In this view of ICD-10-CM codes, we have navigated to the 4th digit codes for myocardial infarction. Note that:
I21.0 has a green light, indicating more codes await at the next "intersection".
Clicking the green light or the [5] "shift" button will drive you to the next intersection of codes.
I21.3 and I21.4 have red lights indicating this is the end of the road. These codes are billable if their description describes the patient's condition.
The gray "shft" buttons [6][7] indicate that no codes are available at these intersections.