S04 Injury of cranial nerve
ICD-10-CM category S04 sits in Chapter 20 (External causes of morbidity, V00-Y99). It contains 114 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
S04.0 Injury of optic nerve and pathwaysS04.01 Injury of optic nerveS04.011 Injury of optic nerve, right eyeS04.012 Injury of optic nerve, left eyeS04.019 Injury of optic nerve, unspecified eyeS04.02 Injury of optic chiasmS04.03 Injury of optic tract and pathwaysS04.031 Injury of optic tract and pathways, right sideS04.032 Injury of optic tract and pathways, left sideS04.039 Injury of optic tract and pathways, unspecified sideS04.04 Injury of visual cortexS04.041 Injury of visual cortex, right sideS04.042 Injury of visual cortex, left sideS04.049 Injury of visual cortex, unspecified sideS04.1 Injury of oculomotor nerveS04.10 Injury of oculomotor nerve, unspecified sideS04.11 Injury of oculomotor nerve, right sideS04.12 Injury of oculomotor nerve, left sideS04.2 Injury of trochlear nerveS04.20 Injury of trochlear nerve, unspecified sideS04.21 Injury of trochlear nerve, right sideS04.22 Injury of trochlear nerve, left sideS04.3 Injury of trigeminal nerveS04.30 Injury of trigeminal nerve, unspecified sideS04.31 Injury of trigeminal nerve, right sideS04.32 Injury of trigeminal nerve, left sideS04.4 Injury of abducent nerveS04.40 Injury of abducent nerve, unspecified sideS04.41 Injury of abducent nerve, right sideS04.42 Injury of abducent nerve, left sideS04.5 Injury of facial nerveS04.50 Injury of facial nerve, unspecified sideS04.51 Injury of facial nerve, right sideS04.52 Injury of facial nerve, left sideS04.6 Injury of acoustic nerveS04.60 Injury of acoustic nerve, unspecified sideS04.61 Injury of acoustic nerve, right sideS04.62 Injury of acoustic nerve, left sideS04.7 Injury of accessory nerveS04.70 Injury of accessory nerve, unspecified side
Billable codes in S04
| Code | Description |
|---|---|
S04.011A | Injury of optic nerve, right eye, initial encounter |
S04.011D | Injury of optic nerve, right eye, subsequent encounter |
S04.011S | Injury of optic nerve, right eye, sequela |
S04.012A | Injury of optic nerve, left eye, initial encounter |
S04.012D | Injury of optic nerve, left eye, subsequent encounter |
S04.012S | Injury of optic nerve, left eye, sequela |
S04.019A | Injury of optic nerve, unspecified eye, initial encounter |
S04.019D | Injury of optic nerve, unspecified eye, subsequent encounter |
S04.019S | Injury of optic nerve, unspecified eye, sequela |
S04.02XA | Injury of optic chiasm, initial encounter |
S04.02XD | Injury of optic chiasm, subsequent encounter |
S04.02XS | Injury of optic chiasm, sequela |
S04.031A | Injury of optic tract and pathways, right side, initial encounter |
S04.031D | Injury of optic tract and pathways, right side, subsequent encounter |
S04.031S | Injury of optic tract and pathways, right side, sequela |
S04.032A | Injury of optic tract and pathways, left side, initial encounter |
S04.032D | Injury of optic tract and pathways, left side, subsequent encounter |
S04.032S | Injury of optic tract and pathways, left side, sequela |
S04.039A | Injury of optic tract and pathways, unspecified side, initial encounter |
S04.039D | Injury of optic tract and pathways, unspecified side, subsequent encounter |
S04.039S | Injury of optic tract and pathways, unspecified side, sequela |
S04.041A | Injury of visual cortex, right side, initial encounter |
S04.041D | Injury of visual cortex, right side, subsequent encounter |
S04.041S | Injury of visual cortex, right side, sequela |
S04.042A | Injury of visual cortex, left side, initial encounter |
S04.042D | Injury of visual cortex, left side, subsequent encounter |
S04.042S | Injury of visual cortex, left side, sequela |
S04.049A | Injury of visual cortex, unspecified side, initial encounter |
S04.049D | Injury of visual cortex, unspecified side, subsequent encounter |
S04.049S | Injury of visual cortex, unspecified side, sequela |
S04.10XA | Injury of oculomotor nerve, unspecified side, initial encounter |
S04.10XD | Injury of oculomotor nerve, unspecified side, subsequent encounter |
S04.10XS | Injury of oculomotor nerve, unspecified side, sequela |
S04.11XA | Injury of oculomotor nerve, right side, initial encounter |
S04.11XD | Injury of oculomotor nerve, right side, subsequent encounter |
S04.11XS | Injury of oculomotor nerve, right side, sequela |
S04.12XA | Injury of oculomotor nerve, left side, initial encounter |
S04.12XD | Injury of oculomotor nerve, left side, subsequent encounter |
S04.12XS | Injury of oculomotor nerve, left side, sequela |
S04.20XA | Injury of trochlear nerve, unspecified side, initial encounter |
S04.20XD | Injury of trochlear nerve, unspecified side, subsequent encounter |
S04.20XS | Injury of trochlear nerve, unspecified side, sequela |
S04.21XA | Injury of trochlear nerve, right side, initial encounter |
S04.21XD | Injury of trochlear nerve, right side, subsequent encounter |
