M85.4

Non-billable

Solitary bone cyst

M85.4 is the ICD-10-CM code for Solitary bone cyst. It is a non-billable category code — use a more specific child code such as M85.40 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M85
Subcodes
9
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

Excludes2 — not included here

  • solitary cyst of jaw (M27.4)

Frequently asked questions

What is ICD-10 code M85.4?
M85.4 is the ICD-10-CM code for "Solitary bone cyst". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M85.4 a billable code?
No — M85.4 is a non-billable header code. Use a more specific child code (such as M85.40) for billing.
What are the subcodes of M85.4?
M85.4 has 9 more specific child codes, including M85.40, M85.41, M85.42.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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