U.S. ICD-10-CM · FY 2027

S04 ICD-10-CM Code: Injury of cranial nerve

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

S04

Injury of cranial nerve

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where S04 sits

  1. 1

    Chapter 19

    Injury, poisoning and certain other consequences of external causes (S00-T88)

  2. 2

    Section

    Injuries to the head (S00-S09)

  3. 3

    Category S04

    Injury of cranial nerve

  4. 4

    Code S04

    Injury of cranial nerve

More specific choices

Codes under S04

S04 is a non-billable category. Choose the child code that best matches the documented diagnosis.

S04.0

Injury of optic nerve and pathways

S04.1

Injury of oculomotor nerve

S04.2

Injury of trochlear nerve

S04.3

Injury of trigeminal nerve

S04.4

Injury of abducent nerve

S04.5

Injury of facial nerve

S04.6

Injury of acoustic nerve

S04.7

Injury of accessory nerve

S04.8

Injury of other cranial nerves

S04.9

Injury of unspecified cranial nerve

Documentation details

Notes for this code

Inclusion terms

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

Code first

  • any associated intracranial injury (S06.-)

Use additional code

No “use additional code” instruction is listed for S04.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for S04.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for S04.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code S04 mean?

S04 is the FY 2027 U.S. ICD-10-CM code for “Injury of cranial nerve.”

Is S04 a billable or specific ICD-10-CM code?

No. S04 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is S04 located in ICD-10-CM?

S04 is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Injuries to the head (S00-S09) (S00–S09), under category S04, Injury of cranial nerve.

What coding notes are listed for S04?

Its listed inclusion terms are The selection of side should be based on the side of the body being affected. Code-first instructions: any associated intracranial injury (S06.-). No Excludes1 note is listed. No Excludes2 note is listed.

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