with all three codebooks open. Skip paper sticky-note tabs. They don't hold up.

Testing in 2027, I'd wait and buy the 2027 set after AAPC's January update. You'll spend a lot of hours with these books, so pick the ones you can read fast.