MRC135 - ICD10: Diagnostic Coding

Week 3: ICD-10-CM Tables

The Table of Neoplasms is indexed by anatomic site.

Refer to the ICD-10-CM guidelines, Section C.1.2, for more information about how to code neoplasms.


The following readings will help you learn about the concepts covered this week.

Required Readings

  • Understanding Health Insurance, Chapter 6, “ICD-10-CM Coding,” pp. 170-190.
  • ICD-10-CM Neoplasm Table
  • ICD-10-CM Table of Drugs and Chemicals
  • ICD-10-CM Official Coding Guidelines for Coding and Reporting 2016, Section I.C.2

Chapter 6

ICD-10-CM Tables

There are two tables in the ICD-10-CM: the Neoplasm table and the Table of Drugs and Chemicals. Both of these tables contain information to help coders code special cases.

Neoplasm Table

Neoplasms are new growths, or tumors, in which cell reproduction is out of control. For coding purposes, the provider should specify whether the tumor is benign (noncancerous, nonmalignant, noninvasive) or malignant (cancerous, invasive, capable of spreading to other parts of the body).

It is highly advisable that neoplasms be coded directly from the pathology report; however, until the diagnostic statement specifies whether the neoplasm is benign or malignant, coders should code the patient’s sign (e.g., breast lump) or report a subcategory code from the “unspecified nature” column of the documented site using the Index to Diseases Neoplasm table.

The table headings for the Neoplasm table are the following:

  • Primary Malignancy (the original tumor site)
  • Secondary Malignancy (the tumor has spread to a secondary site)
  • Ca in Situ (carcinoma in situ, or the malignant tumor is localized)
  • Benign
  • Uncertain Behavior (it is not possible to predict subsequent morphology or behavior)
  • Unspecified (no further indication of the history or nature of the tumor is reflected in the documented diagnosis)

Table of Drugs and Chemicals
This table identifies drugs or chemicals that caused poisonings and adverse effects.

After you have reviewed the tables, click the link to play a matching game. This game will help you to become more comfortable with the terminology of the tables, and will prepare you for the graded quiz.

Drag-and-Drop Matching

Neoplasm Table Guidelines

The Neoplasm table has its own set of guidelines. After reading through the guidelines, click the link to play a matching game. This activity will help prepare you for the graded coding assignment.

Guidelines for Tables Matching

ICD-10-CM Exercises

As you complete your required readings, you will see exercises throughout your textbook. These exercises will help you identify important information about the guidelines in ICD-10-CM. They will also help you prepare for the graded quiz.

Complete the following practice exercises are in Understanding Health Insurance, Chapter 6:

  • Exercise 6-4
  • Exercise 6-5

Then click the link to compare the answers to your own work.

Exercise Answers

Coding Practice

To summarize what you have learned, and to prepare for the graded coding assignment, complete the following coding practice activity. Click the link to download a document and practice assigning ICD-10-CM codes according to the guidelines.

Coding Practice

When you're ready, click the link to check answers.

Coding Practice Answers