Convert to ICD-10-CM: 
378.13 converts approximately to:
- 2015/16 ICD-10-CM H50.131 Monocular exotropia with V pattern, right eyeOr: 
- 2015/16 ICD-10-CM H50.132 Monocular exotropia with V pattern, left eye
 ICD-9-CM Volume 2 Index entries containing back-references to 
378.13: