Preview Some of the Changes Coming to the ICD-10-CM Code Book

By Stantz, Renee | Medical Economics, October 25, 2012 | Go to article overview

Preview Some of the Changes Coming to the ICD-10-CM Code Book


Stantz, Renee, Medical Economics


Q: We are worried that the International Classification of Diseases and Related Health Problems, 10th Revision, Clinical Modification (ICD-IO-CM) book of codes is going to be very different from the book for ICD-9-CM. Can you explain the differences?

A: Overall, the ICD-IO-CM code book is structured and organized similarly to the ICD-9-CM code book

The ICD-IO-CM Alphabetic Index is divided into two parts: the Index to Diseases and Injury and the Index to External Causes of Injury. As with ICD-9-CM, a neoplasm table and a table of drugs and chemicals is included in the diseases and injury index.

The alphabetic index in ICD-IOCM is formatted the same way as the index in ICD-9-CM. Main terms set in boldface are listed in alphabetical order. Indented beneath the main term, any applicable subterm or essential modifier is shown in an alphabetic list The indented subterm is always read in combination with the main term. Nonessential modifiers appear in parentheses and do not affect the code number assigned. The "-" at the end of an index entry indicates that additional characters are required.

The ICD-IO-CM tabular list is divided into 21 chapters. For some chapters, the body or organ system is the axis of the classification. Other chapters group conditions by etiology or nature of the disease process.

ICD-9-CM has a single chapter for diseases of the nervous system and sense organs, whereas ICD-IO-CM has these conditions in three separate chapters.

Another difference is that ICD-IOCM does not separate the ICD-9-CM E codes and V codes from the core classification.

The order of the ICD-IO-CM chapters is a bit different from ICD-9CM. In ICD-IO-CM, disorders of the immune mechanism are included with diseases of the blood and blood-forming organs. In contrast, the immunity disorders are found in the ICD-9-CM chapter for endocrine, nutritional, and metabolic diseases. …

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Preview Some of the Changes Coming to the ICD-10-CM Code Book
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