Injury of cranial nerve (S04)

Browse all the diagnosis codes used for injury of cranial nerve (s04). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

Instructional Notations

Inclusion Terms

These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.

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

Code First

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

  • any associated intracranial injury S06

Code Also

A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

  • any associated:
  • open wound of head S01
  • skull fracture S02

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

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

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela
  • Injury, poisoning and certain other consequences of external causes (S00–T88)

    • Injuries to the head (S00-S09)

        • Injury of cranial nerve (S04)

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