A: Many thanks to Terri and DeDe for their comments. Terri’s code is correct and DeDe points out the importance of noting all the guidelines included in the dictionary.
The dictionary is somewhat misleading the way it is currently written. The implication in the bolded boxed text is that if there is injury to the femoral head it should be coded under femur, but if it is only dislocated you should use the hip codes. For a femoral head dislocation the correct code is found under Hip. By definition, the only way you can dislocate a hip is to take the head of the femur out of the socket. Therefore, the correct code would be 850610.2. If you know whether or not the articular cartilage is involved, you can go down to one of the two more specific codes listed below 850610.2.