S04.81Header code — not billable
Injury of olfactory [1st ] nerve
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S04
- Effective date
- October 1, 2026
Related codes in category S04
S04Injury of cranial nerveS04.0Injury of optic nerve and pathwaysS04.01Injury of optic nerveS04.011Injury of optic nerve, right eyeS04.011AInjury of optic nerve, right eye, initial encounterYesS04.011DInjury of optic nerve, right eye, subsequent encounterYesS04.011SInjury of optic nerve, right eye, sequelaYesS04.012Injury of optic nerve, left eyeS04.012AInjury of optic nerve, left eye, initial encounterYesS04.012DInjury of optic nerve, left eye, subsequent encounterYesS04.012SInjury of optic nerve, left eye, sequelaYesS04.019Injury of optic nerve, unspecified eye
Frequently asked questions
What is ICD-10 code S04.81?
S04.81 is an ICD-10-CM diagnosis code for Injury of olfactory [1st ] nerve.
Is S04.81 a billable code?
No. S04.81 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is S04.81 in?
S04.81 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S04.81 become effective?
S04.81 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S04.81?
S04.81 belongs to category S04, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.