ICD-10-CM S90: Superficial injury of ankle, foot and toes

ICD-10-CM Diagnosis Code (2025)

Official Description for S90

Superficial injury of ankle, foot and toes

Coding Notes & Guidelines for S90

Excludes1: Not Coded Here

open bite of toe (S91.15-, S91.25-)

Excludes1: Not Coded Here

open bite of ankle (S91.05-)

Excludes1: Not Coded Here

open bite of foot (S91.35-)

Excludes2: Not Included Here

contusion of toes (S90.1-, S90.2-)

Inclusion Terms

Contusion of toe NOS

Inclusion Terms

Contusion of foot NOS

Inclusion Terms

Hair tourniquet syndrome of toe

Inclusion Terms

Splinter in the toe

Inclusion Terms

Splinter in the ankle

Inclusion Terms

Splinter in the foot

7th Character Guidance

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

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for S90):

S90.0 - Contusion of ankle S90.00 - Contusion of unspecified ankle S90.01 - Contusion of right ankle S90.02 - Contusion of left ankle S90.1 - Contusion of toe without damage to nail S90.11 - Contusion of great toe without damage to nail S90.111 - Contusion of right great toe without damage to nail S90.112 - Contusion of left great toe without damage to nail S90.119 - Contusion of unspecified great toe without damage to nail S90.12 - Contusion of lesser toe without damage to nail S90.121 - Contusion of right lesser toe(s) without damage to nail S90.122 - Contusion of left lesser toe(s) without damage to nail S90.129 - Contusion of unspecified lesser toe(s) without damage to nail S90.2 - Contusion of toe with damage to nail S90.21 - Contusion of great toe with damage to nail S90.211 - Contusion of right great toe with damage to nail S90.212 - Contusion of left great toe with damage to nail S90.219 - Contusion of unspecified great toe with damage to nail S90.22 - Contusion of lesser toe with damage to nail S90.221 - Contusion of right lesser toe(s) with damage to nail S90.222 - Contusion of left lesser toe(s) with damage to nail S90.229 - Contusion of unspecified lesser toe(s) with damage to nail S90.3 - Contusion of foot S90.30 - Contusion of unspecified foot S90.31 - Contusion of right foot S90.32 - Contusion of left foot S90.4 - Other superficial injuries of toe S90.41 - Abrasion of toe S90.411 - Abrasion, right great toe S90.412 - Abrasion, left great toe S90.413 - Abrasion, unspecified great toe S90.414 - Abrasion, right lesser toe(s) S90.415 - Abrasion, left lesser toe(s) S90.416 - Abrasion, unspecified lesser toe(s) S90.42 - Blister (nonthermal) of toe S90.421 - Blister (nonthermal), right great toe S90.422 - Blister (nonthermal), left great toe S90.423 - Blister (nonthermal), unspecified great toe S90.424 - Blister (nonthermal), right lesser toe(s) S90.425 - Blister (nonthermal), left lesser toe(s) S90.426 - Blister (nonthermal), unspecified lesser toe(s) S90.44 - External constriction of toe S90.441 - External constriction, right great toe S90.442 - External constriction, left great toe S90.443 - External constriction, unspecified great toe S90.444 - External constriction, right lesser toe(s) S90.445 - External constriction, left lesser toe(s) S90.446 - External constriction, unspecified lesser toe(s) S90.45 - Superficial foreign body of toe S90.451 - Superficial foreign body, right great toe S90.452 - Superficial foreign body, left great toe S90.453 - Superficial foreign body, unspecified great toe S90.454 - Superficial foreign body, right lesser toe(s) S90.455 - Superficial foreign body, left lesser toe(s) S90.456 - Superficial foreign body, unspecified lesser toe(s) S90.46 - Insect bite (nonvenomous) of toe S90.461 - Insect bite (nonvenomous), right great toe S90.462 - Insect bite (nonvenomous), left great toe S90.463 - Insect bite (nonvenomous), unspecified great toe S90.464 - Insect bite (nonvenomous), right lesser toe(s) S90.465 - Insect bite (nonvenomous), left lesser toe(s) S90.466 - Insect bite (nonvenomous), unspecified