Which are used in the icd-10-cm index to diseases and injuries to enclose nonessential modifiers that may be present or absent from the physician's statement of a disease?

parentheses

Explanation:

ICD-10-CM stands for International Classification of Diseases, Tenth Revision, Clinical Modification.ICD-10-CM is used by the physicians along with other healthcare professionals to provide codes and classification to the various diagnoses, procedures, and symptoms concerning the records maintained in the hospitals of the United States. Nonessential modifiers are the supplementary words that may or may not be present in a physician's statement of disease however, these modifiers do not affect the code number that is assigned to it. The non- essential modifiers that may be present or absent from the physician's statement of the disease are enclosed under parentheses according to the ICD-10-CM Index to Diseases and Injuries.This parentheses is used in both indices as well as tabular lists.