Bit/stung by nonvenom insect & oth nonvenom arthropods, init

This code signifies an injury resulting from a bite or sting by an insect or other arthropod that does not produce venom. Such encounters typically cause localized skin reactions, including pain, itching, redness, and swelling, without systemic toxic effects.

This code is appropriate for documenting the initial presentation and treatment of patients who have sustained bites or stings from common nonvenomous insects like mosquitoes, fleas, ants, or spiders (if nonvenomous). It is used when the patient first seeks medical attention for the injury.

• Always assign a seventh character to indicate the encounter type (A for initial, D for subsequent, S for sequela).
• Consider additional codes for specific symptoms (e.g., pruritus, cellulitis) if documented.
• Distinguish carefully from venomous bites/stings, which are coded differently.