Insect bite of unsp back wall of thorax, sequela

This code signifies a nonvenomous insect bite affecting an unspecified area of the back wall of the thorax, where the initial injury has resolved but residual effects or complications persist. It indicates a long-term consequence of the bite rather than the acute injury itself.

Apply this code when documenting a patient presenting with a sequela, such as chronic dermatitis, scarring, or persistent paresthesia, directly attributable to a past nonvenomous insect bite on their back. This is appropriate after the acute phase of the bite has passed and the current encounter addresses the lasting effects.

• Ensure the documentation clearly states the bite was nonvenomous and located on the back wall of the thorax.
• Only use the "S" (sequela) seventh character when the current encounter is for the long-term effects, not the initial injury.
• Code any specific sequela (e.g., chronic pruritus, scar) in addition to this code to provide a complete clinical picture.