Which coding should be used for subsequent encounters following an insect bite?

The correct coding choice for subsequent encounters following an insect bite is best represented by the code for "Bitten by nonvenomous insect, subsequent encounter." This code indicates an ongoing case where the patient is being seen for follow-up care related to an insect bite that is not venomous.

Subsequent encounter codes are specifically designed to capture situations where a patient returns for ongoing care after the initial treatment has occurred. This is crucial for assessing the progression of the injury, monitoring for infections, or managing any related symptoms or complications. The designation of a subsequent encounter informs healthcare providers, insurers, and health information systems that the patient has already received initial treatment and is now returning for additional services.

In contrast, other options like the initial encounter code indicate that treatment is occurring for the first time, while the cellulitis code is specific to an infection that must be directly related to the initial condition rather than the subsequent follow-up treatment for the insect bite itself. Therefore, D highlights the scenario accurately by reflecting the ongoing treatment and care in response to a nonvenomous insect bite, making it the correct choice for such a situation.