Corrosion of first degree of nose (septum), sequela

This code signifies a first-degree chemical burn, also known as a corrosion, affecting the nasal septum. A first-degree corrosion involves only the outermost layer of the skin or mucous membrane, typically presenting with redness and mild pain without blistering or tissue loss. The "sequela" designation indicates that this code is used for the late effects or complications of the initial injury, after the acute phase has passed.

Use this code when documenting a long-term consequence or residual condition stemming from a first-degree chemical burn to the nasal septum. This could include persistent redness, scarring, or other chronic issues directly attributable to the original injury. It is appropriate when the acute injury has healed, but its lasting impact is still being addressed.

• Always assign this code as a secondary diagnosis, following the code for the primary condition or sequela being treated.
• Ensure documentation clearly states the burn was chemical (corrosion) and involved the nasal septum, with a first-degree classification.
• The "S" in the 7th character indicates sequela; do not use for initial encounters or subsequent encounters for active treatment of the acute injury.