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  6. 2024 ICD-10-CM Code S56.41

2024 ICD-10-CM Diagnosis Code S56.41

Strain of extensor muscle, fascia and tendon of other and unspecified finger at forearm level

ICD-10-CM Code:
S56.41
ICD-10 Code for:
Strain extensor musc/fasc/tend and unsp finger at forarm lv
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Injuries to the elbow and forearm
      (S50-S59)
      • Injury of muscle, fascia and tendon at forearm level
        (S56)

S56.41 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of strain of extensor muscle, fascia and tendon of other and unspecified finger at forearm level. 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 S56.41 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 Strain extensor musc/fasc/tend and unsp finger at forarm lv

Non-specific codes like S56.41 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 strain extensor musc/fasc/tend and unsp finger at forarm lv:

  • S56.411 for Strain of extensor muscle, fascia and tendon of right index finger at forearm level - NON-BILLABLE CODE

  • Use S56.411A for initial encounter - BILLABLE CODE

  • Use S56.411D for subsequent encounter - BILLABLE CODE

  • Use S56.411S for sequela - BILLABLE CODE

  • S56.412 for Strain of extensor muscle, fascia and tendon of left index finger at forearm level - NON-BILLABLE CODE

  • Use S56.412A for initial encounter - BILLABLE CODE

  • Use S56.412D for subsequent encounter - BILLABLE CODE

  • Use S56.412S for sequela - BILLABLE CODE

  • S56.413 for Strain of extensor muscle, fascia and tendon of right middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.413A for initial encounter - BILLABLE CODE

  • Use S56.413D for subsequent encounter - BILLABLE CODE

  • Use S56.413S for sequela - BILLABLE CODE

  • S56.414 for Strain of extensor muscle, fascia and tendon of left middle finger at forearm level - NON-BILLABLE CODE

  • Use S56.414A for initial encounter - BILLABLE CODE

  • Use S56.414D for subsequent encounter - BILLABLE CODE

  • Use S56.414S for sequela - BILLABLE CODE

  • S56.415 for Strain of extensor muscle, fascia and tendon of right ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.415A for initial encounter - BILLABLE CODE

  • Use S56.415D for subsequent encounter - BILLABLE CODE

  • Use S56.415S for sequela - BILLABLE CODE

  • S56.416 for Strain of extensor muscle, fascia and tendon of left ring finger at forearm level - NON-BILLABLE CODE

  • Use S56.416A for initial encounter - BILLABLE CODE

  • Use S56.416D for subsequent encounter - BILLABLE CODE

  • Use S56.416S for sequela - BILLABLE CODE

  • S56.417 for Strain of extensor muscle, fascia and tendon of right little finger at forearm level - NON-BILLABLE CODE

  • Use S56.417A for initial encounter - BILLABLE CODE

  • Use S56.417D for subsequent encounter - BILLABLE CODE

  • Use S56.417S for sequela - BILLABLE CODE

  • S56.418 for Strain of extensor muscle, fascia and tendon of left little finger at forearm level - NON-BILLABLE CODE

  • Use S56.418A for initial encounter - BILLABLE CODE

  • Use S56.418D for subsequent encounter - BILLABLE CODE

  • Use S56.418S for sequela - BILLABLE CODE

  • S56.419 for Strain of extensor muscle, fascia and tendon of finger, unspecified finger at forearm level - NON-BILLABLE CODE

  • Use S56.419A for initial encounter - BILLABLE CODE

  • Use S56.419D for subsequent encounter - BILLABLE CODE

  • Use S56.419S for sequela - BILLABLE CODE

Coding Guidelines

The appropriate 7th character is to be added to each code from block Injury of muscle, fascia and tendon at forearm level (S56). Use the following options for the aplicable episode of care:

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

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


Arm Injuries and Disorders

Of the 206 bones in your body, three of them are in your arm: the humerus, radius, and ulna. Your arms are also made up of muscles, joints, tendons, and other connective tissue. Injuries to any of these parts of the arm can occur during sports, a fall, or an accident.

Types of arm injuries include :

  • Tendinitis and bursitis
  • Sprains
  • Dislocations
  • Fractures (broken bones)
  • Nerve problems
  • Osteoarthritis

You may also have problems or injure specific parts of your arm, such as your hand, wrist, elbow, or shoulder.


[Learn More in MedlinePlus]

Sprains and Strains

A sprain is a stretched or torn ligament. Ligaments are tissues that connect bones at a joint. Falling, twisting, or getting hit can all cause a sprain. Ankle and wrist sprains are common. Symptoms include pain, swelling, bruising, and being unable to move your joint. You might feel a pop or tear when the injury happens.

A strain is a stretched or torn muscle or tendon. Tendons are tissues that connect muscle to bone. Twisting or pulling these tissues can cause a strain. Strains can happen suddenly or develop over time. Back and hamstring muscle strains are common. Many people get strains playing sports. Symptoms include pain, muscle spasms, swelling, and trouble moving the muscle.

At first, treatment of both sprains and strains usually involves resting the injured area, icing it, wearing a bandage or device that compresses the area, and medicines. Later treatment might include exercise and physical therapy.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases


[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.