Convert to ICD-10-CM: 
924.11 converts approximately to:
- 2015/16 ICD-10-CM S80.00XA Contusion of unspecified knee, initial encounter
 ICD-9-CM Volume 2 Index entries containing back-references to 
924.11:
- Contusion (skin surface intact) 924.9  knee 924.11 knee 924.11
  popliteal space (see also Contusion, knee) 924.11 popliteal space (see also Contusion, knee) 924.11