Corrosion of second degree of scalp [any part], sequela

This code signifies a second-degree chemical burn affecting the scalp, specifically indicating a long-term complication or residual effect of the initial injury. It describes damage that has progressed beyond the acute phase, such as scarring, hair loss, or chronic irritation resulting from the corrosive exposure.

Use this code when documenting a patient presenting with a sequela directly attributable to a past second-degree corrosive injury to the scalp. This applies to follow-up encounters where the focus is on managing or evaluating the lasting consequences of the burn, rather than the acute injury itself.

• Always assign an external cause code (V00-Y99) to describe the circumstances of the corrosion.
• Ensure documentation clearly distinguishes between an acute injury and a sequela; "sequela" implies a chronic or late effect.
• Do not use this code for acute second-degree corrosive burns; refer to the acute injury codes in the T20.2- range.