Insect bite (nonvenomous) of left ear, initial encounter

This diagnosis code indicates a nonvenomous insect bite affecting the left ear. This typically involves localized skin irritation, itching, or minor swelling resulting from an insect's bite or sting, without the introduction of venom.

Apply this code when documentation specifies a nonvenomous insect bite to the left ear, such as from a mosquito, fly, or ant. This code is appropriate for the initial encounter for treatment of the acute injury. Supporting documentation should clearly identify the anatomical site and the nonvenomous nature of the bite.

• Ensure the documentation specifies "left ear" and "nonvenomous" to differentiate from other ear injuries or venomous bites.
• Verify that this is the initial encounter for the bite; subsequent encounters would require a different seventh character.
• Do not use this code for bites from venomous insects (e.g., spiders, scorpions, bees, wasps) which have specific T-codes.