Free practice + study guide

NHA Medical Billing & Coding (CBCS)

NHA Certified Billing and Coding Specialist (CBCS) Exam — 125 questions (100 scored, 25 unscored pretest) · 180 minutes · Passing score: Scaled score of 390 on a 200–500 scale. PrepPass also publishes a complete study guide for this exam as a downloadable book (89 pages, 35 practice questions inside, $14.99).

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Practice questions399 free practice questionsTimed mock examTimed mock, free
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A printable colour cheat sheet for the exam: the format, the content areas and the figures it turns on, each checked against a named source and dated.

Medical Billing & Coding cheat sheet PDF — $9.99 →

4 pages · US Letter · printable PDF · yours to keep

01

Test what you know · free, all of it

Five ways to practise.

The same 399 questions, dealt five ways. Pick the one that fits the time you have.

Quick 10Start here
Ten questions, no feedback while you answer. Then one report: all 10 explained, each pointing at the chapter that teaches it.
10 questionsabout 5 minevery answer explained
By section
Pick Coding, Billing & Claims, Compliance & Regulatory, Reimbursement. An explanation appears the moment you answer.
399 questionsuntimed
Timed mock
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100 questions120 minutes
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all 399, by section
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02

Learn what the questions test

Practice finds the gaps. Reading closes them. The four chapters below are free to read online. The study guide book is a separate download, sold on its own page.

Practice · free
399
questions, each explained — finds what you don't know yet
Learn · the guide
89
pages in the study guide book, section by section

The four sections, as chapters

free to read online
  1. 1Medical Coding: ICD-10-CM, CPT, and HCPCSCoding · 32% of the exam — the largest sectionRead free →
  2. 2Billing and Claims ProcessingBilling & Claims · 30%Read free →
  3. 3Compliance and Regulatory StandardsCompliance & Regulatory · 20%Read free →
  4. 4Reimbursement Methodologies and Patient FinancialsReimbursement · 18%Read free →
Cover: Medical Billing & Coding (CBCS) — Complete Study Guide (2026)
Study guide · PDF + EPUB
Medical Billing & Coding (CBCS) — Complete Study Guide (2026)
89 pages · 35 practice questions inside · updated 2026-10-23
$14.99 one-time · yours to keep
Get the book — $14.99Read a chapter free
03

Before you sit

Know the exam you're walking into.

Free study guideEvery section, online
04

See the questions first

Two from the bank, answered.

Real items, with the answer marked and the reason written out — the same format as all 399.

Coding

In ICD-10-CM, what does the abbreviation NOS in the Alphabetic Index or Tabular List indicate?

  1. AThe documentation is unspecified, so an 'unspecified' code is assignedCorrect
  2. BThe code requires an additional character to be complete
  3. CTwo separate codes must be combined into one
  4. DThe condition should never be coded as a primary diagnosis

Why: NOS stands for 'not otherwise specified' and is equivalent to 'unspecified.' It is used when the medical record lacks the detail needed to assign a more specific code. Coders should query the provider when greater specificity is clinically documented but not captured.

Billing & Claims

The HIPAA electronic transaction used to submit institutional (facility) claims, corresponding to the UB-04, is the:

  1. A837ICorrect
  2. B270 eligibility inquiry
  3. C835 remittance
  4. D837P

Why: The 837I is the institutional claim transaction that corresponds to the paper UB-04. The 837P is the professional version for the CMS-1500, and the 835 is the electronic remittance advice.HIPAA

Read all 399 questions with answers →

06

The exam itself

NHA Medical Billing & Coding (CBCS), by the numbers.

