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ICD-10-CM · FY 2026 APRIL UPDATE

M85.4

Solitary bone cyst

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
M85.40Solitary bone cyst, unspecified siteBillable
M85.41Solitary bone cyst, shoulderCategory
M85.411Solitary bone cyst, right shoulderBillable
M85.412Solitary bone cyst, left shoulderBillable
M85.419Solitary bone cyst, unspecified shoulderBillable
M85.42Solitary bone cyst, humerusCategory
M85.421Solitary bone cyst, right humerusBillable
M85.422Solitary bone cyst, left humerusBillable
M85.429Solitary bone cyst, unspecified humerusBillable
M85.43Solitary bone cyst, ulna and radiusCategory
M85.431Solitary bone cyst, right ulna and radiusBillable
M85.432Solitary bone cyst, left ulna and radiusBillable
M85.439Solitary bone cyst, unspecified ulna and radiusBillable
M85.44Solitary bone cyst, handCategory
M85.441Solitary bone cyst, right handBillable
M85.442Solitary bone cyst, left handBillable
M85.449Solitary bone cyst, unspecified handBillable
M85.45Solitary bone cyst, pelvisCategory
M85.451Solitary bone cyst, right pelvisBillable
M85.452Solitary bone cyst, left pelvisBillable
M85.459Solitary bone cyst, unspecified pelvisBillable
M85.46Solitary bone cyst, tibia and fibulaCategory
M85.461Solitary bone cyst, right tibia and fibulaBillable
M85.462Solitary bone cyst, left tibia and fibulaBillable
M85.469Solitary bone cyst, unspecified tibia and fibulaBillable
M85.47Solitary bone cyst, ankle and footCategory
M85.471Solitary bone cyst, right ankle and footBillable
M85.472Solitary bone cyst, left ankle and footBillable
M85.479Solitary bone cyst, unspecified ankle and footBillable
M85.48Solitary bone cyst, other siteBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.