| S04.811 | Injury of olfactory [1st ] nerve, right side | NON-BILLABLE CODE |
| S04.811A | Injury of olfactory [1st ] nerve, right side, initial encounter | BILLABLE CODE |
| S04.811D | Injury of olfactory [1st ] nerve, right side, subsequent encounter | BILLABLE CODE |
| S04.811S | Injury of olfactory [1st ] nerve, right side, sequela | BILLABLE CODE |
| S04.812 | Injury of olfactory [1st ] nerve, left side | NON-BILLABLE CODE |
| S04.812A | Injury of olfactory [1st ] nerve, left side, initial encounter | BILLABLE CODE |
| S04.812D | Injury of olfactory [1st ] nerve, left side, subsequent encounter | BILLABLE CODE |
| S04.812S | Injury of olfactory [1st ] nerve, left side, sequela | BILLABLE CODE |
| S04.819 | Injury of olfactory [1st ] nerve, unspecified side | NON-BILLABLE CODE |
| S04.819A | Injury of olfactory [1st ] nerve, unspecified side, initial encounter | BILLABLE CODE |
| S04.819D | Injury of olfactory [1st ] nerve, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.819S | Injury of olfactory [1st ] nerve, unspecified side, sequela | BILLABLE CODE |
