Unsp inj unsp musc/tend at low leg level, left leg, sequela

This code signifies a long-term consequence or complication resulting from an unidentifiable injury to the muscles and/or tendons in the lower portion of the left leg. The original injury's specific nature (e.g., strain, tear, contusion) is not documented, and the affected muscle(s) or tendon(s) are also not specified.

Apply this code when documenting a sequela (late effect) of a past, uncharacterized muscle or tendon injury in the left lower leg. This is appropriate when the initial injury's details are unknown or no longer relevant, but its lasting impact is being treated or evaluated.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Avoid using this code if the specific muscle(s) or tendon(s) and the nature of the injury are known; instead, use a more specific S86 code with the appropriate seventh character.
• Ensure documentation clearly supports the "sequela" nature of the condition, indicating it's a residual effect of a previous injury.