Blister (nonthermal), left lower leg, initial encounter

This code signifies a non-burn related blister located on the left lower leg. This type of blister is typically caused by friction, pressure, or other mechanical trauma, rather than heat or chemical exposure. It indicates the first time this specific injury is being treated.

Apply this code when documenting a patient presenting with a new blister on their left lower leg that is not due to a thermal burn. Common scenarios include blisters from ill-fitting shoes, prolonged pressure, or repetitive rubbing against clothing or equipment.

• Ensure the documentation clearly specifies "left lower leg" and confirms the blister is nonthermal.
• Verify that this is indeed the initial encounter for this specific blister. Subsequent care would require a different seventh character.
• Distinguish from thermal burns (T20-T32) and contact dermatitis (L23-L25) which can also present with blistering.