ICD-10 Diagnosis Code S56.3

Injury of extn/abdr musc/fasc/tend of thumb at forearm level

Diagnosis Code S56.3

ICD-10: S56.3
Short Description: Injury of extn/abdr musc/fasc/tend of thumb at forearm level
Long Description: Injury of extensor or abductor muscles, fascia and tendons of thumb at forearm level
This is the 2018 version of the ICD-10-CM diagnosis code S56.3

Not Valid for Submission
The code S56.3 is a "header" and not 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 Patients


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
  • 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.

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


[Read More]
Previous Code
Previous Code S56.299S
Next Code
S56.30 Next Code