Blister of bilateral front wall of thorax, sequela

This code signifies a persistent or late effect of a non-thermal blister located on both sides of the anterior chest wall. It indicates that the blister itself is no longer acute, but its residual effects, such as scarring, chronic pain, or altered skin texture, are still present and clinically significant. This is distinct from an acute blister, which would be coded differently.

This code is appropriate when documenting a patient presenting with sequelae from a previously healed or resolved non-thermal blister on the bilateral front wall of the thorax. Examples include follow-up visits for scar tissue management, chronic discomfort related to the previous blister site, or persistent skin changes after the initial injury has passed its acute phase.

• Always sequence this sequela code after the code for the nature of the sequela (e.g., scar, chronic pain).
• Ensure the documentation clearly specifies "bilateral front wall of thorax" and "non-thermal" to support this specific code.
• Verify that the blister is no longer acute; if it's an active blister, a different code from the T20-T25 series would be more appropriate.