Insect bite (nonvenomous) of left back wall of thorax, init

This code signifies a non-venomous insect bite located specifically on the left posterior aspect of the chest wall. It indicates that this is the first time the patient is being treated for this particular injury.

Apply this code when a patient presents with a bite from a non-poisonous insect, such as a mosquito or ant, on their left upper back or flank area. This is appropriate for the initial evaluation and treatment of the bite.

• Ensure the documentation specifies "nonvenomous" and the precise location on the left back wall of the thorax.
• Confirm this is the patient's first encounter for this specific injury; subsequent encounters will use a different seventh character.
• Do not use for bites from venomous insects (e.g., spiders, scorpions) or for bites on other body regions.