| S04 | Injury of cranial nerve | NON-BILLABLE CODE |
| S04.0 | Injury of optic nerve and pathways | NON-BILLABLE CODE |
| S04.01 | Injury of optic nerve | NON-BILLABLE CODE |
| S04.011 | Injury of optic nerve, right eye | NON-BILLABLE CODE |
| S04.011A | Injury of optic nerve, right eye, initial encounter | BILLABLE CODE |
| S04.011D | Injury of optic nerve, right eye, subsequent encounter | BILLABLE CODE |
| S04.011S | Injury of optic nerve, right eye, sequela | BILLABLE CODE |
| S04.012 | Injury of optic nerve, left eye | NON-BILLABLE CODE |
| S04.012A | Injury of optic nerve, left eye, initial encounter | BILLABLE CODE |
| S04.012D | Injury of optic nerve, left eye, subsequent encounter | BILLABLE CODE |
| S04.012S | Injury of optic nerve, left eye, sequela | BILLABLE CODE |
| S04.019 | Injury of optic nerve, unspecified eye | NON-BILLABLE CODE |
| S04.019A | Injury of optic nerve, unspecified eye, initial encounter | BILLABLE CODE |
| S04.019D | Injury of optic nerve, unspecified eye, subsequent encounter | BILLABLE CODE |
| S04.019S | Injury of optic nerve, unspecified eye, sequela | BILLABLE CODE |
| S04.02 | Injury of optic chiasm | NON-BILLABLE CODE |
| S04.02XA | Injury of optic chiasm, initial encounter | BILLABLE CODE |
| S04.02XD | Injury of optic chiasm, subsequent encounter | BILLABLE CODE |
| S04.02XS | Injury of optic chiasm, sequela | BILLABLE CODE |
| S04.03 | Injury of optic tract and pathways | NON-BILLABLE CODE |
| S04.031 | Injury of optic tract and pathways, right side | NON-BILLABLE CODE |
| S04.031A | Injury of optic tract and pathways, right side, initial encounter | BILLABLE CODE |
| S04.031D | Injury of optic tract and pathways, right side, subsequent encounter | BILLABLE CODE |
| S04.031S | Injury of optic tract and pathways, right side, sequela | BILLABLE CODE |
| S04.032 | Injury of optic tract and pathways, left side | NON-BILLABLE CODE |
| S04.032A | Injury of optic tract and pathways, left side, initial encounter | BILLABLE CODE |
| S04.032D | Injury of optic tract and pathways, left side, subsequent encounter | BILLABLE CODE |
| S04.032S | Injury of optic tract and pathways, left side, sequela | BILLABLE CODE |
| S04.039 | Injury of optic tract and pathways, unspecified side | NON-BILLABLE CODE |
| S04.039A | Injury of optic tract and pathways, unspecified side, initial encounter | BILLABLE CODE |
| S04.039D | Injury of optic tract and pathways, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.039S | Injury of optic tract and pathways, unspecified side, sequela | BILLABLE CODE |
| S04.04 | Injury of visual cortex | NON-BILLABLE CODE |
| S04.041 | Injury of visual cortex, right side | NON-BILLABLE CODE |
| S04.041A | Injury of visual cortex, right side, initial encounter | BILLABLE CODE |
| S04.041D | Injury of visual cortex, right side, subsequent encounter | BILLABLE CODE |
| S04.041S | Injury of visual cortex, right side, sequela | BILLABLE CODE |
| S04.042 | Injury of visual cortex, left side | NON-BILLABLE CODE |
| S04.042A | Injury of visual cortex, left side, initial encounter | BILLABLE CODE |
| S04.042D | Injury of visual cortex, left side, subsequent encounter | BILLABLE CODE |
| S04.042S | Injury of visual cortex, left side, sequela | BILLABLE CODE |
| S04.049 | Injury of visual cortex, unspecified side | NON-BILLABLE CODE |
| S04.049A | Injury of visual cortex, unspecified side, initial encounter | BILLABLE CODE |
| S04.049D | Injury of visual cortex, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.049S | Injury of visual cortex, unspecified side, sequela | BILLABLE CODE |
| S04.1 | Injury of oculomotor nerve | NON-BILLABLE CODE |
| S04.10 | Injury of oculomotor nerve, unspecified side | NON-BILLABLE CODE |
| S04.10XA | Injury of oculomotor nerve, unspecified side, initial encounter | BILLABLE CODE |
| S04.10XD | Injury of oculomotor nerve, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.10XS | Injury of oculomotor nerve, unspecified side, sequela | BILLABLE CODE |
| S04.11 | Injury of oculomotor nerve, right side | NON-BILLABLE CODE |
| S04.11XA | Injury of oculomotor nerve, right side, initial encounter | BILLABLE CODE |
