Insect bite (nonvenomous), left knee, sequela

This code signifies a long-term or late-effect condition resulting from a nonvenomous insect bite that occurred on the patient's left knee. It indicates that the initial injury has resolved, but the patient is still experiencing residual symptoms or complications directly attributable to that past bite. Examples include chronic scarring, persistent itching, or localized skin changes.

Apply this code when documenting a patient presenting with a current condition that is a direct consequence of a nonvenomous insect bite to the left knee, and the acute phase of the bite has passed. This is appropriate for follow-up encounters where the sequela is being treated or evaluated. It should be used as a secondary diagnosis following the primary condition being treated.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela being treated (e.g., chronic dermatitis, scar).
• Ensure documentation clearly links the current condition to a past nonvenomous insect bite on the left knee.
• Verify that the encounter is for the sequela, not the acute bite, which would use an acute injury code.