S42.266B
ICD-10-CMNondisplaced fracture of lesser tuberosity of unspecified humerus, initial encounter for open fracture
This code signifies a break in the lesser tuberosity of the humerus, the smaller bony prominence on the front of the upper arm bone, where the subscapularis muscle attaches. The fracture is "nondisplaced," meaning the bone fragments are still in their normal anatomical alignment, and it is an "open fracture," indicating a break in the skin overlying the fracture site.
Use this code for the initial treatment of a patient presenting with a nondisplaced open fracture of the lesser tuberosity of the humerus, where the specific side (left or right) is not documented. This applies to the first encounter for active treatment of the injury.
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