M65
Header — not billableSynovitis and tenosynovitis
The ICD-10 code for synovitis and tenosynovitis is M65.
M65 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 7 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
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.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under M65
- 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]
- M65.8Other synovitis and tenosynovitisnon-billable header
- M65.9Synovitis and tenosynovitis, unspecifiednon-billable header
Related codes in this category
- M66Spontaneous rupture of synovium and tendonnon-billable header
- M67Other disorders of synovium and tendonnon-billable header
- M65Synovitis and tenosynovitisnon-billable header