Billable / Specific Code
ICD-10-CM M87.366 is the diagnosis code for Other secondary osteonecrosis, unspecified fibula. This code falls under the section "Other osteopathies" within Chapter 13 — Diseases of the musculoskeletal system and connective tissue (M00-M99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
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.
Understanding where M87.366 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, M87.366 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
M87.366 is the ICD-10-CM diagnosis code for "Other secondary osteonecrosis, unspecified fibula". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of M87.366 is M87.36 ("Other secondary osteonecrosis, tibia and fibula"). M87.366 provides a more specific classification within this category.
M87.366 is located in Section M86-M90 — "Other osteopathies" within Chapter 13 of the ICD-10-CM Tabular List.
Use M87.366 when the patients documented diagnosis matches "Other secondary osteonecrosis, unspecified fibula" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other secondary osteonecrosis, unspecified fibula is M87.366.
Yes, M87.366 can be used as a primary diagnosis code since it is billable and specific.
M87.366 is in Chapter 13 of the ICD-10-CM Tabular List.
Yes, M87.366 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.