Which of the following is NOT included as an option within ICD-10-CM codes?

The choice of non-existent codes is correct because ICD-10-CM codes are carefully constructed and follow a defined structure that includes specific codes for various medical conditions, encounters, and situations. Each code corresponds to a particular diagnosis or type of encounter, and thus there cannot be codes that simply do not exist. The ICD-10-CM coding system is designed to be comprehensive and to provide a classification for nearly all conceivable medical scenarios.

Initial encounter codes and subsequent encounter codes are important components of the coding system that indicate the timing of the treatment in relation to the patient's injury or condition. Initial encounter codes are used when a patient is receiving active treatment for a condition for the first time, while subsequent encounter codes are used for follow-up visits during the course of treatment. Similarly, injuries that are specifically coded refer to codes that are designated for various categories of injuries, which are clearly defined within the classification.

The coding system aims to facilitate accurate clinical documentation and health statistics, ensuring every encounter and diagnosis is accounted for in a structured manner while providing clear guidelines for coders and healthcare professionals.