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  6. 2026 ICD-10-CM Code M87

2026 ICD-10-CM Diagnosis Code M87

Osteonecrosis

ICD-10-CM Code:
M87
ICD-10 Code for:
Osteonecrosis
Is Billable?
Not Valid for Submission
Code Navigator:

M87 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity from the list below for a diagnosis of osteonecrosis. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Osteonecrosis

Non-specific codes like M87 require more digits to indicate the appropriate level of specificity. Consider using any of the following billable codes with a higher level of specificity when coding for osteonecrosis:

  • M87.0 for Idiopathic aseptic necrosis of bone

  • Use M87.00 for Idiopathic aseptic necrosis of unspecified bone

  • M87.01 for Idiopathic aseptic necrosis of shoulder

  • M87.02 for Idiopathic aseptic necrosis of humerus

  • M87.03 for Idiopathic aseptic necrosis of radius, ulna and carpus

  • M87.04 for Idiopathic aseptic necrosis of hand and fingers

  • M87.05 for Idiopathic aseptic necrosis of pelvis and femur

  • M87.06 for Idiopathic aseptic necrosis of tibia and fibula

  • M87.07 for Idiopathic aseptic necrosis of ankle, foot and toes

  • Use M87.08 for Idiopathic aseptic necrosis of bone, other site

  • Use M87.09 for Idiopathic aseptic necrosis of bone, multiple sites

  • M87.1 for Osteonecrosis due to drugs

  • Use M87.10 for Osteonecrosis due to drugs, unspecified bone

  • M87.11 for Osteonecrosis due to drugs, shoulder

  • M87.12 for Osteonecrosis due to drugs, humerus

  • M87.13 for Osteonecrosis due to drugs of radius, ulna and carpus

  • M87.14 for Osteonecrosis due to drugs, hand and fingers

  • M87.15 for Osteonecrosis due to drugs, pelvis and femur

  • M87.16 for Osteonecrosis due to drugs, tibia and fibula

  • M87.17 for Osteonecrosis due to drugs, ankle, foot and toes

  • M87.18 for Osteonecrosis due to drugs, other site

  • Use M87.19 for Osteonecrosis due to drugs, multiple sites

  • M87.2 for Osteonecrosis due to previous trauma

  • Use M87.20 for Osteonecrosis due to previous trauma, unspecified bone

  • M87.21 for Osteonecrosis due to previous trauma, shoulder

  • M87.22 for Osteonecrosis due to previous trauma, humerus

  • M87.23 for Osteonecrosis due to previous trauma of radius, ulna and carpus

  • M87.24 for Osteonecrosis due to previous trauma, hand and fingers

  • M87.25 for Osteonecrosis due to previous trauma, pelvis and femur

  • M87.26 for Osteonecrosis due to previous trauma, tibia and fibula

  • M87.27 for Osteonecrosis due to previous trauma, ankle, foot and toes

  • Use M87.28 for Osteonecrosis due to previous trauma, other site

  • Use M87.29 for Osteonecrosis due to previous trauma, multiple sites

  • M87.3 for Other secondary osteonecrosis

  • Use M87.30 for Other secondary osteonecrosis, unspecified bone

  • M87.31 for Other secondary osteonecrosis, shoulder

  • M87.32 for Other secondary osteonecrosis, humerus

  • M87.33 for Other secondary osteonecrosis of radius, ulna and carpus

  • M87.34 for Other secondary osteonecrosis, hand and fingers

  • M87.35 for Other secondary osteonecrosis, pelvis and femur

  • M87.36 for Other secondary osteonecrosis, tibia and fibula

  • M87.37 for Other secondary osteonecrosis, ankle and foot

  • Use M87.38 for Other secondary osteonecrosis, other site

  • Use M87.39 for Other secondary osteonecrosis, multiple sites

  • M87.8 for Other osteonecrosis

  • Use M87.80 for Other osteonecrosis, unspecified bone

  • M87.81 for Other osteonecrosis, shoulder

  • M87.82 for Other osteonecrosis, humerus

  • M87.83 for Other osteonecrosis of radius, ulna and carpus

  • M87.84 for Other osteonecrosis, hand and fingers

  • M87.85 for Other osteonecrosis, pelvis and femur

  • M87.86 for Other osteonecrosis, tibia and fibula

  • M87.87 for Other osteonecrosis, ankle, foot and toes

  • Use M87.88 for Other osteonecrosis, other site

  • Use M87.89 for Other osteonecrosis, multiple sites

  • Use M87.9 for Osteonecrosis, unspecified

Code Classification

  • Diseases of the musculoskeletal system and connective tissue
    M00–M99

Clinical Information

  • Bisphosphonate-Associated Osteonecrosis of the Jaw

    necrotic jaws or other maxillofacial skeleton necrosis associated with bisphosphonate use (see bisphosphonates). injury, dental procedures, and trauma can trigger the necrotic process.

  • Osteonecrosis

    death of a bone or part of a bone, either atraumatic or posttraumatic.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Includes

Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • avascular necrosis of bone

Use Additional Code

Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
  • code to identify major osseous defect, if applicable M89.7

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • juvenile osteonecrosis M91 M92
  • osteochondropathies M90 M93

Patient Education


Osteonecrosis

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 misuse
  • 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


[Learn More in MedlinePlus]

Osteonecrosis

Osteonecrosis happens when blood flow to part of a bone is reduced. This can lead to death of bone tissue, causing the bone to break down and joints to collapse.
[Learn More in MedlinePlus]

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
  • FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.