What icd-10 codes due to herniation of nucleus pulposus.

Written under the 2018 ICD-10-CM Diagnosis Code Disorder of Disc M51.9 - Unspecified thoracic, thoracolumbar and lumbosacral intervertebral disc disorder: 
Neuritis (rheumatoid) M79.2due to herniation, nucleus pulposus M51.9
The (ICD-10-CM) or  International Classification of Diseases Clinical Modification, Tenth Revision, is a system utilized by physicians and other healthcare providers to classify and code all diagnoses, symptoms, and procedures recorded in line with hospital care in the United States.

Answer mauritania is in the northwestern part of african, meaning its in the western hemisphere, and how do i know/ the map showed me so; ///: )