S66.590S
ICD-10-CMOther injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level, sequela
This code signifies a long-term complication or late effect stemming from a previous injury to the intrinsic muscles, fascia, or tendons of the right index finger. This injury occurred specifically at the wrist or hand level, affecting the structures responsible for fine motor control within the finger itself. The "sequela" designation indicates that the original acute injury has resolved, but its lasting effects, such as chronic pain, stiffness, or functional impairment, are now being treated.
Use this code when documenting a patient presenting with a current condition that is a direct consequence of a past injury to the intrinsic muscles, fascia, or tendons of the right index finger. This applies when the initial acute injury has healed, but residual symptoms or functional deficits persist and require ongoing medical attention. Examples include chronic tenosynovitis, scar tissue formation limiting range of motion, or persistent weakness following a laceration or crush injury to the right index finger's intrinsic structures at the hand/wrist level.
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