M85.4

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Solitary 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.)
  • solitary 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
M85.4Solitary bone cystNot billable
M85.40Solitary bone cyst, unspecified siteBillable
M85.41Solitary bone cyst, shoulderSubcodes
M85.42Solitary bone cyst, humerusSubcodes
M85.43Solitary bone cyst, ulna and radiusSubcodes
M85.44Solitary bone cyst, handSubcodes
M85.45Solitary bone cyst, pelvisSubcodes
M85.46Solitary bone cyst, tibia and fibulaSubcodes
M85.47Solitary bone cyst, ankle and footSubcodes
M85.48Solitary bone cyst, other siteBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M85.4:

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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