S04.21XS | Injury of trochlear nerve, right side, sequela |
S04.22XA | Injury of trochlear nerve, left side, initial encounter |
S04.22XD | Injury of trochlear nerve, left side, subsequent encounter |
S04.22XS | Injury of trochlear nerve, left side, sequela |
S04.30XA | Injury of trigeminal nerve, unspecified side, initial encounter |
S04.30XD | Injury of trigeminal nerve, unspecified side, subsequent encounter |
S04.30XS | Injury of trigeminal nerve, unspecified side, sequela |
S04.31XA | Injury of trigeminal nerve, right side, initial encounter |
S04.31XD | Injury of trigeminal nerve, right side, subsequent encounter |
S04.31XS | Injury of trigeminal nerve, right side, sequela |
S04.32XA | Injury of trigeminal nerve, left side, initial encounter |
S04.32XD | Injury of trigeminal nerve, left side, subsequent encounter |
S04.32XS | Injury of trigeminal nerve, left side, sequela |
S04.40XA | Injury of abducent nerve, unspecified side, initial encounter |
S04.40XD | Injury of abducent nerve, unspecified side, subsequent encounter |
S04.40XS | Injury of abducent nerve, unspecified side, sequela |
S04.41XA | Injury of abducent nerve, right side, initial encounter |
S04.41XD | Injury of abducent nerve, right side, subsequent encounter |
S04.41XS | Injury of abducent nerve, right side, sequela |
S04.42XA | Injury of abducent nerve, left side, initial encounter |
S04.42XD | Injury of abducent nerve, left side, subsequent encounter |
S04.42XS | Injury of abducent nerve, left side, sequela |
S04.50XA | Injury of facial nerve, unspecified side, initial encounter |
S04.50XD | Injury of facial nerve, unspecified side, subsequent encounter |
S04.50XS | Injury of facial nerve, unspecified side, sequela |
S04.51XA | Injury of facial nerve, right side, initial encounter |
S04.51XD | Injury of facial nerve, right side, subsequent encounter |
S04.51XS | Injury of facial nerve, right side, sequela |
S04.52XA | Injury of facial nerve, left side, initial encounter |
S04.52XD | Injury of facial nerve, left side, subsequent encounter |
S04.52XS | Injury of facial nerve, left side, sequela |
S04.60XA | Injury of acoustic nerve, unspecified side, initial encounter |
S04.60XD | Injury of acoustic nerve, unspecified side, subsequent encounter |
S04.60XS | Injury of acoustic nerve, unspecified side, sequela |
S04.61XA | Injury of acoustic nerve, right side, initial encounter |
S04.61XD | Injury of acoustic nerve, right side, subsequent encounter |
S04.61XS | Injury of acoustic nerve, right side, sequela |
S04.62XA | Injury of acoustic nerve, left side, initial encounter |
S04.62XD | Injury of acoustic nerve, left side, subsequent encounter |
S04.62XS | Injury of acoustic nerve, left side, sequela |
S04.70XA | Injury of accessory nerve, unspecified side, initial encounter |
S04.70XD | Injury of accessory nerve, unspecified side, subsequent encounter |
S04.70XS | Injury of accessory nerve, unspecified side, sequela |
S04.71XA | Injury of accessory nerve, right side, initial encounter |
S04.71XD | Injury of accessory nerve, right side, subsequent encounter |
S04.71XS | Injury of accessory nerve, right side, sequela |
S04.72XA | Injury of accessory nerve, left side, initial encounter |
S04.72XD | Injury of accessory nerve, left side, subsequent encounter |
S04.72XS | Injury of accessory nerve, left side, sequela |
S04.811A | Injury of olfactory [1st ] nerve, right side, initial encounter |
S04.811D | Injury of olfactory [1st ] nerve, right side, subsequent encounter |
S04.811S | Injury of olfactory [1st ] nerve, right side, sequela |
S04.812A | Injury of olfactory [1st ] nerve, left side, initial encounter |
S04.812D | Injury of olfactory [1st ] nerve, left side, subsequent encounter |
S04.812S | Injury of olfactory [1st ] nerve, left side, sequela |
S04.819A | Injury of olfactory [1st ] nerve, unspecified side, initial encounter |
S04.819D | Injury of olfactory [1st ] nerve, unspecified side, subsequent encounter |
S04.819S | Injury of olfactory [1st ] nerve, unspecified side, sequela |
S04.891A | Injury of other cranial nerves, right side, initial encounter |
S04.891D | Injury of other cranial nerves, right side, subsequent encounter |
S04.891S | Injury of other cranial nerves, right side, sequela |
S04.892A | Injury of other cranial nerves, left side, initial encounter |
S04.892D | Injury of other cranial nerves, left side, subsequent encounter |
S04.892S | Injury of other cranial nerves, left side, sequela |
S04.899A | Injury of other cranial nerves, unspecified side, initial encounter |
S04.899D | Injury of other cranial nerves, unspecified side, subsequent encounter |
S04.899S | Injury of other cranial nerves, unspecified side, sequela |
S04.9XXA | Injury of unspecified cranial nerve, initial encounter |
S04.9XXD | Injury of unspecified cranial nerve, subsequent encounter |
S04.9XXS | Injury of unspecified cranial nerve, sequela |
Search within ICD-10-CM for S04 and related codes