S90.549
Non-billableExternal constriction, unspecified ankle
External constriction, unspecified ankle
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 (3)
Also Known As / Clinical Terms(1)
Frequently Asked Questions
What is the ICD-10 code for external constriction, unspecified ankle?
The ICD-10-CM code for external constriction, unspecified ankle is S90.549. The full clinical description is "External constriction, unspecified ankle". S90.549 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code S90.549 mean?
ICD-10-CM code S90.549 represents “External constriction, unspecified ankle”. 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 S90.549 a billable code?
No, S90.549 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under S90.549.
What chapter is S90.549 in?
S90.549 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).
What codes cannot be used with S90.549?
S90.549 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 S90.549?
S90.549 has 3 child codes, including: S90.549A (External constriction, unspecified ankle, initial encounter), S90.549D (External constriction, unspecified ankle, subs encntr), S90.549S (External constriction, unspecified ankle, sequela).
Are additional codes required with S90.549?
Yes, when using S90.549, also report: any retained foreign body, if applicable (Z18.-).
What are the UMLS CUIs for S90.549?
S90.549 is linked to 1 UMLS Concept Unique Identifier: C2866317. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does S90.549 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like external constriction, unspecified ankle 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 S90.549?
There is no direct ICD-11 mapping available for S90.549 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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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.