S09.399ABillable
Other specified injury of unspecified middle and inner ear, initial encounter
Short description: Oth injury of unspecified middle and inner ear, init encntr
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S09
- Effective date
- October 1, 2026
Related codes in category S09
S09Other and unspecified injuries of headS09.0Injury of blood vessels of head, not elsewhere classifiedS09.0XXAInjury of blood vessels of head, NEC, initYesS09.0XXDInjury of blood vessels of head, NEC, subsYesS09.0XXSInjury of blood vessels of head, NEC, sequelaYesS09.1Injury of muscle and tendon of headS09.10Unspecified injury of muscle and tendon of headS09.10XAUnspecified injury of muscle and tendon of head, init encntrYesS09.10XDUnspecified injury of muscle and tendon of head, subs encntrYesS09.10XSUnspecified injury of muscle and tendon of head, sequelaYesS09.11Strain of muscle and tendon of headS09.11XAStrain of muscle and tendon of head, initial encounterYes
Frequently asked questions
What is ICD-10 code S09.399A?
S09.399A is an ICD-10-CM diagnosis code for Other specified injury of unspecified middle and inner ear, initial encounter.
Is S09.399A a billable code?
Yes. S09.399A is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is S09.399A in?
S09.399A falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S09.399A become effective?
S09.399A has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S09.399A?
S09.399A belongs to category S09, 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.