ICD-10 Diagnosis Code S46.399A

Inj muscle, fascia and tendon of triceps, unsp arm, init

Diagnosis Code S46.399A

ICD-10: S46.399A
Short Description: Inj muscle, fascia and tendon of triceps, unsp arm, init
Long Description: Other injury of muscle, fascia and tendon of triceps, unspecified arm, initial encounter
This is the 2017 version of the ICD-10-CM diagnosis code S46.399A

Valid for Submission
The code S46.399A is valid for submission for HIPAA-covered transactions.

Code Classification
  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Injuries to the shoulder and upper arm (S40-S49)
      • Injury of muscle, fascia and tendon at shldr/up arm (S46)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code S46.399A is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)


  • Complete division, triceps tendon
  • Partial division, triceps tendon

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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