ICD-10-CM Code M87.052

Idiopathic aseptic necrosis of left femur

Version 2020 Billable Code

Valid for Submission

M87.052 is a billable code used to specify a medical diagnosis of idiopathic aseptic necrosis of left femur. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code M87.052 might also be used to specify conditions or terms like aseptic necrosis of bone of hip, aseptic necrosis of bone of left hip, aseptic necrosis of bone of right hip, aseptic necrosis of left medial femoral condyle, aseptic necrosis of medial femoral condyle, bilateral hips aseptic necrosis, etc

Short Description:Idiopathic aseptic necrosis of left femur
Long Description:Idiopathic aseptic necrosis of left femur


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Aseptic necrosis of bone of hip
  • Aseptic necrosis of bone of left hip
  • Aseptic necrosis of bone of right hip
  • Aseptic necrosis of left medial femoral condyle
  • Aseptic necrosis of medial femoral condyle
  • Bilateral hips aseptic necrosis

Diagnostic Related Groups

The ICD-10 code M87.052 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert M87.052 to ICD-9

  • 733.42 - Aseptic necrosis femur (Approximate Flag)
  • 733.43 - Asept necro femur condyl (Approximate Flag)

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Other osteopathies (M86-M90)
      • Osteonecrosis (M87)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


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

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