Insect bite (nonvenomous) of left upper arm, sequela

This code signifies a lasting effect or complication resulting from a nonvenomous insect bite on the patient's left upper arm. This could include chronic skin changes, persistent scarring, or long-term nerve irritation that developed after the initial bite healed. It indicates that the original injury is no longer acute but has left a residual condition.

Use this code when documenting a patient presenting with a current condition directly attributable to a past nonvenomous insect bite on their left upper arm. This applies to follow-up encounters where the sequela is being managed, such as scar revision, treatment for chronic dermatitis, or ongoing pain management related to the old bite. Do not use for acute bites.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated (e.g., L90.5 for scar conditions).
• Ensure documentation clearly links the current condition to a previous nonvenomous insect bite on the left upper arm.
• Verify that the encounter is for the management of the residual effect, not the initial injury.