Blister (nonthermal), unspecified lower leg, sequela

This code describes a non-thermal blister located on an unspecified part of the lower leg, indicating that the blister is a residual effect or complication of a previous injury or condition. It signifies that the original acute phase of the blister has passed, and the current encounter addresses a long-term consequence.

Use this code when documenting a patient presenting with a blister on the lower leg that is not due to heat or cold exposure, and the encounter is for the management of a sequela. This applies when the blister is a chronic issue or a lasting effect of an earlier, resolved condition, and the specific location on the lower leg is not further specified.

• Always use an additional code to identify the underlying cause of the sequela, if known.
• Ensure documentation clearly states the blister is non-thermal and that the encounter is for a sequela, not an acute injury.
• Avoid using this code if a more specific anatomical site on the lower leg (e.g., ankle, foot) is documented.