S90.442A External constriction, left great toe, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S90.442 with 7th character A (initial encounter).

Applies from S90 Superficial injury of ankle, foot and toes

7th character note

• The appropriate 7th character is to be added to each code from category S90

7th character required

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

Applies from S90.44 External constriction of toe

Applicable to

• Hair tourniquet syndrome of toe

Code annotations containing back-references to S90.442A

Back-references to S90

• Type 2 Excludes: S80 Superficial injury of knee and lower leg ("superficial injury of ankle and foot (S90.-)")

Nearby codes

• S90.441 External constriction, right great toe
• S90.441A External constriction, right great toe, initial encounter
• S90.441D External constriction, right great toe, subsequent encounter
• S90.441S External constriction, right great toe, sequela
• S90.442 External constriction, left great toe
• S90.442A External constriction, left great toe, initial encounter (this code)
• S90.442D External constriction, left great toe, subsequent encounter
• S90.442S External constriction, left great toe, sequela
• S90.443 External constriction, unspecified great toe
• S90.443A External constriction, unspecified great toe, initial encounter
• S90.443D External constriction, unspecified great toe, subsequent encounter