S99
Non-billableOther and unspecified injuries of ankle and foot
Other and unspecified injuries of ankle and foot
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
Use Additional Code
Additional codes that should follow this code
Child Codes (5)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(1)
Frequently Asked Questions
What is the ICD-10 code for other and unspecified injuries of ankle and foot?
The ICD-10-CM code for other and unspecified injuries of ankle and foot is S99. The full clinical description is "Other and unspecified injuries of ankle and foot". S99 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code S99 mean?
ICD-10-CM code S99 represents “Other and unspecified injuries of ankle and foot”. It is classified under Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes and is a non-billable header code. Use a more specific child code for billing purposes.
Is S99 a billable code?
No, S99 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 5 child codes under S99.
What chapter is S99 in?
S99 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).
What codes cannot be used with S99?
S99 has Excludes1 notes indicating codes that cannot be used together with it, including: birth trauma (P10-P15); obstetric trauma (O70-O71).
What are the subcategories under S99?
S99 has 5 child codes, including: S99.0 (Physeal fracture of calcaneus), S99.1 (Physeal fracture of metatarsal), S99.2 (Physeal fracture of phalanx of toe), S99.8 (Other specified injuries of ankle and foot), and 1 more.
Are additional codes required with S99?
Yes, when using S99, also report: any retained foreign body, if applicable (Z18.-).
What are the UMLS CUIs for S99?
S99 is linked to 1 UMLS Concept Unique Identifier: C0495979. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does S99 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other and unspecified injuries of ankle and foot affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of S99?
S99 maps to the ICD-11 code: ND1Z (Injuries to the ankle or foot, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.