M85.42 – Solitary bone cyst, humerus
ICD-10-CM 2027 diagnosis code · Disorders of bone density and structure
- Code
M85.42(claims format:M8542)- Description
- Solitary bone cyst, humerus
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M80-M85 Disorders of bone density and structure
- Parent codes
- M85 › M85.4
Billable codes under M85.42
M85.42 is a header code and cannot be used on claims. Choose the most specific code:
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M85 – Other disorders of bone density and structure
M85.4 – Solitary bone cyst
- solitary cyst of jaw (M27.4)
Index terms for M85.42
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in M85.4
- M85.40 – Solitary bone cyst, unspecified siteBillable
- M85.41 – Solitary bone cyst, shoulderHeader
- M85.43 – Solitary bone cyst, ulna and radiusHeader
- M85.44 – Solitary bone cyst, handHeader
- M85.45 – Solitary bone cyst, pelvisHeader
- M85.46 – Solitary bone cyst, tibia and fibulaHeader
- M85.47 – Solitary bone cyst, ankle and footHeader
- M85.48 – Solitary bone cyst, other siteBillable
Frequently asked questions
What is ICD-10 code M85.42?
M85.42 is the ICD-10-CM code for solitary bone cyst, humerus, in the block M80-M85 (Disorders of bone density and structure).
Is M85.42 a billable code?
No. M85.42 is a header code with more specific child codes; report one of the billable codes listed above.
What category does M85.42 belong to?
It belongs to category M85 – Other disorders of bone density and structure.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.