Blister (nonthermal), left foot, initial encounter

This code signifies a non-burn related fluid-filled lesion on the left foot. These blisters typically arise from friction, pressure, or other mechanical trauma, rather than heat or chemical exposure. The "initial encounter" designation indicates this is the first time the patient is receiving active treatment for this specific condition.

Apply this code when documenting a patient presenting with a blister on their left foot that is not due to a burn. This would include blisters caused by ill-fitting shoes, prolonged walking, or repetitive rubbing. It is appropriate for the initial visit where the blister is diagnosed and treatment plans are established.

• Ensure the documentation clearly specifies the left foot and confirms the blister is nonthermal.
• Verify that this is indeed the initial encounter for this specific blister; subsequent encounters will require a different seventh character.
• Consider additional codes for any underlying conditions or complications, such as infection, if present.