ICD-10 Diagnosis Code S56.412A

Strain extensor musc/fasc/tend l idx fngr at forarm lv, init

Diagnosis Code S56.412A

ICD-10: S56.412A
Short Description: Strain extensor musc/fasc/tend l idx fngr at forarm lv, init
Long Description: Strain of extensor muscle, fascia and tendon of left index finger at forearm level, initial encounter
This is the 2017 version of the ICD-10-CM diagnosis code S56.412A

Valid for Submission
The code S56.412A is valid for submission for HIPAA-covered transactions.

Code Classification
  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Injuries to the elbow and forearm (S50-S59)
      • Injury of muscle, fascia and tendon at forearm level (S56)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code S56.412A is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)

  • 562 - FRACTURE SPRAIN, STRAIN AND DISLOCATION EXCEPT FEMUR, HIP, PELVIS AND THIGH WITH MCC
  • 563 - FRACTURE SPRAIN, STRAIN AND DISLOCATION EXCEPT FEMUR, HIP, PELVIS AND THIGH WITHOUT MCC

Information for Patients


Arm Injuries and Disorders

Of the 206 bones in your body, 3 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
  • Broken bones

Some nerve problems, arthritis, or cancers can affect the entire arm and cause pain, spasms, swelling and trouble moving. You may also have problems or injure specific parts of your arm, such as your hand, wrist, elbow or shoulder.

  • Arm CT scan (Medical Encyclopedia)
  • Brachial plexopathy (Medical Encyclopedia)
  • Radial head fracture - aftercare (Medical Encyclopedia)
  • Radial nerve dysfunction (Medical Encyclopedia)


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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

  • Ankle sprain - aftercare (Medical Encyclopedia)
  • Elbow sprain -- aftercare (Medical Encyclopedia)
  • Foot sprain - aftercare (Medical Encyclopedia)
  • Hamstring strain - aftercare (Medical Encyclopedia)
  • Hip flexor strain -- aftercare (Medical Encyclopedia)
  • Sprains (Medical Encyclopedia)
  • Strains (Medical Encyclopedia)
  • Tendon repair (Medical Encyclopedia)
  • Wrist sprain - aftercare (Medical Encyclopedia)


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