S80.242Header code — not billable
External constriction, left knee
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S80
- Effective date
- October 1, 2026
Related codes in category S80
S80Superficial injury of knee and lower legS80.0Contusion of kneeS80.00Contusion of unspecified kneeS80.00XAContusion of unspecified knee, initial encounterYesS80.00XDContusion of unspecified knee, subsequent encounterYesS80.00XSContusion of unspecified knee, sequelaYesS80.01Contusion of right kneeS80.01XAContusion of right knee, initial encounterYesS80.01XDContusion of right knee, subsequent encounterYesS80.01XSContusion of right knee, sequelaYesS80.02Contusion of left kneeS80.02XAContusion of left knee, initial encounterYes
Frequently asked questions
What is ICD-10 code S80.242?
S80.242 is an ICD-10-CM diagnosis code for External constriction, left knee.
Is S80.242 a billable code?
No. S80.242 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 S80.242 in?
S80.242 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S80.242 become effective?
S80.242 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S80.242?
S80.242 belongs to category S80, 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.