M87.8
Non-Billable

Other osteonecrosis

Non-Billable / Non-Specific Code

What is Other osteonecrosis?

ICD-10-CM M87.8 is the diagnosis code for Other osteonecrosis. This code falls under the section "Other osteopathies" within Chapter 13 — Diseases of the musculoskeletal system and connective tissue (M00-M99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

Coding Guidelines for M87.8

Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.

ICD-10-CM Code Hierarchy

Understanding where M87.8 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 10 entries
M87.80Other osteonecrosis, unspecified boneBillableM87.81Other osteonecrosis, shoulderNon-BillableM87.811Other osteonecrosis, right shoulderBillableM87.812Other osteonecrosis, left shoulderBillableM87.819Other osteonecrosis, unspecified shoulderBillableM87.82Other osteonecrosis, humerusNon-BillableM87.821Other osteonecrosis, right humerusBillableM87.822Other osteonecrosis, left humerusBillableM87.829Other osteonecrosis, unspecified humerusBillableM87.83Other osteonecrosis of radius, ulna and carpusNon-BillableM87.831Other osteonecrosis of right radiusBillableM87.832Other osteonecrosis of left radiusBillableM87.833Other osteonecrosis of unspecified radiusBillableM87.834Other osteonecrosis of right ulnaBillableM87.835Other osteonecrosis of left ulnaBillableM87.836Other osteonecrosis of unspecified ulnaBillableM87.837Other osteonecrosis of right carpusBillableM87.838Other osteonecrosis of left carpusBillableM87.839Other osteonecrosis of unspecified carpusBillableM87.84Other osteonecrosis, hand and fingersNon-BillableM87.841Other osteonecrosis, right handBillableM87.842Other osteonecrosis, left handBillableM87.843Other osteonecrosis, unspecified handBillableM87.844Other osteonecrosis, right finger(s)BillableM87.845Other osteonecrosis, left finger(s)BillableM87.849Other osteonecrosis, unspecified finger(s)BillableM87.85Other osteonecrosis, pelvis and femurNon-BillableM87.850Other osteonecrosis, pelvisBillableM87.851Other osteonecrosis, right femurBillableM87.852Other osteonecrosis, left femurBillableM87.859Other osteonecrosis, unspecified femurBillableM87.86Other osteonecrosis, tibia and fibulaNon-BillableM87.861Other osteonecrosis, right tibiaBillableM87.862Other osteonecrosis, left tibiaBillableM87.863Other osteonecrosis, unspecified tibiaBillableM87.864Other osteonecrosis, right fibulaBillableM87.865Other osteonecrosis, left fibulaBillableM87.869Other osteonecrosis, unspecified fibulaBillableM87.87Other osteonecrosis, ankle, foot and toesNon-BillableM87.871Other osteonecrosis, right ankleBillableM87.872Other osteonecrosis, left ankleBillableM87.873Other osteonecrosis, unspecified ankleBillableM87.874Other osteonecrosis, right footBillableM87.875Other osteonecrosis, left footBillableM87.876Other osteonecrosis, unspecified footBillableM87.877Other osteonecrosis, right toe(s)BillableM87.878Other osteonecrosis, left toe(s)BillableM87.879Other osteonecrosis, unspecified toe(s)BillableM87.88Other osteonecrosis, other siteBillableM87.89Other osteonecrosis, multiple sitesBillable
Related Codes

Frequently Asked Questions

Is M87.8 a billable ICD-10-CM code?

No, M87.8 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does M87.8 mean?

M87.8 is the ICD-10-CM diagnosis code for "Other osteonecrosis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of M87.8?

The parent code of M87.8 is M87 ("Osteonecrosis"). M87.8 provides a more specific classification within this category.

What section is M87.8 in?

M87.8 is located in Section M86-M90 — "Other osteopathies" within Chapter 13 of the ICD-10-CM Tabular List.

What are the sub-codes of M87.8?

M87.8 has 10 sub-code(s) that provide more specific detail: M87.80, M87.81, M87.82, M87.83, M87.84 and more.

When should I use M87.8?

Use M87.8 when the patients documented diagnosis matches "Other osteonecrosis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Other osteonecrosis?

The ICD-10-CM code for Other osteonecrosis is M87.8.

Can M87.8 be used for primary diagnosis?

No, M87.8 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is M87.8 in?

M87.8 is in Chapter 13 of the ICD-10-CM Tabular List.

Is M87.8 valid for 2026?

Yes, M87.8 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousM87.39Other secondary osteonecrosis, multiple sitesNext →M87.80Other osteonecrosis, unspecified bone
Code Details
M87.8
Other osteonecrosis
Non-Billable / Non-Specific Code
13 — Diseases of the musculoskeletal system and connective tissue (M00-M99)
M86-M90 — Other osteopathies
2026 ICD-10-CM