Blister (nonthermal) of left index finger, subs encntr

This diagnosis code indicates a non-heat related fluid-filled lesion on the left index finger. It specifically denotes that the patient is presenting for follow-up care or treatment of this blister after the initial encounter.

Apply this code when a patient returns for subsequent management of a blister on their left index finger that was not caused by a burn. This includes scenarios such as wound checks, dressing changes, or further evaluation of healing.

• Ensure the documentation clearly specifies the left index finger and a non-thermal etiology.
• Verify that the encounter is not the initial treatment for the blister; otherwise, an initial encounter code would be more appropriate.
• Always check for any associated infections or complications that may require additional codes.