ICD-10-CM S04: Injury of cranial nerve

ICD-10-CM Diagnosis Code (2025)

Official Description for S04

Injury of cranial nerve

Coding Notes & Guidelines for S04

Code First

any associated intracranial injury (S06.-)

Use Additional Code

code to identify any visual field defect or blindness (H53.4-, H54.-)

Inclusion Terms

The selection of side should be based on the side of the body being affected

Inclusion Terms

Injury of 2nd cranial nerve

Inclusion Terms

Injury of optic nerve NOS

Inclusion Terms

Injury of optic radiation

Inclusion Terms

Injury of optic tract and pathways NOS

Inclusion Terms

Injury of visual cortex NOS

Inclusion Terms

Injury of 3rd cranial nerve

Inclusion Terms

Injury of 4th cranial nerve

Inclusion Terms

Injury of 5th cranial nerve

Inclusion Terms

Injury of 6th cranial nerve

Inclusion Terms

Injury of 7th cranial nerve

Inclusion Terms
  • Injury of auditory nerve
  • Injury of 8th cranial nerve
Inclusion Terms

Injury of 11th cranial nerve

Inclusion Terms

Injury of vagus [10th] nerve

Code Also
  • any associated:
  • open wound of head (S01.-)
  • skull fracture (S02.-)
7th Character Guidance

The appropriate 7th character is to be added to each code from category S04

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for S04):

S04.0 - Injury of optic nerve and pathways S04.01 - Injury of optic nerve S04.011 - Injury of optic nerve, right eye S04.012 - Injury of optic nerve, left eye S04.019 - Injury of optic nerve, unspecified eye S04.02 - Injury of optic chiasm S04.03 - Injury of optic tract and pathways S04.031 - Injury of optic tract and pathways, right side S04.032 - Injury of optic tract and pathways, left side S04.039 - Injury of optic tract and pathways, unspecified side S04.04 - Injury of visual cortex S04.041 - Injury of visual cortex, right side S04.042 - Injury of visual cortex, left side S04.049 - Injury of visual cortex, unspecified side S04.1 - Injury of oculomotor nerve S04.10 - Injury of oculomotor nerve, unspecified side S04.11 - Injury of oculomotor nerve, right side S04.12 - Injury of oculomotor nerve, left side S04.2 - Injury of trochlear nerve S04.20 - Injury of trochlear nerve, unspecified side S04.21 - Injury of trochlear nerve, right side S04.22 - Injury of trochlear nerve, left side S04.3 - Injury of trigeminal nerve S04.30 - Injury of trigeminal nerve, unspecified side S04.31 - Injury of trigeminal nerve, right side S04.32 - Injury of trigeminal nerve, left side S04.4 - Injury of abducent nerve S04.40 - Injury of abducent nerve, unspecified side S04.41 - Injury of abducent nerve, right side S04.42 - Injury of abducent nerve, left side S04.5 - Injury of facial nerve S04.50 - Injury of facial nerve, unspecified side S04.51 - Injury of facial nerve, right side S04.52 - Injury of facial nerve, left side S04.6 - Injury of acoustic nerve S04.60 - Injury of acoustic nerve, unspecified side S04.61 - Injury of acoustic nerve, right side S04.62 - Injury of acoustic nerve, left side S04.7 - Injury of accessory nerve S04.70 - Injury of accessory nerve, unspecified side S04.71 - Injury of accessory nerve, right side S04.72 - Injury of accessory nerve, left side S04.8 - Injury of other cranial nerves S04.81 - Injury of olfactory [1st ] nerve S04.811 - Injury of olfactory [1st ] nerve, right side S04.812 - Injury of olfactory [1st ] nerve, left side S04.819 - Injury of olfactory [1st ] nerve, unspecified side S04.89 - Injury of other cranial nerves S04.891 - Injury of other cranial nerves, right side S04.892 - Injury of other cranial nerves, left side S04.899 - Injury of other cranial nerves, unspecified side S04.9 - Injury of unspecified cranial nerve

About ICD-10-CM Code S04 (Injury of cranial nerve)

ICD-10-CM code S04 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM S04 became effective on October 1, 2024.

This page provides detailed information about S04 - Injury of cranial nerve. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Injury of cranial nerve.