S04.20XABillable
Injury of trochlear nerve, unspecified side, initial encounter
Short description: Injury of trochlear nerve, unspecified side, init encntr
- 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 S04.20XA?
S04.20XA is an ICD-10-CM diagnosis code for Injury of trochlear nerve, unspecified side, initial encounter.
Is S04.20XA a billable code?
Yes. S04.20XA is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is S04.20XA in?
S04.20XA falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S04.20XA become effective?
S04.20XA has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S04.20XA?
S04.20XA 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.