| S04.11XD | Injury of oculomotor nerve, right side, subsequent encounter | BILLABLE CODE |
| S04.11XS | Injury of oculomotor nerve, right side, sequela | BILLABLE CODE |
| S04.12 | Injury of oculomotor nerve, left side | NON-BILLABLE CODE |
| S04.12XA | Injury of oculomotor nerve, left side, initial encounter | BILLABLE CODE |
| S04.12XD | Injury of oculomotor nerve, left side, subsequent encounter | BILLABLE CODE |
| S04.12XS | Injury of oculomotor nerve, left side, sequela | BILLABLE CODE |
| S04.2 | Injury of trochlear nerve | NON-BILLABLE CODE |
| S04.20 | Injury of trochlear nerve, unspecified side | NON-BILLABLE CODE |
| S04.20XA | Injury of trochlear nerve, unspecified side, initial encounter | BILLABLE CODE |
| S04.20XD | Injury of trochlear nerve, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.20XS | Injury of trochlear nerve, unspecified side, sequela | BILLABLE CODE |
| S04.21 | Injury of trochlear nerve, right side | NON-BILLABLE CODE |
| S04.21XA | Injury of trochlear nerve, right side, initial encounter | BILLABLE CODE |
| S04.21XD | Injury of trochlear nerve, right side, subsequent encounter | BILLABLE CODE |
| S04.21XS | Injury of trochlear nerve, right side, sequela | BILLABLE CODE |
| S04.22 | Injury of trochlear nerve, left side | NON-BILLABLE CODE |
| S04.22XA | Injury of trochlear nerve, left side, initial encounter | BILLABLE CODE |
| S04.22XD | Injury of trochlear nerve, left side, subsequent encounter | BILLABLE CODE |
| S04.22XS | Injury of trochlear nerve, left side, sequela | BILLABLE CODE |
| S04.3 | Injury of trigeminal nerve | NON-BILLABLE CODE |
| S04.30 | Injury of trigeminal nerve, unspecified side | NON-BILLABLE CODE |
| S04.30XA | Injury of trigeminal nerve, unspecified side, initial encounter | BILLABLE CODE |
| S04.30XD | Injury of trigeminal nerve, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.30XS | Injury of trigeminal nerve, unspecified side, sequela | BILLABLE CODE |
| S04.31 | Injury of trigeminal nerve, right side | NON-BILLABLE CODE |
| S04.31XA | Injury of trigeminal nerve, right side, initial encounter | BILLABLE CODE |
| S04.31XD | Injury of trigeminal nerve, right side, subsequent encounter | BILLABLE CODE |
| S04.31XS | Injury of trigeminal nerve, right side, sequela | BILLABLE CODE |
| S04.32 | Injury of trigeminal nerve, left side | NON-BILLABLE CODE |
| S04.32XA | Injury of trigeminal nerve, left side, initial encounter | BILLABLE CODE |
| S04.32XD | Injury of trigeminal nerve, left side, subsequent encounter | BILLABLE CODE |
| S04.32XS | Injury of trigeminal nerve, left side, sequela | BILLABLE CODE |
| S04.4 | Injury of abducent nerve | NON-BILLABLE CODE |
| S04.40 | Injury of abducent nerve, unspecified side | NON-BILLABLE CODE |
| S04.40XA | Injury of abducent nerve, unspecified side, initial encounter | BILLABLE CODE |
| S04.40XD | Injury of abducent nerve, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.40XS | Injury of abducent nerve, unspecified side, sequela | BILLABLE CODE |
| S04.41 | Injury of abducent nerve, right side | NON-BILLABLE CODE |
| S04.41XA | Injury of abducent nerve, right side, initial encounter | BILLABLE CODE |
| S04.41XD | Injury of abducent nerve, right side, subsequent encounter | BILLABLE CODE |
| S04.41XS | Injury of abducent nerve, right side, sequela | BILLABLE CODE |
| S04.42 | Injury of abducent nerve, left side | NON-BILLABLE CODE |
| S04.42XA | Injury of abducent nerve, left side, initial encounter | BILLABLE CODE |
| S04.42XD | Injury of abducent nerve, left side, subsequent encounter | BILLABLE CODE |
| S04.42XS | Injury of abducent nerve, left side, sequela | BILLABLE CODE |
| S04.5 | Injury of facial nerve | NON-BILLABLE CODE |
| S04.50 | Injury of facial nerve, unspecified side | NON-BILLABLE CODE |
| S04.50XA | Injury of facial nerve, unspecified side, initial encounter | BILLABLE CODE |
| S04.50XD | Injury of facial nerve, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.50XS | Injury of facial nerve, unspecified side, sequela | BILLABLE CODE |
| S04.51 | Injury of facial nerve, right side | NON-BILLABLE CODE |
| S04.51XA | Injury of facial nerve, right side, initial encounter | BILLABLE CODE |
| S04.51XD | Injury of facial nerve, right side, subsequent encounter | BILLABLE CODE |
