2024 ICD-10-CM Diagnosis Code T79.A19

Traumatic compartment syndrome of unspecified upper extremity

ICD-10-CM Code:
T79.A19
ICD-10 Code for:
Traumatic compartment syndrome of unsp upper extremity
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Certain early complications of trauma
      (T79)
      • Certain early complications of trauma, not elsewhere classified
        (T79)

T79.A19 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of traumatic compartment syndrome of unspecified upper extremity. 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.

Unspecified diagnosis codes like T79.A19 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding Applicable to Traumatic compartment syndrome of unsp upper extremity

Non-specific codes like T79.A19 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 traumatic compartment syndrome of unsp upper extremity:

  • Use T79.A19A for initial encounter - BILLABLE CODE

  • Use T79.A19D for subsequent encounter - BILLABLE CODE

  • Use T79.A19S for sequela - BILLABLE CODE

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Compartment syndrome of forearm due to traumatic injury
  • Compartment syndrome of hand due to traumatic injury
  • Compartment syndrome of lower leg due to traumatic injury
  • Compartment syndrome of upper arm due to traumatic injury
  • Compartment syndrome of upper limb due to traumatic injury
  • Extensor compartment syndrome of forearm due to traumatic injury
  • Triceps surae compartment syndrome due to traumatic injury

Coding Guidelines

The appropriate 7th character is to be added to each code from block Certain early complications of trauma, not elsewhere classified (T79). Use the following options for the aplicable episode of care:

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

Patient Education


Muscle Disorders

Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.

Causes of muscle disorders include:

  • Injury or overuse, such as sprains or strains, cramps or tendinitis
  • A genetic disorder, such as muscular dystrophy
  • Some cancers
  • Inflammation, such as myositis
  • Diseases of nerves that affect muscles
  • Infections
  • Certain medicines

Sometimes the cause of muscle disorders is unknown.


[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.