What training could you recommend to the coders to prevent this error from occuring in the future?

Review the scenarios 4.0, 4.20, and 4.36 (located in HIM Case Studies textbook). Use your textbooks and/or Internet research to help you thoroughly answer the following questions. Submit your answers to 4.0, 4.20, and 4.36 in a word document or pdf. References should be cited in APA format. Your answers will be graded in accordance with the attached rubric.
Case Study 4.0
1. Identify the issue with the codes/data.
2. What should the correct code(s) be? Why?
3. After changing the code(s), what impact might this have on the MS-DRG? Is reassignment of MS-DRH necessary or unneccesary to comply with coding standards? Why?
4. If reassignment is necessary, what is the correct MS-DRG? Why?
5. If reassignment is necessary, evaluate the impact this could have on billing.
6.. What training could you recommend to the coders to prevent this error from occuring in the future?