Note31  Use the following fifth-digit subclassification with categories 807.0-807.1:

                        0          rib(s), unspecified
                        1          one rib
                        2          two ribs
                        3          three ribs
                        4          four ribs
                        5          five ribs
                        6          six ribs
                        7          seven ribs
                        8          eight or more ribs
                        9          multiple ribs, unspecified

Note32  Use the following fifth-digit subclassification with categories 800, 801, 803, and 804:

                        0          unspecified state of consciousness
                        1          with no loss of consciousness
                        2          with brief [less than one hour] loss of consciousness
                        3          with moderate [1-24 hours] loss of consciousness
                        4          with prolonged [more than 24 hours] loss of consciousness and
                                    return to pre-existing conscious level
                        5          with prolonged [more than 24 hours] loss of consciousness,
                                    without return to pre-existing conscious level

Use fifth-digit 5 to designate when a patient is unconscious and dies before regaining consciousness, regardless of the duration of the loss of consciousness

                        6          with loss of consciousness of unspecified duration
                        9          with concussion, unspecified