S83.409ABillable
Sprain of unspecified collateral ligament of unspecified knee, initial encounter
Short description: Sprain of unsp collateral ligament of unsp knee, init encntr
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S83
- Effective date
- October 1, 2026
Related codes in category S83
S83Dislocation and sprain of joints and ligaments of kneeS83.0Subluxation and dislocation of patellaS83.00Unspecified subluxation and dislocation of patellaS83.001Unspecified subluxation of right patellaS83.001AUnspecified subluxation of right patella, initial encounterYesS83.001DUnspecified subluxation of right patella, subs encntrYesS83.001SUnspecified subluxation of right patella, sequelaYesS83.002Unspecified subluxation of left patellaS83.002AUnspecified subluxation of left patella, initial encounterYesS83.002DUnspecified subluxation of left patella, subs encntrYesS83.002SUnspecified subluxation of left patella, sequelaYesS83.003Unspecified subluxation of unspecified patella
Frequently asked questions
What is ICD-10 code S83.409A?
S83.409A is an ICD-10-CM diagnosis code for Sprain of unspecified collateral ligament of unspecified knee, initial encounter.
Is S83.409A a billable code?
Yes. S83.409A is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is S83.409A in?
S83.409A falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S83.409A become effective?
S83.409A has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S83.409A?
S83.409A belongs to category S83, 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.