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ICD-10-CM · FY 2026 APRIL UPDATE

S04.8

Injury of other cranial nerves

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
S04.81Injury of olfactory [1st ] nerveCategory
S04.811Injury of olfactory [1st ] nerve, right sideCategory
S04.811AInjury of olfactory [1st ] nerve, right side, initial encounterBillable
S04.811DInjury of olfactory [1st ] nerve, right side, subsequent encounterBillable
S04.811SInjury of olfactory [1st ] nerve, right side, sequelaBillable
S04.812Injury of olfactory [1st ] nerve, left sideCategory
S04.812AInjury of olfactory [1st ] nerve, left side, initial encounterBillable
S04.812DInjury of olfactory [1st ] nerve, left side, subsequent encounterBillable
S04.812SInjury of olfactory [1st ] nerve, left side, sequelaBillable
S04.819Injury of olfactory [1st ] nerve, unspecified sideCategory
S04.819AInjury of olfactory [1st ] nerve, unspecified side, initial encounterBillable
S04.819DInjury of olfactory [1st ] nerve, unspecified side, subsequent encounterBillable
S04.819SInjury of olfactory [1st ] nerve, unspecified side, sequelaBillable
S04.89Injury of other cranial nervesCategory
S04.891Injury of other cranial nerves, right sideCategory
S04.891AInjury of other cranial nerves, right side, initial encounterBillable
S04.891DInjury of other cranial nerves, right side, subsequent encounterBillable
S04.891SInjury of other cranial nerves, right side, sequelaBillable
S04.892Injury of other cranial nerves, left sideCategory
S04.892AInjury of other cranial nerves, left side, initial encounterBillable
S04.892DInjury of other cranial nerves, left side, subsequent encounterBillable
S04.892SInjury of other cranial nerves, left side, sequelaBillable
S04.899Injury of other cranial nerves, unspecified sideCategory
S04.899AInjury of other cranial nerves, unspecified side, initial encounterBillable
S04.899DInjury of other cranial nerves, unspecified side, subsequent encounterBillable
S04.899SInjury of other cranial nerves, unspecified side, sequelaBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.