Injuries to the ankle and foot (S90-S99) ICD-10-CM
The S90–S99 section covers injuries to the ankle and foot with 4,342 ICD-10-CM diagnosis codes, of which 3,324 are billable in fiscal year 2026. The section is organized into the 10 code ranges listed below.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Code Ranges in This Section 10 ranges · 4,342 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the S90–S99 Code Range
ICD-10 codes S90-S99 categorize a wide array of injuries to the ankle, foot, and toes. These codes specify types of superficial injuries, open wounds, fractures, dislocations, sprains, nerve damage, blood vessel injuries, muscle and tendon injuries, crushing injuries, and traumatic amputations, offering detailed distinctions according to location, laterality, and severity.
This code block covers conditions ranging from contusions (also known as hematoma or bruises) of the ankle and toes (S90 codes) to various types of open wounds and lacerations detailed by specific toes and involvement of nails (S91). It also includes a comprehensive classification of fractures of the foot and toes excluding the ankle, such as fractures of the calcaneus, talus, metatarsals, and phalanges, with subtle differentiation for displacement, laterality, and healing stage (S92). Joint dislocations and sprains of ankles, toes, and their ligaments—like the calcaneofibular and deltoid ligaments—are covered under S93. Nerve injuries (for example, lateral and medial plantar nerve injuries) are specified in S94, while S95 deals with blood vessel injuries including the dorsal and plantar arteries of the foot.
Muscle and tendon injuries at the ankle and foot level, including strains, lacerations, and other specified injuries, are found under S96. Crushing injuries affecting the ankle, toes, or foot are categorized within S97. Traumatic amputations, whether partial or complete and involving the foot, ankle, or toes, are captured extensively in S98. Finally, S99 covers other and unspecified injuries to the ankle and foot, including physeal (growth plate) fractures critical for pediatric assessments.
For medical coders, recognizing synonyms like "hematoma of ankle," "open wound of right great toe," or "rupture of plantar fascia" links these common clinical terms to the precise ICD-10 codes such as S90.00XA for ankle contusion or S96.811A for strain of plantar fascia. Documentation of injury timing is possible with seventh-character extensions indicating initial encounter, subsequent visits, or sequelae. This detailed range facilitates exact coding for a broad spectrum of foot and ankle injuries, supporting accurate clinical record-keeping and treatment planning.
Questions About This Page
How many codes are in the S90-S99 range?
The S90-S99 range contains 4,342 ICD-10-CM diagnosis codes in FY 2026. 3,324 of them are billable, and the rest are category headers that organize the section.
What conditions does S90-S99 cover?
The range covers injuries to the ankle and foot. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