lesser toe(s) S90.47 - Other superficial bite of toe S90.471 - Other superficial bite of right great toe S90.472 - Other superficial bite of left great toe S90.473 - Other superficial bite of unspecified great toe S90.474 - Other superficial bite of right lesser toe(s) S90.475 - Other superficial bite of left lesser toe(s) S90.476 - Other superficial bite of unspecified lesser toe(s) S90.5 - Other superficial injuries of ankle S90.51 - Abrasion of ankle S90.511 - Abrasion, right ankle S90.512 - Abrasion, left ankle S90.519 - Abrasion, unspecified ankle S90.52 - Blister (nonthermal) of ankle S90.521 - Blister (nonthermal), right ankle S90.522 - Blister (nonthermal), left ankle S90.529 - Blister (nonthermal), unspecified ankle S90.54 - External constriction of ankle S90.541 - External constriction, right ankle S90.542 - External constriction, left ankle S90.549 - External constriction, unspecified ankle S90.55 - Superficial foreign body of ankle S90.551 - Superficial foreign body, right ankle S90.552 - Superficial foreign body, left ankle S90.559 - Superficial foreign body, unspecified ankle S90.56 - Insect bite (nonvenomous) of ankle S90.561 - Insect bite (nonvenomous), right ankle S90.562 - Insect bite (nonvenomous), left ankle S90.569 - Insect bite (nonvenomous), unspecified ankle S90.57 - Other superficial bite of ankle S90.571 - Other superficial bite of ankle, right ankle S90.572 - Other superficial bite of ankle, left ankle S90.579 - Other superficial bite of ankle, unspecified ankle S90.8 - Other superficial injuries of foot S90.81 - Abrasion of foot S90.811 - Abrasion, right foot S90.812 - Abrasion, left foot S90.819 - Abrasion, unspecified foot S90.82 - Blister (nonthermal) of foot S90.821 - Blister (nonthermal), right foot S90.822 - Blister (nonthermal), left foot S90.829 - Blister (nonthermal), unspecified foot S90.84 - External constriction of foot S90.841 - External constriction, right foot S90.842 - External constriction, left foot S90.849 - External constriction, unspecified foot S90.85 - Superficial foreign body of foot S90.851 - Superficial foreign body, right foot S90.852 - Superficial foreign body, left foot S90.859 - Superficial foreign body, unspecified foot S90.86 - Insect bite (nonvenomous) of foot S90.861 - Insect bite (nonvenomous), right foot S90.862 - Insect bite (nonvenomous), left foot S90.869 - Insect bite (nonvenomous), unspecified foot S90.87 - Other superficial bite of foot S90.871 - Other superficial bite of right foot S90.872 - Other superficial bite of left foot S90.879 - Other superficial bite of unspecified foot S90.9 - Unspecified superficial injury of ankle, foot and toe S90.91 - Unspecified superficial injury of ankle S90.911 - Unspecified superficial injury of right ankle S90.912 - Unspecified superficial injury of left ankle S90.919 - Unspecified superficial injury of unspecified ankle S90.92 - Unspecified superficial injury of foot S90.921 - Unspecified superficial injury of right foot S90.922 - Unspecified superficial injury of left foot S90.929 - Unspecified superficial injury of unspecified foot S90.93 - Unspecified superficial injury of toes S90.931 - Unspecified superficial injury of right great toe S90.932 - Unspecified superficial injury of left great toe S90.933 - Unspecified superficial injury of unspecified great toe S90.934 - Unspecified superficial injury of right lesser toe(s) S90.935 - Unspecified superficial injury of left lesser toe(s) S90.936 - Unspecified superficial injury of unspecified lesser toe(s)

About ICD-10-CM Code S90 (Superficial injury of ankle)

ICD-10-CM code S90 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM S90 became effective on October 1, 2024.

This page provides detailed information about S90 - Superficial injury of ankle, foot and toes. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Superficial injury of ankle related to foot and toes.