| S04.51XS | Injury of facial nerve, right side, sequela | BILLABLE CODE |
| S04.52 | Injury of facial nerve, left side | NON-BILLABLE CODE |
| S04.52XA | Injury of facial nerve, left side, initial encounter | BILLABLE CODE |
| S04.52XD | Injury of facial nerve, left side, subsequent encounter | BILLABLE CODE |
| S04.52XS | Injury of facial nerve, left side, sequela | BILLABLE CODE |
| S04.6 | Injury of acoustic nerve | NON-BILLABLE CODE |
| S04.60 | Injury of acoustic nerve, unspecified side | NON-BILLABLE CODE |
| S04.60XA | Injury of acoustic nerve, unspecified side, initial encounter | BILLABLE CODE |
| S04.60XD | Injury of acoustic nerve, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.60XS | Injury of acoustic nerve, unspecified side, sequela | BILLABLE CODE |
| S04.61 | Injury of acoustic nerve, right side | NON-BILLABLE CODE |
| S04.61XA | Injury of acoustic nerve, right side, initial encounter | BILLABLE CODE |
| S04.61XD | Injury of acoustic nerve, right side, subsequent encounter | BILLABLE CODE |
| S04.61XS | Injury of acoustic nerve, right side, sequela | BILLABLE CODE |
| S04.62 | Injury of acoustic nerve, left side | NON-BILLABLE CODE |
| S04.62XA | Injury of acoustic nerve, left side, initial encounter | BILLABLE CODE |
| S04.62XD | Injury of acoustic nerve, left side, subsequent encounter | BILLABLE CODE |
| S04.62XS | Injury of acoustic nerve, left side, sequela | BILLABLE CODE |
| S04.7 | Injury of accessory nerve | NON-BILLABLE CODE |
| S04.70 | Injury of accessory nerve, unspecified side | NON-BILLABLE CODE |
| S04.70XA | Injury of accessory nerve, unspecified side, initial encounter | BILLABLE CODE |
| S04.70XD | Injury of accessory nerve, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.70XS | Injury of accessory nerve, unspecified side, sequela | BILLABLE CODE |
| S04.71 | Injury of accessory nerve, right side | NON-BILLABLE CODE |
| S04.71XA | Injury of accessory nerve, right side, initial encounter | BILLABLE CODE |
| S04.71XD | Injury of accessory nerve, right side, subsequent encounter | BILLABLE CODE |
| S04.71XS | Injury of accessory nerve, right side, sequela | BILLABLE CODE |
| S04.72 | Injury of accessory nerve, left side | NON-BILLABLE CODE |
| S04.72XA | Injury of accessory nerve, left side, initial encounter | BILLABLE CODE |
| S04.72XD | Injury of accessory nerve, left side, subsequent encounter | BILLABLE CODE |
| S04.72XS | Injury of accessory nerve, left side, sequela | BILLABLE CODE |
| S04.8 | Injury of other cranial nerves | NON-BILLABLE CODE |
| S04.81 | Injury of olfactory [1st ] nerve | NON-BILLABLE CODE |
| S04.811 | Injury of olfactory [1st ] nerve, right side | NON-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 |
| S04.89 | Injury of other cranial nerves | NON-BILLABLE CODE |
| S04.891 | Injury of other cranial nerves, right side | NON-BILLABLE CODE |
| S04.891A | Injury of other cranial nerves, right side, initial encounter | BILLABLE CODE |
| S04.891D | Injury of other cranial nerves, right side, subsequent encounter | BILLABLE CODE |
| S04.891S | Injury of other cranial nerves, right side, sequela | BILLABLE CODE |
| S04.892 | Injury of other cranial nerves, left side | NON-BILLABLE CODE |
| S04.892A | Injury of other cranial nerves, left side, initial encounter | BILLABLE CODE |
| S04.892D | Injury of other cranial nerves, left side, subsequent encounter | BILLABLE CODE |
| S04.892S | Injury of other cranial nerves, left side, sequela | BILLABLE CODE |
| S04.899 | Injury of other cranial nerves, unspecified side | NON-BILLABLE CODE |
| S04.899A | Injury of other cranial nerves, unspecified side, initial encounter | BILLABLE CODE |
| S04.899D | Injury of other cranial nerves, unspecified side, subsequent encounter | BILLABLE CODE |
| S04.899S | Injury of other cranial nerves, unspecified side, sequela | BILLABLE CODE |
| S04.9 | Injury of unspecified cranial nerve | NON-BILLABLE CODE |
| S04.9XXA | Injury of unspecified cranial nerve, initial encounter | BILLABLE CODE |
| S04.9XXD | Injury of unspecified cranial nerve, subsequent encounter | BILLABLE CODE |
| S04.9XXS | Injury of unspecified cranial nerve, sequela | BILLABLE CODE |
