Back to ICD-10 library
ICD-10-CM · FY 2026 APRIL UPDATE

M85.5

Aneurysmal 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
M85.50Aneurysmal bone cyst, unspecified siteBillable
M85.51Aneurysmal bone cyst, shoulderCategory
M85.511Aneurysmal bone cyst, right shoulderBillable
M85.512Aneurysmal bone cyst, left shoulderBillable
M85.519Aneurysmal bone cyst, unspecified shoulderBillable
M85.52Aneurysmal bone cyst, upper armCategory
M85.521Aneurysmal bone cyst, right upper armBillable
M85.522Aneurysmal bone cyst, left upper armBillable
M85.529Aneurysmal bone cyst, unspecified upper armBillable
M85.53Aneurysmal bone cyst, forearmCategory
M85.531Aneurysmal bone cyst, right forearmBillable
M85.532Aneurysmal bone cyst, left forearmBillable
M85.539Aneurysmal bone cyst, unspecified forearmBillable
M85.54Aneurysmal bone cyst, handCategory
M85.541Aneurysmal bone cyst, right handBillable
M85.542Aneurysmal bone cyst, left handBillable
M85.549Aneurysmal bone cyst, unspecified handBillable
M85.55Aneurysmal bone cyst, thighCategory
M85.551Aneurysmal bone cyst, right thighBillable
M85.552Aneurysmal bone cyst, left thighBillable
M85.559Aneurysmal bone cyst, unspecified thighBillable
M85.56Aneurysmal bone cyst, lower legCategory
M85.561Aneurysmal bone cyst, right lower legBillable
M85.562Aneurysmal bone cyst, left lower legBillable
M85.569Aneurysmal bone cyst, unspecified lower legBillable
M85.57Aneurysmal bone cyst, ankle and footCategory
M85.571Aneurysmal bone cyst, right ankle and footBillable
M85.572Aneurysmal bone cyst, left ankle and footBillable
M85.579Aneurysmal bone cyst, unspecified ankle and footBillable
M85.58Aneurysmal 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.