ICD-10 Diagnosis Code S56.999S

Inj unsp musc/fasc/tend at forearm level, unsp arm, sequela

Diagnosis Code S56.999S

ICD-10: S56.999S
Short Description: Inj unsp musc/fasc/tend at forearm level, unsp arm, sequela
Long Description: Other injury of unspecified muscles, fascia and tendons at forearm level, unspecified arm, sequela
This is the 2018 version of the ICD-10-CM diagnosis code S56.999S

Valid for Submission
The code S56.999S 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 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)


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