Final answer:
NEC stands for 'Not Elsewhere Classified' in the Alphabetic Index of the ICD, which is true, indicating it applies to specified conditions lacking a specific code.
Step-by-step explanation:
In the medical coding context, particularly within the Alphabetic Index of the International Classification of Diseases (ICD), the abbreviation NEC stands for 'Not Elsewhere Classified'. This designation is used when a specific condition or disease does not have a dedicated code in the classification system. Essentially, it is used for conditions that are specified as to the nature of the disease or condition but do not have a specific code assigned in the ICD. Therefore, the statement that NEC represents other specified is A. True.