S80.842A External constriction, left lower leg, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S80.842 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 S80.842A

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

• S80.841 External constriction, right lower leg
• S80.841A External constriction, right lower leg, initial encounter
• S80.841D External constriction, right lower leg, subsequent encounter
• S80.841S External constriction, right lower leg, sequela
• S80.842 External constriction, left lower leg
• S80.842A External constriction, left lower leg, initial encounter (this code)
• S80.842D External constriction, left lower leg, subsequent encounter
• S80.842S External constriction, left lower leg, sequela
• S80.849 External constriction, unspecified lower leg
• S80.849A External constriction, unspecified lower leg, initial encounter
• S80.849D External constriction, unspecified lower leg, subsequent encounter