Insect bite (nonvenomous) of right thumb, initial encounter

This code identifies a nonvenomous insect bite affecting the right thumb. It signifies the initial presentation and treatment of the injury, indicating that the patient is being seen for the first time for this specific bite.

Apply this code when a patient presents with a bite on their right thumb from a non-poisonous insect, such as a mosquito, fly, or ant. This is appropriate for the initial visit where the bite is diagnosed and initial management, like cleaning or symptomatic relief, is provided.

• Ensure the documentation clearly specifies the right thumb as the affected site and confirms the nonvenomous nature of the insect bite.
• The "A" seventh character indicates an initial encounter; use subsequent characters for follow-up care or sequelae.
• Do not use this code for bites from venomous insects (e.g., spiders, scorpions) or for allergic reactions to insect bites without a clear bite lesion.