Blister (nonthermal) of flank, initial encounter

This code signifies a non-burn related blister located on the flank region of the body. These blisters are typically caused by friction, pressure, or other mechanical forces rather than heat or chemical exposure.

Apply this code for the initial treatment of a patient presenting with a blister on their side, between the ribs and hip, that is not due to a burn. This is appropriate for conditions like friction blisters from clothing or footwear, or pressure-induced blisters.

• Ensure the blister is explicitly documented as nonthermal.
• Confirm the anatomical location is specifically the flank.
• This "A" suffix indicates an initial encounter for active treatment of the injury.