Convert ICD-10 Code M45.5 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M45.5 Ankylosing spondylitis of thoracolumbar region		720.0 Ankylosing spondylitis
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

ICD-10 to ICD-9 crosswalk for code M45.5 - ankylosing spondylitis of thoracolumbar region based on the most recent General Equivalence Mappings (GEMS) information.