Blister (nonthermal) of right back wall of thorax, init

This code signifies a non-burn related fluid-filled lesion on the right posterior chest wall. This blister is not caused by heat, chemicals, or radiation, but rather by other mechanisms such as friction or pressure. It represents the initial presentation or active treatment phase of this specific injury.

Use this code when documenting a patient presenting with a newly identified or currently treated blister on their right back, not caused by thermal injury. This would include blisters resulting from prolonged pressure, ill-fitting clothing, or repetitive rubbing against the skin. It is appropriate for the first encounter for this specific injury.

• Ensure documentation clearly specifies the blister is on the right back wall of the thorax and is nonthermal.
• Verify the encounter is indeed the initial one for this specific injury; subsequent encounters would require a different seventh character.
• Distinguish this from blisters caused by burns (T20-T32 series) or other specific etiologies.