S80.242A External constriction, left knee, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S80.242 with 7th character A (initial encounter).

Applies from S80 Superficial injury of knee and lower leg

Excludes2 (not included here)

• superficial injury of ankle and foot (S90.-)

7th character note

• The appropriate 7th character is to be added to each code from category S80

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Code annotations containing back-references to S80.242A

Back-references to S80

• Type 2 Excludes: M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")

Nearby codes

• S80.241 External constriction, right knee
• S80.241A External constriction, right knee, initial encounter
• S80.241D External constriction, right knee, subsequent encounter
• S80.241S External constriction, right knee, sequela
• S80.242 External constriction, left knee
• S80.242A External constriction, left knee, initial encounter (this code)
• S80.242D External constriction, left knee, subsequent encounter
• S80.242S External constriction, left knee, sequela
• S80.249 External constriction, unspecified knee
• S80.249A External constriction, unspecified knee, initial encounter
• S80.249D External constriction, unspecified knee, subsequent encounter