Insect bite (nonvenomous) of breast, left breast, subs

This code signifies a nonvenomous insect bite located on the left breast. It indicates that the patient is presenting for follow-up care or treatment of a previously diagnosed bite, rather than the initial injury. The bite is not from a venomous insect like a spider or scorpion.

This code is appropriate for encounters where a patient returns for evaluation of healing, infection, or other complications related to a nonvenomous insect bite on their left breast. It would be used for subsequent visits after the initial diagnosis and treatment. Examples include follow-up for wound care, antibiotic treatment, or persistent itching.

• Ensure the documentation clearly specifies "left breast" and "nonvenomous" to support this code.
• Confirm the encounter is for follow-up care, not the initial presentation, to justify the "D" seventh character.
• Pair with an external cause code (W57.XXXA) to identify the type of insect and activity at the time of the bite, if known.