2021 ICD-10-CM Code S93.4

Sprain of ankle

Version 2021
Non-Billable Code

Not Valid for Submission

S93.4 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of sprain of ankle. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

ICD-10:S93.4
Short Description:Sprain of ankle
Long Description:Sprain of ankle

Code Classification

Specific Coding for Sprain of ankle

Header codes like S93.4 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for sprain of ankle:

  • S93.40 - Sprain of unspecified ligament of ankle
  • S93.401 - Sprain of unspecified ligament of right ankle
  • S93.401A - Sprain of unspecified ligament of right ankle, initial encounter
  • S93.401D - Sprain of unspecified ligament of right ankle, subsequent encounter
  • S93.401S - Sprain of unspecified ligament of right ankle, sequela
  • S93.402 - Sprain of unspecified ligament of left ankle
  • S93.402A - Sprain of unspecified ligament of left ankle, initial encounter
  • S93.402D - Sprain of unspecified ligament of left ankle, subsequent encounter
  • S93.402S - Sprain of unspecified ligament of left ankle, sequela
  • S93.409 - Sprain of unspecified ligament of unspecified ankle
  • S93.409A - Sprain of unspecified ligament of unspecified ankle, initial encounter
  • S93.409D - Sprain of unspecified ligament of unspecified ankle, subsequent encounter
  • S93.409S - Sprain of unspecified ligament of unspecified ankle, sequela
  • S93.41 - Sprain of calcaneofibular ligament
  • S93.411 - Sprain of calcaneofibular ligament of right ankle
  • S93.411A - Sprain of calcaneofibular ligament of right ankle, initial encounter
  • S93.411D - Sprain of calcaneofibular ligament of right ankle, subsequent encounter
  • S93.411S - Sprain of calcaneofibular ligament of right ankle, sequela
  • S93.412 - Sprain of calcaneofibular ligament of left ankle
  • S93.412A - Sprain of calcaneofibular ligament of left ankle, initial encounter
  • S93.412D - Sprain of calcaneofibular ligament of left ankle, subsequent encounter
  • S93.412S - Sprain of calcaneofibular ligament of left ankle, sequela
  • S93.419 - Sprain of calcaneofibular ligament of unspecified ankle
  • S93.419A - Sprain of calcaneofibular ligament of unspecified ankle, initial encounter
  • S93.419D - Sprain of calcaneofibular ligament of unspecified ankle, subsequent encounter
  • S93.419S - Sprain of calcaneofibular ligament of unspecified ankle, sequela
  • S93.42 - Sprain of deltoid ligament
  • S93.421 - Sprain of deltoid ligament of right ankle
  • S93.421A - Sprain of deltoid ligament of right ankle, initial encounter
  • S93.421D - Sprain of deltoid ligament of right ankle, subsequent encounter
  • S93.421S - Sprain of deltoid ligament of right ankle, sequela
  • S93.422 - Sprain of deltoid ligament of left ankle
  • S93.422A - Sprain of deltoid ligament of left ankle, initial encounter
  • S93.422D - Sprain of deltoid ligament of left ankle, subsequent encounter
  • S93.422S - Sprain of deltoid ligament of left ankle, sequela
  • S93.429 - Sprain of deltoid ligament of unspecified ankle
  • S93.429A - Sprain of deltoid ligament of unspecified ankle, initial encounter
  • S93.429D - Sprain of deltoid ligament of unspecified ankle, subsequent encounter
  • S93.429S - Sprain of deltoid ligament of unspecified ankle, sequela
  • S93.43 - Sprain of tibiofibular ligament
  • S93.431 - Sprain of tibiofibular ligament of right ankle
  • S93.431A - Sprain of tibiofibular ligament of right ankle, initial encounter
  • S93.431D - Sprain of tibiofibular ligament of right ankle, subsequent encounter
  • S93.431S - Sprain of tibiofibular ligament of right ankle, sequela
  • S93.432 - Sprain of tibiofibular ligament of left ankle
  • S93.432A - Sprain of tibiofibular ligament of left ankle, initial encounter
  • S93.432D - Sprain of tibiofibular ligament of left ankle, subsequent encounter
  • S93.432S - Sprain of tibiofibular ligament of left ankle, sequela
  • S93.439 - Sprain of tibiofibular ligament of unspecified ankle
  • S93.439A - Sprain of tibiofibular ligament of unspecified ankle, initial encounter
  • S93.439D - Sprain of tibiofibular ligament of unspecified ankle, subsequent encounter
  • S93.439S - Sprain of tibiofibular ligament of unspecified ankle, sequela
  • S93.49 - Sprain of other ligament of ankle
  • S93.491 - Sprain of other ligament of right ankle
  • S93.491A - Sprain of other ligament of right ankle, initial encounter
  • S93.491D - Sprain of other ligament of right ankle, subsequent encounter
  • S93.491S - Sprain of other ligament of right ankle, sequela
  • S93.492 - Sprain of other ligament of left ankle
  • S93.492A - Sprain of other ligament of left ankle, initial encounter
  • S93.492D - Sprain of other ligament of left ankle, subsequent encounter
  • S93.492S - Sprain of other ligament of left ankle, sequela
  • S93.499 - Sprain of other ligament of unspecified ankle
  • S93.499A - Sprain of other ligament of unspecified ankle, initial encounter
  • S93.499D - Sprain of other ligament of unspecified ankle, subsequent encounter
  • S93.499S - Sprain of other ligament of unspecified ankle, sequela

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code S93.4:


Type 2 Excludes

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.

Information for Patients


Ankle Injuries and Disorders

Your ankle bone and the ends of your two lower leg bones make up the ankle joint. Your ligaments, which connect bones to one another, stabilize and support it. Your muscles and tendons move it.

The most common ankle problems are sprains and fractures. A sprain is an injury to the ligaments. It may take a few weeks to many months to heal completely. A fracture is a break in a bone. You can also injure other parts of the ankle such as tendons, which join muscles to bone, and cartilage, which cushions your joints. Ankle sprains and fractures are common sports injuries.


[Learn More in MedlinePlus]

Sprains and Strains

A sprain is a stretched or torn ligament. Ligaments are tissues that connect bones at a joint. Falling, twisting, or getting hit can all cause a sprain. Ankle and wrist sprains are common. Symptoms include pain, swelling, bruising, and being unable to move your joint. You might feel a pop or tear when the injury happens.

A strain is a stretched or torn muscle or tendon. Tendons are tissues that connect muscle to bone. Twisting or pulling these tissues can cause a strain. Strains can happen suddenly or develop over time. Back and hamstring muscle strains are common. Many people get strains playing sports. Symptoms include pain, muscle spasms, swelling, and trouble moving the muscle.

At first, treatment of both sprains and strains usually involves resting the injured area, icing it, wearing a bandage or device that compresses the area, and medicines. Later treatment might include exercise and physical therapy.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases


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Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)