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Question: 1 / 400

Which of the following is true regarding the use of brackets in ICD-9-CM coding?

They signify optional information

They are always sequenced as principal diagnosis

They represent the manifestation of the underlying condition

Brackets in ICD-9-CM coding represent the manifestation of the underlying condition. This means that the code inside the brackets specifies a more specific or detailed description of the diagnosis, which may help with treatment or reimbursement. Option A is incorrect because brackets are used for necessary, not optional, information. Option B is incorrect because brackets do not have a specific sequencing requirement. Option D is incorrect because brackets do not indicate primary diagnosis category; that is determined by the code before the decimal point.

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They indicate primary diagnosis category

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