Corrosion of unspecified degree of right ear, sequela

This code indicates a long-term complication or late effect resulting from a corrosive injury to the right ear, excluding the eardrum. The original burn's severity is not specified, and the sequela could manifest as scarring, chronic inflammation, or functional impairment.

Apply this code when documenting a current condition that is a direct consequence of a past corrosive chemical burn to the right outer or middle ear. This is appropriate for follow-up encounters addressing residual problems, even if the original injury has healed.

• Always sequence this sequela code after the code for the specific late effect being treated (e.g., scar, chronic otitis externa).
• Ensure documentation clearly links the current ear condition to a previous corrosive burn.
• Do not use this code for acute corrosive injuries; use the appropriate acute T20.x codes instead.