Convert to ICD-10-CM: 
788.7 converts approximately to:
- 2015/16 ICD-10-CM R36.0 Urethral discharge without blood
Or:
 - 2015/16 ICD-10-CM R36.9 Urethral discharge, unspecified
 
 ICD-9-CM Volume 2 Index entries containing back-references to 
788.7:
- Discharge
penile 788.7
urethral 788.7
 - Urethrorrhea 788.7