Question regarding this code
Sorry if not allowed, but the book really doesnt explain well.
Im working on the study guide for 26, and theres a question about astigmatism in here.
it says its a cat 1 astigmatism in the left eye, corrected with glasses. right eye normal.
the answer key says its codes H52.222 to code the astigmatism on its own, but also H54.52A1 to code that the other eye is normal.
The wording on the ICD book makes no sense to me, especially on how we get the A code, since the section says A- normal vision of the left eye. I understand the 1, for cat 1, but again ! specifies its cat 1 of the RIGHT eye, specifically. and to apply the appropriate codes to all of 54.4 codes.
Can someone dumb this down for me because im genuinely not understanding that. Is it having us code the A because glasses correct the issue? If so, still why the 1 since the RIGHT eye is the normal one, LEFT is the impaired one?