Injury of median nerve at upper arm level, left arm, sequela

This code signifies a long-term or residual effect resulting from a previous injury to the median nerve in the left upper arm. This could manifest as persistent weakness, sensory deficits (numbness, tingling), or pain in the distribution of the median nerve, affecting the thumb, index, middle, and radial half of the ring finger, and associated muscles. The original acute injury has resolved, but its lasting consequences are now being addressed.

Use this code when documenting the ongoing management of a patient experiencing chronic symptoms directly attributable to a past median nerve injury in the left upper arm. This applies to follow-up encounters where the sequelae, rather than the acute injury, are the primary focus of care. Examples include persistent carpal tunnel-like symptoms or thenar atrophy years after a humeral fracture that involved the median nerve.

• Ensure documentation clearly links the current symptoms to a previous median nerve injury.
• Always use this "S" (sequela) character for conditions where the acute phase of the injury has passed.
• Do not use this code for acute or initial encounters for the injury itself; refer to the appropriate acute injury code.