Convert to ICD-10-CM: 
V12.40 converts approximately to:
- 2015/16 ICD-10-CM Z86.69 Personal history of other diseases of the nervous system and sense organs
 ICD-9-CM Volume 2 Index entries containing back-references to 
V12.40:
- History (personal) of nervous system disorder V12.40 nervous system disorder V12.40