Blister (nonthermal), left lesser toe(s), initial encounter

This diagnosis code indicates the presence of a fluid-filled lesion on one or more of the smaller toes of the left foot, resulting from causes other than heat or cold exposure. These blisters are typically caused by friction, pressure, or chemical irritants, leading to a separation of skin layers and fluid accumulation.

Use this code for a patient presenting with a newly identified blister on their left second, third, fourth, or fifth toe, where the blister is not due to burns or frostbite. This applies to initial evaluations and treatments for such a lesion.

• Ensure documentation specifies "left" and "lesser toe(s)" to support this code.
• Verify the blister's etiology is non-thermal; if thermal, a different code category is required.
• The "A" suffix indicates an initial encounter for this specific injury. Subsequent encounters will require different seventh characters.