Medical Office Assistant · Medical Economics, Billing, and Coding

ICD-10-CM Purpose and Structure

On this page 3 sections
  1. Quick check
  2. Study tools
  3. Sources & references

Quick check

5 questions here, of 85 in this lesson’s practice set. Answers stay hidden until you check.

Question 1 of 5foundational

In the United States, what is the primary purpose of the ICD-10-CM code set?

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Question 2 of 5foundational

The abbreviation 'ICD-10-CM' stands for which of the following?

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Question 3 of 5intermediate

Which statement best describes the relationship between the World Health Organization's ICD-10 and the U.S. ICD-10-CM?

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Question 4 of 5foundational

Under HIPAA, ICD-10-CM is the standard code set that covered entities must use for reporting which type of information?

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Question 5 of 5intermediate

A medical office assistant is preparing a claim for a patient treated for acute bronchitis. Which code set should carry the diagnosis of acute bronchitis?

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Practice all 85

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Study tools & related lessonsYou’ll learn to · Related

You’ll learn to

  • Explain the purpose of ICD-10-CM and its role in diagnosis reporting, medical necessity, reimbursement, and public health statistics.
  • Describe the structure of ICD-10-CM codes, including categories, subcategories, character composition, laterality, placeholder characters, and seventh-character extensions.
  • Relate the Alphabetic Index and the Tabular List and apply the look-up-then-verify workflow.
  • Label the annual ICD-10-CM update cycle and its effective date.
  • Recognize scope-of-practice boundaries and escalate code-assignment decisions to qualified coding staff.

Sources & references

  1. Centers for Medicare & Medicaid Services — ICD-10
  2. World Health Organization — ICD-10 Classification of Diseases
  3. American Health Information Management Association — AHIMA - Health Information and Coding

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