Version 2024

2024 ICD-10-CM Diagnosis Code S90.44

External constriction of toe

ICD-10-CM Code:
S90.44
ICD-10 Code for:
External constriction of toe
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Injuries to the ankle and foot
      (S90-S99)
      • Superficial injury of ankle, foot and toes
        (S90)

S90.44 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of external constriction of toe. The code is not specific and is NOT valid for the year 2024 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.

Specific Coding Applicable to External constriction of toe

Non-specific codes like S90.44 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for external constriction of toe:

  • S90.441 for External constriction, right great toe - NON-BILLABLE CODE

  • Use S90.441A for initial encounter - BILLABLE CODE

  • Use S90.441D for subsequent encounter - BILLABLE CODE

  • Use S90.441S for sequela - BILLABLE CODE

  • S90.442 for External constriction, left great toe - NON-BILLABLE CODE

  • Use S90.442A for initial encounter - BILLABLE CODE

  • Use S90.442D for subsequent encounter - BILLABLE CODE

  • Use S90.442S for sequela - BILLABLE CODE

  • S90.443 for External constriction, unspecified great toe - NON-BILLABLE CODE

  • Use S90.443A for initial encounter - BILLABLE CODE

  • Use S90.443D for subsequent encounter - BILLABLE CODE

  • Use S90.443S for sequela - BILLABLE CODE

  • S90.444 for External constriction, right lesser toe(s) - NON-BILLABLE CODE

  • Use S90.444A for initial encounter - BILLABLE CODE

  • Use S90.444D for subsequent encounter - BILLABLE CODE

  • Use S90.444S for sequela - BILLABLE CODE

  • S90.445 for External constriction, left lesser toe(s) - NON-BILLABLE CODE

  • Use S90.445A for initial encounter - BILLABLE CODE

  • Use S90.445D for subsequent encounter - BILLABLE CODE

  • Use S90.445S for sequela - BILLABLE CODE

  • S90.446 for External constriction, unspecified lesser toe(s) - NON-BILLABLE CODE

  • Use S90.446A for initial encounter - BILLABLE CODE

  • Use S90.446D for subsequent encounter - BILLABLE CODE

  • Use S90.446S for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Superficial injury of ankle, foot and toes (S90). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Hair tourniquet syndrome of toe

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Patient Education


Wounds and Injuries

An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening. Injuries can happen at work or play, indoors or outdoors, driving a car, or walking across the street.

Wounds are injuries that break the skin or other body tissues. They include cuts, scrapes, scratches, and punctured skin. They often happen because of an accident, but surgery, sutures, and stitches also cause wounds. Minor wounds usually aren't serious, but it is important to clean them. Serious and infected wounds may require first aid followed by a visit to your doctor. You should also seek attention if the wound is deep, you cannot close it yourself, you cannot stop the bleeding or get the dirt out, or it does not heal.

Other common types of injuries include:

  • Animal bites
  • Bruises
  • Burns
  • Dislocations
  • Electrical injuries
  • Fractures (broken bones)
  • Sprains and strains

[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.