2026 ICD-10-CM Diagnosis Code S93.139ASubluxation of interphalangeal joint of unspecified toe(s), initial encounter

ICD-10-CM Codes›S00–T88›S90-S99›S93

ICD-10-CM S93.139A
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S93.139A is a billable ICD-10-CM diagnosis code for subluxation of interphalangeal joint of unspecified toe(s), initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 562 through 563, 963 through 965. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Dislocations, initial encounter.

Code Identity

ICD-10-CM Code
S93.139A
Billable Status
Yes — Valid for Submission
Code Describes
Subluxation of interphalangeal joint of unspecified toe(s), initial encounter
Short Description
Subluxation of interphalangeal joint of unsp toe(s), init
Parent Code
S93.139
Subluxation of interphalangeal joint of unspecified toe(s)

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 CodeS93.139ASubluxation of interphalangeal joint of unspecified toe(s), initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Closed fracture dislocation of interphalangeal joint of multiple toes
  • Closed fracture dislocation of interphalangeal joint of toe
  • Closed fracture subluxation digit
  • Closed fracture subluxation of foot
  • Closed fracture subluxation of interphalangeal joint of multiple toes
  • Closed fracture subluxation of interphalangeal joint of single toe
  • Closed traumatic dislocation multiple digits
  • Closed traumatic dislocation of interphalangeal joint of toe
  • Closed traumatic dislocation of single interphalangeal joint of toe
  • Closed traumatic dislocation toe, interphalangeal joint, multiple
  • Closed traumatic subluxation multiple digits
  • Closed traumatic subluxation of multiple interphalangeal joints of toe
  • Closed traumatic subluxation of single interphalangeal joint of toe
  • Closed traumatic subluxation, foot
  • Fracture subluxation of interphalangeal joint of toe
  • Open fracture dislocation multiple digits
  • Open fracture dislocation of interphalangeal joint of multiple toes
  • Open fracture dislocation of interphalangeal joint of toe
  • Open fracture subluxation digit
  • Open fracture subluxation of foot
  • Open fracture subluxation of interphalangeal joint of multiple toes
  • Open fracture subluxation of interphalangeal joint of single toe
  • Open fracture subluxation of multiple digits
  • Open traumatic dislocation multiple digits
  • Open traumatic dislocation of single interphalangeal joint of toe
  • Open traumatic subluxation of multiple interphalangeal joints of toe
  • Open traumatic subluxation of single interphalangeal joint of toe

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 2026, published by CMS and the National Center for Health Statistics.

Clinical ClassificationClinical

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

CCSR INJ007
Dislocations, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Dislocations

Dislocations are joint injuries that force the ends of your bones out of position. The cause is often a fall or a blow, sometimes from playing a contact sport. You can dislocate your ankles, knees, shoulders, hips, elbows and jaw. You can also dislocate your finger and toe joints.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert S93.139A to ICD-9-CMHistory

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

ICD-9-CM
838.06 Disl interphalan foot-cl
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About S93.139AOverview

Is S93.139A (Subluxation of interphalangeal joint of unspecified toe(s)) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report subluxation of interphalangeal joint of unspecified toe(s), initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character A in S93.139A mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for subluxation of interphalangeal joint of unspecified toe(s), such as an emergency visit or first evaluation.

What MS-DRG does S93.139A group to?

When subluxation of interphalangeal joint of unspecified toe(s), initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 562, 563, 963, 964, 965, with relative weights from 0.8955 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of S93.139A?

Under the General Equivalence Mappings, subluxation of interphalangeal joint of unspecified toe(s), initial encounter converts to ICD-9-CM 838.06 (disl interphalan foot-cl). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.