S66.229A
ICD-10-CMLaceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter
This code signifies a tear or cut of the extensor muscle, its surrounding fascia, or the extensor tendon specifically located in an unspecified thumb, occurring at the wrist or hand level. This injury involves the structures responsible for extending (straightening) the thumb.
Apply this code for acute injuries where the extensor mechanism of the thumb, at the wrist or hand, has been lacerated. This includes open wounds that directly sever these tissues, often due to sharp objects or trauma. It is used for the initial treatment of such an injury.
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