Corrosion of second degree of lip(s), sequela

This code signifies a second-degree chemical burn to the lips, where the initial injury has healed, and the patient is now experiencing a residual effect or complication from that past corrosion. This could include scarring, altered sensation, or functional impairment resulting from the original chemical exposure.

Use this code when documenting a patient presenting with a current problem directly attributable to a second-degree chemical burn of the lips that occurred in the past. This is appropriate for follow-up visits addressing long-term sequelae such as contractures, chronic pain, or cosmetic deformities.

• Always assign an external cause code (V00-Y99) to describe the circumstances of the corrosion, if known and applicable.
• Ensure documentation clearly links the current condition to the past second-degree corrosion of the lips.
• Do not use this code for acute or active second-degree corrosion; instead, use the appropriate acute T20.22XA code.