2027 ICD-10-CM Diagnosis Code S93.411SSprain of calcaneofibular ligament of right ankle, sequela
S93.411S is a billable ICD-10-CM diagnosis code for sprain of calcaneofibular ligament of right ankle, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 562 through 563. The code is exempt from POA reporting. Coders also document this condition as disorder of ligament of right ankle joint. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
This medical diagnosis code is frequently used in Orthopedics medical specialties to designate conditions such selected sprains rotator cuff, cruciate ligament, and ankle.
Code Identity
Code Classification
Present on Admission (POA)Billing
S93.411S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Injuries to the ankle and foot (S90-S99).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Disorder of ligament of right ankle joint
- Sprain of calcaneofibular ligament
- Sprain of calcaneofibular ligament of right ankle joint
- Sprain of lateral ligament of right ankle joint
- Sprain of right ankle
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Dislocation and sprain of joints and ligaments at ankle, foot and toe level (S93). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to S93.411S: its own notes plus those printed at S93.4, S93, block S90-S99, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- avulsion of joint or ligament of ankle, foot and toe
- laceration of cartilage, joint or ligament of ankle, foot and toe
- sprain of cartilage, joint or ligament of ankle, foot and toe
- traumatic hemarthrosis of joint or ligament of ankle, foot and toe
- traumatic rupture of joint or ligament of ankle, foot and toe
- traumatic subluxation of joint or ligament of ankle, foot and toe
- traumatic tear of joint or ligament of ankle, foot and toe
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- strain of muscle and tendon of ankle and foot (S96.-)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify any retained foreign body, if applicable (Z18.-)
Code Also
A second code may be needed to fully describe the condition; the note gives no sequencing direction.
- any associated open wound
Notes
General instructions on how these codes are used.
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
7th Character
Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.
- The appropriate 7th character is to be added to each code from category S93
- Ainitial encounter
- Dsubsequent encounter
- Ssequela this code
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name S93.411S, its category, or a range that includes it.
Excludes2 1
These codes carry an Excludes2 note naming S93.411S: its condition is not part of those codes, and both may be reported when the patient has both.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
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.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S93.411S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S93.411SOverview
What is the ICD-10 code for sprain of calcaneofibular ligament of right ankle, sequela?
The ICD-10-CM code for sprain of calcaneofibular ligament of right ankle, sequela is S93.411S (sometimes written as S93411S). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is S93.411S (Sprain of calcaneofibular ligament of right ankle) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report sprain of calcaneofibular ligament of right ankle, sequela on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What does the 7th character S in S93.411S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the sprain of calcaneofibular ligament of right ankle itself has resolved, not the original event.
What MS-DRG does S93.411S group to?
When sprain of calcaneofibular ligament of right ankle, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 563, 562, with relative weights from 0.8982 to 1.3981 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S93.411S exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for sprain of calcaneofibular ligament of right ankle, sequela on inpatient claims. The code appears in the Injuries to the ankle and foot (S90-S99) range of the CMS exempt list.
