Answer:
a. conventions
Explanation:
ICD-10-CM is the short hand for the for International Classification of Diseases. The 10 stands for Tenth Revision and CM stands for Clinical Modification.
ICD-10-CM uses certain codes to identify health problems and diseases.
ICD-10-PCS is the short hand for the International Classification of Diseases. The ten stands for Tenth Revision and PCS stands for Procedure Coding System.
ICD-10-PCS uses certain codes to identify operating procedures in order to treat illnesses.
They are both laid down by the World Health Organization
