S93.431A Sprain of tibiofibular ligament of right ankle, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S93.431 with 7th character A (initial encounter).

Applies from S93 Dislocation and sprain of joints and ligaments at ankle, foot and toe level

Includes

• avulsion of joint or ligament of ankle, foot and toe
• laceration of cartilage, joint or ligament of ankle, foot and toe
• sprain of cartilage, joint or ligament of ankle, foot and toe
• traumatic hemarthrosis of joint or ligament of ankle, foot and toe
• traumatic rupture of joint or ligament of ankle, foot and toe
• traumatic subluxation of joint or ligament of ankle, foot and toe
• traumatic tear of joint or ligament of ankle, foot and toe

Excludes2 (not included here)

• strain of muscle and tendon of ankle and foot (S96.-)

Code also

• any associated open wound

7th character note

• The appropriate 7th character is to be added to each code from category S93

7th character required

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

Applies from S93.4 Sprain of ankle

Excludes2 (not included here)

• injury of Achilles tendon (S86.0-)

Code annotations containing back-references to S93.431A

Back-references to S93

• Type 2 Excludes: S96 Injury of muscle and tendon at ankle and foot level ("sprain of joints and ligaments of ankle and foot (S93.-)")

Nearby codes

• S93.429A Sprain of deltoid ligament of unspecified ankle, initial encounter
• S93.429D Sprain of deltoid ligament of unspecified ankle, subsequent encounter
• S93.429S Sprain of deltoid ligament of unspecified ankle, sequela
• S93.43 Sprain of tibiofibular ligament
• S93.431 Sprain of tibiofibular ligament of right ankle
• S93.431A Sprain of tibiofibular ligament of right ankle, initial encounter (this code)
• S93.431D Sprain of tibiofibular ligament of right ankle, subsequent encounter
• S93.431S Sprain of tibiofibular ligament of right ankle, sequela
• S93.432 Sprain of tibiofibular ligament of left ankle
• S93.432A Sprain of tibiofibular ligament of left ankle, initial encounter
• S93.432D Sprain of tibiofibular ligament of left ankle, subsequent encounter