M85.4
M85.4: Solitary bone cyst
Non-billable headerICD-10-CM
M85.4 is a non-billable header ICD-10-CM code for solitary bone cyst. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2: not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- solitary cyst of jaw (M27.4)
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead M85.4
9 child codes. Green means billable.
- M85.40Solitary bone cyst, unspecified site
- M85.41Solitary bone cyst, shoulder
- M85.42Solitary bone cyst, humerus
- M85.43Solitary bone cyst, ulna and radius
- M85.44Solitary bone cyst, hand
- M85.45Solitary bone cyst, pelvis
- M85.46Solitary bone cyst, tibia and fibula
- M85.47Solitary bone cyst, ankle and foot
- M85.48Solitary bone cyst, other site