M65.929
Billable codeUnspecified synovitis and tenosynovitis, unspecified upper arm
The ICD-10 code for unspecified synovitis and tenosynovitis, unspecified upper arm is M65.929.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Laterality-specific codes exist for this condition — confirm the affected side is documented.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M65.921Unspecified synovitis and tenosynovitis, right upper arm
- M65.922Unspecified synovitis and tenosynovitis, left upper arm
- M65.929Unspecified synovitis and tenosynovitis, unspecified upper arm
Associated MS-DRGs
M65.929 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.