ICD-10-CM Tabular Index · Chapter 19 · FY 2026 S90

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

The S90 code range covers superficial injury of ankle, foot and toes with 442 ICD-10-CM diagnosis codes. 306 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
442
Diagnosis Codes
306
Billable Codes
S90
Code Range
S90–S99
Parent Section

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

ICD-10-CM

Codes in the S90 Range 442 codes · 306 billable

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

Clinical Terms in This Code Range

Definitions from the National Library of Medicine for conditions coded in the S90 range.

Blister

Visible accumulations of fluid within or beneath the epidermis.

Herpes Labialis

Herpes simplex, caused by type 1 virus, primarily spread by oral secretions and usually occurring as a concomitant of fever. It may also develop in the absence of fever or prior illness. It commonly involves the facial region, especially the lips and the nares. (Dorland, 27th ed.)

About the S90 Code Range

The ICD-10 code S90 category covers a range of superficial injuries to the ankle, foot, and toes, including contusions, abrasions, blisters, foreign bodies, insect bites, external constrictions, and superficial bites. These codes specify the precise location, laterality, severity, and nature of the injury, aiding clear identification and documentation.

This section includes detailed codes for contusions (bruises or hematomas) of the ankle (S90.00 series) and toes, distinguishing injuries with or without nail damage, such as S90.111A for contusion of the right great toe without nail damage, also known as a hematoma of the toe. Abrasions (scrapes or infected abrasions) are captured with codes like S90.411A for right great toe abrasions. The codes also cover nonthermal blisters (S90.42 series), superficial foreign bodies like splinters (S90.45), nonvenomous insect bites (S90.46), and other superficial bites (S90.47). The codes are further subdivided by side (right, left, unspecified) and encounter type (initial, subsequent, sequela), enabling precise billing and record-keeping for healthcare providers managing these common but diverse superficial injuries.

Questions About This Page

How many billable codes are in the S90 range?

Of the 442 codes in this range, 306 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

What does the S90 range classify?

The range classifies superficial injury of ankle, foot and toes. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

All ICD-10-CM ChaptersAll of Chapter 19ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes

Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.