S66.022D
ICD-10-CMLaceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level, subsequent encounter
This code signifies a tear or cut in the long flexor muscle, its surrounding connective tissue (fascia), and the associated tendon within the left thumb, specifically at the wrist or hand level. This injury impairs the thumb's ability to bend or grasp.
Apply this code when documenting follow-up care for a patient who previously sustained a laceration to the long flexor structures of the left thumb. This includes encounters for wound care, physical therapy, cast changes, or monitoring healing after the initial treatment.
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