Corrosion of first degree of left ear, sequela

This code signifies a first-degree chemical burn (corrosion) affecting any part of the left outer ear, excluding the eardrum, where the acute injury has healed and residual effects are being treated or evaluated. First-degree burns typically involve only the epidermis, presenting with redness and mild pain without blistering. The "sequela" designation indicates that this code is used for complications or conditions arising as a direct result of the initial corrosion, long after the initial injury occurred.

Use this code when documenting or billing for the long-term management of issues stemming from a first-degree chemical burn to the left outer ear. This includes scenarios such as persistent skin discoloration, scarring, or sensitivity that are directly attributable to the original corrosive exposure. It is appropriate when the patient is presenting for follow-up care related to these lasting effects, not for the initial treatment of the acute burn.

• Ensure the documentation clearly states the burn was due to a corrosive substance and affected the left ear.
• Verify that the burn is explicitly documented as first-degree and that the encounter is for a sequela, not the acute injury.
• Always assign an external cause code (e.g., from Chapter 20) in conjunction with this code to fully describe the circumstances of the injury.