M67.229 – Synovial hypertrophy, not elsewhere classified, unspecified upper arm

ICD-10-CM 2027 diagnosis code · Disorders of synovium and tendon

Billable code

ICD-10-CM code M67.229

Code: M67.229 (claims format: M67229)
Description: Synovial hypertrophy, not elsewhere classified, unspecified upper arm
Short description: Synovial hypertrophy, NEC, unsp upper arm
Billable: Yes – valid for HIPAA-covered transactions
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: M65-M67 Disorders of synovium and tendon
Parent codes: M67 › M67.2 › M67.22

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M67 – Other disorders of synovium and tendon

Excludes1 (not coded here):

palmar fascial fibromatosis [Dupuytren] (M72.0)
tendinitis NOS (M77.9-)
xanthomatosis localized to tendons (E78.2)

M67.2 – Synovial hypertrophy, not elsewhere classified

Excludes1 (not coded here):

villonodular synovitis (pigmented) (M12.2-)

Related codes in M67.22

Frequently asked questions

What is ICD-10 code M67.229?

M67.229 is the ICD-10-CM code for synovial hypertrophy, not elsewhere classified, unspecified upper arm, in the block M65-M67 (Disorders of synovium and tendon).

Is M67.229 a billable code?

Yes. M67.229 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M67.229 belong to?

It belongs to category M67 – Other disorders of synovium and tendon.

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.