S91.231A Puncture wound without foreign body of right great toe with damage to nail, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S91.231 with 7th character A (initial encounter).

Applies from S91 Open wound of ankle, foot and toes

Excludes1 (never code together)

• open fracture of ankle, foot and toes (S92.-with 7th character B)
• traumatic amputation of ankle and foot (S98.-)

Code also

• any associated wound infection

7th character note

• The appropriate 7th character is to be added to each code from category S91

7th character required

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

Code annotations containing back-references to S91.231A

Back-references to S91

• Type 2 Excludes: S71 Open wound of hip and thigh ("open wound of ankle, foot and toes (S91.-)")
• Type 2 Excludes: S81 Open wound of knee and lower leg ("open wound of ankle and foot (S91.-)")
• Code Also: S94 Injury of nerves at ankle and foot level ("any associated open wound (S91.-)")
• Code Also: S95 Injury of blood vessels at ankle and foot level ("any associated open wound (S91.-)")
• Code Also: S96 Injury of muscle and tendon at ankle and foot level ("any associated open wound (S91.-)")

Diagnosis Index entries for S91.231A

• Puncture › toe (s) › great › right › with › damage to nail

Nearby codes

• S91.229A Laceration with foreign body of unspecified toe(s) with damage to nail, initial encounter
• S91.229D Laceration with foreign body of unspecified toe(s) with damage to nail, subsequent encounter
• S91.229S Laceration with foreign body of unspecified toe(s) with damage to nail, sequela
• S91.23 Puncture wound without foreign body of toe with damage to nail
• S91.231 Puncture wound without foreign body of right great toe with damage to nail
• S91.231A Puncture wound without foreign body of right great toe with damage to nail, initial encounter (this code)
• S91.231D Puncture wound without foreign body of right great toe with damage to nail, subsequent encounter
• S91.231S Puncture wound without foreign body of right great toe with damage to nail, sequela
• S91.232 Puncture wound without foreign body of left great toe with damage to nail
• S91.232A Puncture wound without foreign body of left great toe with damage to nail, initial encounter
• S91.232D Puncture wound without foreign body of left great toe with damage to nail, subsequent encounter