Questions125 questions (100 scored, 25 unscored pretest)100 scored items plus 25 unscored pretest items, per NHA's test plan. The test plan says coding manuals (CPT, ICD-10-CM and HCPCS) are required for the exam.
Time180 minutes
SectionsCoding · Billing & Claims · Compliance & Regulatory · Reimbursement
Passing scoreScaled score of 390 on a 200–500 scaleThis is a scaled score, not a percentage. NHA weights items by difficulty and does not publish the raw-to-scaled conversion, so it cannot be restated as a percentage or as a number of correct answers. Score reports additionally rate each content area as above, near or below the passing standard.
Our bank399 questions · updated August 2026Written from National Healthcareer Association (NHA)
LanguagesEnglish
SourceNational Healthcareer Association (NHA)Verified 2026-09-24

Full facts and sources →

Other medical billing and coding exams

AAPC Certified Professional Coder (CPC)Certified Professional Coder (CPC®) Exam — 100 questions · 240 minutes · Passing score: 70%.299 free practice questions · exam facts and sources · study guide, $14.99
NHA Medical Assistant (CCMA)Certified Clinical Medical Assistant (CCMA) Certification Examination — 180 questions (150 scored, 30 unscored pretest) · 180 minutes · Passing score: Scaled score of 390 on a 200–500 scale.300 free practice questions · exam facts and sources · study guide, $19.99
07

Helpful resources

The board's own page, and what else helps.

Register — NHA (official) →

Recommended prep — books & tools

  • Step-by-Step Medical Coding

    The widely used Buck's textbook for learning ICD-10/CPT coding.

    See it on Amazon →

This section contains affiliate links. As an Amazon Associate, PrepPass earns from qualifying purchases. We may earn a commission if you buy through these links, at no extra cost to you.

08

Allied Health Certification Exams

On the same path.

AAPC Certified Professional Coder (CPC)299 free questions · mock 50 q / 240 min · guide $14.99ABO Optician100 free questions · mock 100 q / 120 min · guide $19.99AHIMA RHIT (Registered Health Information Technician)23 free questions · mock 23 q / 210 min

All 14 exams in Allied Health Certification Exams →

09

Questions

Asked before starting.

Is the practice really free, or does it stop after a few questions?

All 399 questions, the timed mock and the report are free with no sign-up. A free account only adds saving your progress. The study guide book is sold separately, $14.99 one-time; nothing in the practice requires it.

Is your mock the same as the real NHA Medical Billing & Coding (CBCS)?

No. Ours is 100 questions in 120 minutes; the real exam is 125 questions in 180 minutes. Use the mock for stamina and section timing, not as a score predictor.

What score do I need?

Scaled score of 390 on a 200–500 scale — as published by National Healthcareer Association (NHA). Confirm the current rule with them before your exam date.

Who administers the NHA Certified Billing and Coding Specialist (CBCS) Exam?

National Healthcareer Association (NHA) — exam delivered by a PSI testing center, a live remote proctoring provider, or the candidate's own school or employer. NHA states that where live remote proctoring is used, the proctoring provider is selected for the candidate at registration.

How many questions are on the NHA Certified Billing and Coding Specialist (CBCS) Exam?

125 questions (100 scored, 25 unscored pretest). 100 scored items plus 25 unscored pretest items, per NHA's test plan. The test plan says coding manuals (CPT, ICD-10-CM and HCPCS) are required for the exam.

How long is the NHA Certified Billing and Coding Specialist (CBCS) Exam?

180 minutes

How much does the NHA Certified Billing and Coding Specialist (CBCS) Exam cost?

Not checked. NHA sells the exam through its store, which renders prices only in the browser; the page's HTML read on the retrieval date carries no amount, so PrepPass states none.

What languages is the NHA Certified Billing and Coding Specialist (CBCS) Exam offered in?

English. English only, stated affirmatively in the handbook rather than merely absent from it: NHA does not provide translated forms, translation aids or interpreters.

Is the NHA Medical Billing & Coding (CBCS) study guide a PDF?

Yes. Medical Billing & Coding (CBCS) — Complete Study Guide (2026) downloads as PDF + EPUB (89 pages, 35 practice questions inside), $14.99 one-time, and the files are yours to keep. The 399 practice questions on this page stay free without it. See the study guide →

Practice questions are AI-assisted study material written from National Healthcareer Association (NHA) and reviewed by PrepPass — for practice only, not official exam questions. Bank updated August 2026. PrepPass is an independent study resource and is not affiliated with, endorsed by, or approved by National Healthcareer Association (NHA). Always confirm current exam details with National Healthcareer Association (NHA).
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