M85.4

Hierarchy

Where M85.4 sits in the official hierarchy. Each level is the code it is classified under.

1. M85 Parent Other disorders of bone density and structure
2. M85.4 This code Solitary bone cyst

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

• M85.40 Solitary bone cyst, unspecified site Billable
• M85.41 Solitary bone cyst, shoulder Has subcodes
• M85.42 Solitary bone cyst, humerus Has subcodes
• M85.43 Solitary bone cyst, ulna and radius Has subcodes
• M85.44 Solitary bone cyst, hand Has subcodes
• M85.45 Solitary bone cyst, pelvis Has subcodes
• M85.46 Solitary bone cyst, tibia and fibula Has subcodes
• M85.47 Solitary bone cyst, ankle and foot Has subcodes
• M85.48 Solitary bone cyst, other site Billable

Version History

How M85.4 appears in each release imported from the official files, newest first.

1. FY 2027 Effective October 1, 2026

   Current

   Solitary bone cyst

2. FY 2026 Effective October 1, 2025

   Unchanged

   Solitary bone cyst