M85.5

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Aneurysmal bone cyst

Metadata & Insights
  • Non-billable category (requires more specific sub-code).
  • Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

Instructional Notes

Excludes2(Not included here. Code separately if applicable.)
  • aneurysmal cyst of jaw (M27.4)
General instructions are available for the parent sections:

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M80-M85Disorders of bone density and structure (M80-M85)
M85Other disorders of bone density and structure
M85.5Aneurysmal bone cystNot billable
M85.50Aneurysmal bone cyst, unspecified siteBillable
M85.51Aneurysmal bone cyst, shoulderSubcodes
M85.52Aneurysmal bone cyst, upper armSubcodes
M85.53Aneurysmal bone cyst, forearmSubcodes
M85.54Aneurysmal bone cyst, handSubcodes
M85.55Aneurysmal bone cyst, thighSubcodes
M85.56Aneurysmal bone cyst, lower legSubcodes
M85.57Aneurysmal bone cyst, ankle and footSubcodes
M85.58Aneurysmal bone cyst, other siteBillable
M85.59Aneurysmal bone cyst, multiple sitesBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M85.5:

categoryM85
Other disorders of bone density and structure
View context instructions
chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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