Using the techniques described in this chapter carefully read through the case study and determine the most accurate ICD-10-CM code(s) and external cause code(s) if appropriate. Remember, check the chapter specific, sub-chapter specific and category specific notations within the Tabular list.

I have one of the answers It is E88.42 but there is another code and I don't know what it is. Help?

Angel Dunbar, a 27-year-old male, presents to see his physician, Dr. Davison, with the complaints of difficulty breathing, muscle weakness, and fatigue. Following a complete examination, Dr. Davison notes ataxia and sudden muscle spasms in Angel’s legs. The lab results are positive for lactic acidosis. CSF results show elevated protein and the muscle biopsy is positive for ragged red fiber. Angel is diagnosed with MERRF syndrome.

Be sure to list the codes, one code per box, in the correct order, from top to bottom. Capitalization, punctuation, and spacing can impact whether or not your answer is correct. Follow coding best practices.

What is/are the correct diagnosis code(s)?