What ICD-10-CM code is reported for an initial encounter of a reaction to anesthesia?

The code T88.59XA is the appropriate ICD-10-CM code used to report an initial encounter for a reaction to anesthesia. The “T88.5” code series is designated for complications and reactions following procedures, specifically related to an adverse reaction to anesthesia, which encompasses a variety of symptoms or issues arising post-anesthesia administration.

The significance of the "XA" indicates that this is an initial encounter for the condition. In ICD-10 coding, the seventh character is essential as it specifies the type of encounter: "A" stands for an initial encounter, while different characters denote subsequent encounters or different types of care. Specifically, the other suffixes—“B,” “C,” and “D”—are used for subsequent encounters for the same condition, therefore not applicable for reporting the initial occurrence. This makes T88.59XA the most accurate code for capturing the initial response to anesthesia, ensuring proper documentation and communication in medical records.