Corrosion of first degree of upper back, sequela

This code signifies a first-degree burn, specifically a corrosion, affecting the upper back, where the acute injury has healed and the patient is now presenting for treatment of a residual condition or complication directly resulting from that past injury. A first-degree corrosion involves only the epidermis, causing redness and mild pain without blistering.

Apply this code when documenting a patient encounter for a long-term effect or complication stemming from a healed first-degree corrosion of the upper back. Examples include persistent discoloration, scarring, or sensitivity in the affected area. This code is appropriate when the initial injury is no longer acute and the focus of care is on the sequela.

• Ensure the documentation clearly indicates a healed injury and the current encounter addresses a residual effect.
• Do not use this code for acute first-degree corrosions; instead, select an acute burn code.
• Always include an external cause code (V00-Y99) to describe the circumstances of the original corrosion, if known.