2027 ICD-10-CM Diagnosis Code S93.311SSubluxation of tarsal joint of right foot, sequela

ICD-10-CM Codes›S00–T88›S90-S99›S93

ICD-10-CM S93.311S
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

S93.311S is a billable ICD-10-CM diagnosis code for subluxation of tarsal joint of right foot, 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 subluxation of intertarsal joint of right foot. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.

Code Identity

ICD-10-CM Code
S93.311S
Billable Status
Yes — Valid for Submission
Code Describes
Subluxation of tarsal joint of right foot, sequela
Short Description
Subluxation of tarsal joint of right foot, sequela
Same as the full description in the CMS dataset.
Parent Code
S93.311
Subluxation of tarsal joint of right foot

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS90-S99Injuries to the ankle and foot
CategoryS93Dislocation and sprain of joints and ligaments at ankle, foot and toe level
This CodeS93.311SSubluxation of tarsal joint of right foot, sequela

Present on Admission (POA)Billing

S93.311S 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.

  • Subluxation of intertarsal joint of right foot
  • Subluxation of joint of right foot

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 S93.311S: its own notes plus those printed at S93.3, 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.

From S93 Dislocation and sprain of joints and ligaments at ankle, foot and toe level applies to 336 codes
  • 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.

From S93.3 Subluxation and dislocation of foot applies to 72 codes
From S93 Dislocation and sprain of joints and ligaments at ankle, foot and toe level applies to 336 codes
  • strain of muscle and tendon of ankle and foot (S96.-)
From Block S90-S99 Injuries to the ankle and foot applies to 3,324 codes
  • burns and corrosions (T20-T32)
  • fracture of ankle and malleolus (S82.-)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • 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.

From S93 Dislocation and sprain of joints and ligaments at ankle, foot and toe level applies to 336 codes
  • any associated open wound

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • 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.

From S93 Dislocation and sprain of joints and ligaments at ankle, foot and toe level applies to 336 codes
  • The appropriate 7th character is to be added to each code from category S93
Values for category S93 Encounter: Initial, Subsequent, Sequela
  • 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 S93.311S, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming S93.311S: its condition is not part of those codes, and both may be reported when the patient has both.

  • S96 Injury of muscle and tendon at ankle and foot level
    sprain of joints and ligaments of ankle and foot (S93.-) names S93.-, which includes this code

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ073
Injury, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes

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 S93.311S to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
905.6 Late effect dislocation
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S93.311SOverview

What is the ICD-10 code for subluxation of tarsal joint of right foot, sequela?

The ICD-10-CM code for subluxation of tarsal joint of right foot, sequela is S93.311S (sometimes written as S93311S). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is S93.311S (Subluxation of tarsal joint of right foot) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report subluxation of tarsal joint of right foot, sequela on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What does the 7th character S in S93.311S mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the subluxation of tarsal joint of right foot itself has resolved, not the original event.

What MS-DRG does S93.311S group to?

When subluxation of tarsal joint of right foot, 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 S93.311S 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 subluxation of tarsal joint of right foot, sequela on inpatient claims. The code appears in the Injuries to the ankle and foot (S90-S99) range of the CMS exempt list.