S91.256A Open bite of unspecified lesser toe(s) with damage to nail, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S91.256 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

Applies from S91.25 Open bite of toe with damage to nail

Applicable to

• Bite of toe with damage to nail NOS

Excludes1 (never code together)

• superficial bite of toe (S90.46-, S90.47-)

Code annotations containing back-references to S91.256A

Back-references to S91.25

• Type 1 Excludes: S90.47 Other superficial bite of toe ("open bite of toe (S91.15-, S91.25-)")

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.-)")

Nearby codes

• S91.255 Open bite of left lesser toe(s) with damage to nail
• S91.255A Open bite of left lesser toe(s) with damage to nail, initial encounter
• S91.255D Open bite of left lesser toe(s) with damage to nail, subsequent encounter
• S91.255S Open bite of left lesser toe(s) with damage to nail, sequela
• S91.256 Open bite of unspecified lesser toe(s) with damage to nail
• S91.256A Open bite of unspecified lesser toe(s) with damage to nail, initial encounter (this code)
• S91.256D Open bite of unspecified lesser toe(s) with damage to nail, subsequent encounter
• S91.256S Open bite of unspecified lesser toe(s) with damage to nail, sequela
• S91.259 Open bite of unspecified toe(s) with damage to nail
• S91.259A Open bite of unspecified toe(s) with damage to nail, initial encounter
• S91.259D Open bite of unspecified toe(s) with damage to nail, subsequent encounter