M65.8
Header — not billableOther synovitis and tenosynovitis
The ICD-10 code for other synovitis and tenosynovitis is M65.8.
M65.8 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 10 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under M65.8
- M65.80Other synovitis and tenosynovitis, unspecified site
- M65.81Other synovitis and tenosynovitis, shouldernon-billable header
- M65.82Other synovitis and tenosynovitis, upper armnon-billable header
- M65.83Other synovitis and tenosynovitis, forearmnon-billable header
- M65.84Other synovitis and tenosynovitis, handnon-billable header
- M65.85Other synovitis and tenosynovitis, thighnon-billable header
- M65.86Other synovitis and tenosynovitis, lower legnon-billable header
- M65.87Other synovitis and tenosynovitis, ankle and footnon-billable header
- M65.88Other synovitis and tenosynovitis, other site
- M65.89Other synovitis and tenosynovitis, multiple sites
Related codes in this category
- M65.0Abscess of tendon sheathnon-billable header
- M65.1Other infective (teno)synovitisnon-billable header
- M65.2Calcific tendinitisnon-billable header
- M65.3Trigger fingernon-billable header
- M65.4Radial styloid tenosynovitis [de Quervain]
- M65.9Synovitis and tenosynovitis, unspecifiednon-billable header
- M65.8Other synovitis and tenosynovitisnon-billable header