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S04 Injury of cranial nerve
BackS04.0Injury of optic nerve and pathwaysCategory4 →S04.01Injury of optic nerveCategory3 →S04.011Injury of optic nerve, right eyeCategoryS04.012Injury of optic nerve, left eyeCategoryS04.019Injury of optic nerve, unspecified eyeCategoryS04.02Injury of optic chiasmCategoryS04.03Injury of optic tract and pathwaysCategory3 →S04.031Injury of optic tract and pathways, right sideCategoryS04.032Injury of optic tract and pathways, left sideCategoryS04.039Injury of optic tract and pathways, unspecified sideCategoryS04.04Injury of visual cortexCategory3 →S04.041Injury of visual cortex, right sideCategoryS04.042Injury of visual cortex, left sideCategoryS04.049Injury of visual cortex, unspecified sideCategoryS04.1Injury of oculomotor nerveCategory3 →S04.10Injury of oculomotor nerve, unspecified sideCategoryS04.11Injury of oculomotor nerve, right sideCategoryS04.12Injury of oculomotor nerve, left sideCategoryS04.2Injury of trochlear nerveCategory3 →S04.20Injury of trochlear nerve, unspecified sideCategoryS04.21Injury of trochlear nerve, right sideCategoryS04.22Injury of trochlear nerve, left sideCategoryS04.3Injury of trigeminal nerveCategory3 →S04.30Injury of trigeminal nerve, unspecified sideCategoryS04.31Injury of trigeminal nerve, right sideCategoryS04.32Injury of trigeminal nerve, left sideCategoryS04.4Injury of abducent nerveCategory3 →S04.40Injury of abducent nerve, unspecified sideCategoryS04.41Injury of abducent nerve, right sideCategoryS04.42Injury of abducent nerve, left sideCategoryS04.5Injury of facial nerveCategory3 →S04.50Injury of facial nerve, unspecified sideCategoryS04.51Injury of facial nerve, right sideCategoryS04.52Injury of facial nerve, left sideCategoryS04.6Injury of acoustic nerveCategory3 →S04.60Injury of acoustic nerve, unspecified sideCategoryS04.61Injury of acoustic nerve, right sideCategoryS04.62Injury of acoustic nerve, left sideCategoryS04.7Injury of accessory nerveCategory3 →S04.70Injury of accessory nerve, unspecified sideCategoryS04.71Injury of accessory nerve, right sideCategoryS04.72Injury of accessory nerve, left sideCategoryS04.8Injury of other cranial nervesCategory2 →S04.81Injury of olfactory [1st ] nerveCategory3 →S04.811Injury of olfactory [1st ] nerve, right sideCategoryS04.812Injury of olfactory [1st ] nerve, left sideCategoryS04.819Injury of olfactory [1st ] nerve, unspecified sideCategoryS04.89Injury of other cranial nervesCategory3 →S04.891Injury of other cranial nerves, right sideCategoryS04.892Injury of other cranial nerves, left sideCategoryS04.899Injury of other cranial nerves, unspecified sideCategoryS04.9Injury of unspecified cranial nerveCategory
Category
S04
Injury of cranial nerve
EXAMPLES
The selection of side should be based on the side of the body being affected
NOTE
7th character: The appropriate 7th character is to be added to each code from category S04
7th character definitions: initial encounter
subsequent encounter
sequela
7th character definitions: initial encounter
subsequent encounter
sequela
CODING RULE
Code first: any associated intracranial injury (S06.-)
Code also: any associated:
open wound of head (S01.-)
skull fracture (S02.-)
Code also: any associated:
open wound of head (S01.-)
skull fracture (S02.-)
- Chapter
- XIX · Injury, poisoning and certain other consequences of external causes
- Section
- S00-S09
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.