Blister (nonthermal) of left forearm, sequela

This code indicates a non-thermal blister located on the left forearm, representing a late effect or complication of a previous injury or condition. This means the blister is not due to a burn or frostbite, but rather a residual issue from an earlier trauma or disease process.

This code is appropriate when documenting a patient presenting with a non-thermal blister on their left forearm that is a long-term consequence of a prior injury or medical event. It should be used when the original acute injury or condition has resolved, but this blister remains as a sequela.

• Always ensure documentation clearly links the blister to a previous injury or condition as a sequela.
• Do not use this code for acute, current non-thermal blisters; those would be coded with an acute injury code.
• Verify the laterality (left forearm) is explicitly stated in the clinical notes.