Title: Module 10 Similarities and Differences
Course: Introduction to Coding and Classification Systems > Section: Module 10: Similarities and Differences Between ICD-10-CM and ICD-9-CM

Introduction

Now that you have studied the background information on ICD-10-CM coding principles and conventions and how it differs from ICD-9-CM we will cover Chapters 13, 14, 15, and 16. As you go through the ICD-10-CM modules, you will see that the organization of your textbook is very similar to your ICD-9-CM book. Therefore, we will cover the same topics just utilizing the Ingenix/Optum Official Code Draft set for ICD-10-CM. You will also have access to 3M and Quantim coding systems online which has the books available there for your use and practice if you do not have the hard copy. (See Tools and Resources for more information.)

NOTE: If you want the hard copy of the Official ICD-10-CM coding manual you will need to purchase it from www.shopingenix.com/ICD10

There are few situations when a symptom code for Chapter 18 is used as a principal diagnosis in the hospital setting. On the other hand, for outpatients, the symptom code is used often as the reason for the encounter. Codes from Chapter 18 are assigned as secondary diagnosis only when the sign or symptom is not integral to a condition. Codes for symptoms, and ill-defined conditions from chapter 18 of ICD-10-CM manual cannot be used as principal diagnoses or reasons for outpatient encounters when related diagnoses have been established. It is very important to know that codes from Chapter 1 Infectious and Parasitic Diseases in ICD-10-CM take precedence over codes from other chapters. It is also important to know the terms and their definitions and instructions for proper coding:

- Bacteremia
- Sepsis
- Septic Shock
- Septicemia
- SIRS

Chapters 15 Endocrine System and 16 Mental Disorders in your handbook require studying the guidelines for proper code assignment. Diabetes without further specification as to whether it is Type 1 or Type 2 is coded to Type 2 Diabetes Mellitus E11. Check out how to code Gestational Diabetes O24.4

Course Outcomes

- Recognizes the basic coding steps for coding medical diagnosis in both ICD-9-CM and ICD-10-CM. (1)
- Comprehends the basic coding guidelines established by the American Hospital Association for both ICD-9-CM and ICD-10CM. (2)
- Converts medical documentation into both ICD-9-CM and ICD-10-CM codes. (3)
- Interprets medical documentation to assign accurate codes for reimbursement of health care services. (4)
- Applies the official coding guidelines to the coding of medical diagnosis for all body systems (circulatory, respiratory, musculoskeletal, urinary, blood-forming organs, reproductive, gastrointestinal, etc.) (5)
- Demonstrates thorough understanding of selection of the principal diagnosis and any secondary diagnosis associated with the episode of care or hospital admission. (6)
- Demonstrates thorough understanding of the proper sequencing of diagnosis codes for maximum reimbursement of the health care services provided. (7)
- Performs accurate diagnosis code assignment for all body systems based upon the documentation provided in the health record. (8)

Objectives

After completing Module 10 you should be able to:

- Explain the difference between a sign and a symptom.
- Determine when to use a code from chapter 18 for a principal diagnosis.
- Determine when to use a code from chapter 18 for an additional diagnosis.
- Code infectious and parasitic diseases.
- Explain the difference between, and be able to code properly, bacteremia, septicemia, SIRS, sepsis, and septic shock.
- Explain how to code for HIV testing, diagnosis and related conditions.
- Code diabetes mellitus properly.
- Code fluid overload due to congestive heart failure.
- Code nutritional disorders such as obesity.
- Code a variety of mental disorders.
- Determine the differences in types of affective disorders.
- Explain the differences between substance abuse and dependence.

Readings and Resources

- Chapters 13, 14, 15, and 16 and completion of all exercises to prepare for Test 10
- Review coding guidelines for signs and symptoms, diabetes, infectious diseases, and mental disorders

Discussion

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Test
The above link takes you to the test page. There are 25 questions worth two points each.