Corrosion of first degree of right ear, sequela

This code signifies a first-degree corrosion (chemical burn) affecting any part of the right ear, excluding the eardrum, where the acute injury has healed but residual effects or complications persist. First-degree corrosions typically involve only the epidermis, presenting as redness and mild pain without blistering. The "sequela" designation indicates that this code is used for late effects of the original injury.

Use this code when documenting a patient presenting with a long-term complication or residual condition directly resulting from a past first-degree chemical burn to the right outer or middle ear (excluding the tympanic membrane). Examples include persistent discoloration, scarring, or sensitivity in the affected area after the initial burn has resolved. This code is appropriate when the initial injury is no longer active but its lasting impact is being treated or evaluated.

• Always assign an external cause code (V00-Y99) in conjunction with this code to describe the circumstances of the corrosion.
• Ensure the documentation clearly specifies "first degree" and the "right ear" (excluding the eardrum) as the affected site.
• The "S" seventh character indicates a sequela, meaning this code is for complications or conditions arising after the acute phase of the injury has passed.