S04 — Injury of cranial nerve
Is S04 billable?
No — S04 is a non-billable header code. S04 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 60 billable codes beneath S04.
Billable codes under this header
- S04.9XXAInjury of unspecified cranial nerve, initial encounter
- S04.9XXDInjury of unspecified cranial nerve, subsequent encounter
- S04.9XXSInjury of unspecified cranial nerve, sequela
- S04.02XAInjury of optic chiasm, initial encounter
- S04.02XDInjury of optic chiasm, subsequent encounter
- S04.02XSInjury of optic chiasm, sequela
- S04.10XAInjury of oculomotor nerve, unspecified side, initial encounter
- S04.10XDInjury of oculomotor nerve, unspecified side, subsequent encounter
- S04.10XSInjury of oculomotor nerve, unspecified side, sequela
- S04.11XAInjury of oculomotor nerve, right side, initial encounter
- S04.11XDInjury of oculomotor nerve, right side, subsequent encounter
- S04.11XSInjury of oculomotor nerve, right side, sequela
- S04.12XAInjury of oculomotor nerve, left side, initial encounter
- S04.12XDInjury of oculomotor nerve, left side, subsequent encounter
- S04.12XSInjury of oculomotor nerve, left side, sequela
- S04.20XAInjury of trochlear nerve, unspecified side, initial encounter
- S04.20XDInjury of trochlear nerve, unspecified side, subsequent encounter
- S04.20XSInjury of trochlear nerve, unspecified side, sequela
- S04.21XAInjury of trochlear nerve, right side, initial encounter
- S04.21XDInjury of trochlear nerve, right side, subsequent encounter
- S04.21XSInjury of trochlear nerve, right side, sequela
- S04.22XAInjury of trochlear nerve, left side, initial encounter
- S04.22XDInjury of trochlear nerve, left side, subsequent encounter
- S04.22XSInjury of trochlear nerve, left side, sequela
- S04.30XAInjury of trigeminal nerve, unspecified side, initial encounter
- S04.30XDInjury of trigeminal nerve, unspecified side, subsequent encounter
- S04.30XSInjury of trigeminal nerve, unspecified side, sequela
- S04.31XAInjury of trigeminal nerve, right side, initial encounter
- S04.31XDInjury of trigeminal nerve, right side, subsequent encounter
- S04.31XSInjury of trigeminal nerve, right side, sequela
- S04.32XAInjury of trigeminal nerve, left side, initial encounter
- S04.32XDInjury of trigeminal nerve, left side, subsequent encounter
- S04.32XSInjury of trigeminal nerve, left side, sequela
- S04.40XAInjury of abducent nerve, unspecified side, initial encounter
- S04.40XDInjury of abducent nerve, unspecified side, subsequent encounter
- S04.40XSInjury of abducent nerve, unspecified side, sequela
- S04.41XAInjury of abducent nerve, right side, initial encounter
- S04.41XDInjury of abducent nerve, right side, subsequent encounter
- S04.41XSInjury of abducent nerve, right side, sequela
- S04.42XAInjury of abducent nerve, left side, initial encounter
- S04.42XDInjury of abducent nerve, left side, subsequent encounter
- S04.42XSInjury of abducent nerve, left side, sequela
- S04.50XAInjury of facial nerve, unspecified side, initial encounter
- S04.50XDInjury of facial nerve, unspecified side, subsequent encounter
- S04.50XSInjury of facial nerve, unspecified side, sequela
- S04.51XAInjury of facial nerve, right side, initial encounter
- S04.51XDInjury of facial nerve, right side, subsequent encounter
- S04.51XSInjury of facial nerve, right side, sequela
- S04.52XAInjury of facial nerve, left side, initial encounter
- S04.52XDInjury of facial nerve, left side, subsequent encounter
- S04.52XSInjury of facial nerve, left side, sequela
- S04.60XAInjury of acoustic nerve, unspecified side, initial encounter
- S04.60XDInjury of acoustic nerve, unspecified side, subsequent encounter
- S04.60XSInjury of acoustic nerve, unspecified side, sequela
- S04.61XAInjury of acoustic nerve, right side, initial encounter
- S04.61XDInjury of acoustic nerve, right side, subsequent encounter
- S04.61XSInjury of acoustic nerve, right side, sequela
- S04.62XAInjury of acoustic nerve, left side, initial encounter
- S04.62XDInjury of acoustic nerve, left side, subsequent encounter
- S04.62XSInjury of acoustic nerve, left side, sequela
S04 at a glance
| Code | S04 |
|---|---|
| Description | Injury of cranial nerve |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Code first
The underlying condition below must be sequenced before S04. S04 describes a manifestation and cannot be the principal or first-listed diagnosis.
- any associated intracranial injury (S06.-)
Code also
Two codes may be needed to describe the condition fully. Whether S04 is sequenced first depends on the reason for the encounter.
Inclusion terms
Alternative wording in documentation that is classified to S04.
- The selection of side should be based on the side of the body being affected
Use additional code — inherited from Chapter 19
Report an additional code alongside S04 to fully describe the condition. S04 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S04, but a patient may have both at the same time. When documentation supports it, S04 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S00-S09
The conditions below are not part of S04, but a patient may have both at the same time. When documentation supports it, S04 and the excluded code may both be reported.
- burns and corrosions (T20-T32)
- effects of foreign body in ear (T16)
- effects of foreign body in larynx (T17.3)
- effects of foreign body in mouth NOS (T18.0)
- effects of foreign body in nose (T17.0-T17.1)
- effects of foreign body in pharynx (T17.2)
- effects of foreign body on external eye (T15.-)
- frostbite (T33-T34)
- insect bite or sting, venomous (T63.4)
Code also — inherited from S00-S09
Two codes may be needed to describe the condition fully. Whether S04 is sequenced first depends on the reason for the encounter.
- for any associated infection
What codes fall under S04? (10)
- S04.0Injury of optic nerve and pathwaysnot billable
- S04.1Injury of oculomotor nervenot billable
- S04.2Injury of trochlear nervenot billable
- S04.3Injury of trigeminal nervenot billable
- S04.4Injury of abducent nervenot billable
- S04.5Injury of facial nervenot billable
- S04.6Injury of acoustic nervenot billable
- S04.7Injury of accessory nervenot billable
- S04.8Injury of other cranial nervesnot billable
- S04.9Injury of unspecified cranial nervenot billable
How long has S04 existed?
S04 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.