ICD-9 Diagnosis Code 733.49

Asept necrosis bone NEC

Diagnosis Code 733.49

ICD-9: 733.49
Short Description: Asept necrosis bone NEC
Long Description: Aseptic necrosis of bone, other
This is the 2014 version of the ICD-9-CM diagnosis code 733.49

Code Classification
  • Diseases of the musculoskeletal system and connective tissue (710–739)
    • Osteopathies, chondropathies, and acquired musculoskeletal deformities (730-739)
      • 733 Other disorders of bone and cartilage

Information for Medical Professionals

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The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Aseptic necrosis of bone of upper limb
  • Aseptic necrosis of carpal bone
  • Aseptic necrosis of metatarsal
  • Aseptic necrosis of vertebral body
  • Avascular necrosis of bone of hand
  • Avascular necrosis of lateral femoral condyle
  • Avascular necrosis of lunate
  • Avascular necrosis of the capital femoral epiphysis
  • Osteoradionecrosis of the nasal-orbital complex
  • Osteoradionecrosis of the sphenoid bone
  • Osteoradionecrosis of the temporal bone

Index of Diseases and Injuries
References found for the code 733.49 in the Index of Diseases and Injuries:

Information for Patients


Also called: Aseptic necrosis, Avascular necrosis, Ischemic necrosis

Osteonecrosis is a disease caused by reduced blood flow to bones in the joints. In people with healthy bones, new bone is always replacing old bone. In osteonecrosis, the lack of blood causes the bone to break down faster than the body can make enough new bone. The bone starts to die and may break down.

You can have osteonecrosis in one or several bones. It is most common in the upper leg. Other common sites are your upper arm and your knees, shoulders and ankles. The disease can affect men and women of any age, but it usually strikes in your thirties, forties or fifties.

At first, you might not have any symptoms. As the disease gets worse, you will probably have joint pain that becomes more severe. You may not be able to bend or move the affected joint very well.

No one is sure what causes the disease. Risk factors include

  • Long-term steroid treatment
  • Alcohol abuse
  • Joint injuries
  • Having certain diseases, including arthritis and cancer

Doctors use imaging tests and other tests to diagnose osteonecrosis. Treatments include medicines, using crutches, limiting activities that put weight on the affected joints, electrical stimulation and surgery.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

  • Osteonecrosis

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