ICD-10-CM
ICD-10 code for Tenosynovitis specified type NEC: M65.88
The ICD-10-CM index points "Tenosynovitis specified type NEC" to M65.88, Other synovitis and tenosynovitis, other site. M65.88 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
More specific codes in M65
A header groups codes and is not billed. A billable code is one you can report.
- M65Synovitis and tenosynovitisHeader
- M65.0Abscess of tendon sheathHeader
- M65.00Abscess of tendon sheath, unspecified siteBillable
- M65.01Abscess of tendon sheath, shoulderHeader
- M65.02Abscess of tendon sheath, upper armHeader
- M65.03Abscess of tendon sheath, forearmHeader
- M65.04Abscess of tendon sheath, handHeader
- M65.05Abscess of tendon sheath, thighHeader
- M65.06Abscess of tendon sheath, lower legHeader
- M65.07Abscess of tendon sheath, ankle and footHeader
- M65.08Abscess of tendon sheath, other siteBillable
- M65.1Other infective (teno)synovitisHeader
- M65.10Other infective (teno)synovitis, unspecified siteBillable
- M65.11Other infective (teno)synovitis, shoulderHeader
- M65.12Other infective (teno)synovitis, elbowHeader
- M65.13Other infective (teno)synovitis, wristHeader
- M65.14Other infective (teno)synovitis, handHeader
- M65.15Other infective (teno)synovitis, hipHeader
- M65.16Other infective (teno)synovitis, kneeHeader
- M65.17Other infective (teno)synovitis, ankle and footHeader
- M65.18Other infective (teno)synovitis, other siteBillable
- M65.19Other infective (teno)synovitis, multiple sitesBillable
- M65.2Calcific tendinitisHeader
- M65.20Calcific tendinitis, unspecified siteBillable
- M65.22Calcific tendinitis, upper armHeader
- M65.23Calcific tendinitis, forearmHeader
- M65.24Calcific tendinitis, handHeader
- M65.25Calcific tendinitis, thighHeader
- M65.26Calcific tendinitis, lower legHeader
- M65.27Calcific tendinitis, ankle and footHeader
- M65.28Calcific tendinitis, other siteBillable
- M65.29Calcific tendinitis, multiple sitesBillable
- M65.3Trigger fingerHeader
- M65.30Trigger finger, unspecified fingerBillable
- M65.31Trigger thumbHeader
- M65.32Trigger finger, index fingerHeader
- M65.33Trigger finger, middle fingerHeader
- M65.34Trigger finger, ring fingerHeader
- M65.35Trigger finger, little fingerHeader
- M65.4Radial styloid tenosynovitis [de Quervain]Billable
- M65.8Other synovitis and tenosynovitisHeader
- M65.80Other synovitis and tenosynovitis, unspecified siteBillable
- M65.81Other synovitis and tenosynovitis, shoulderHeader
- M65.82Other synovitis and tenosynovitis, upper armHeader
- M65.83Other synovitis and tenosynovitis, forearmHeader
- M65.84Other synovitis and tenosynovitis, handHeader
- M65.85Other synovitis and tenosynovitis, thighHeader
- M65.86Other synovitis and tenosynovitis, lower legHeader
- M65.87Other synovitis and tenosynovitis, ankle and footHeader
- M65.88Other synovitis and tenosynovitis, other siteBillable
- M65.89Other synovitis and tenosynovitis, multiple sitesBillable
- M65.9Synovitis and tenosynovitis, unspecifiedHeader
- M65.90Unspecified synovitis and tenosynovitis, unspecified siteBillable
- M65.91Unspecified synovitis and tenosynovitis, shoulderHeader
- M65.92Unspecified synovitis and tenosynovitis, upper armHeader
- M65.93Unspecified synovitis and tenosynovitis, forearmHeader
- M65.94Unspecified synovitis and tenosynovitis, handHeader
- M65.95Unspecified synovitis and tenosynovitis, thighHeader
- M65.96Unspecified synovitis and tenosynovitis, lower legHeader
- M65.97Unspecified synovitis and tenosynovitis, ankle and footHeader
Excludes1
Excludes1 means these codes are not reported together.
From M65. A note on a category applies to every code under it.
- M70.0-Chronic crepitant synovitis of hand and wrist
- current injury - see injury of ligament or tendon by body region
- M70.-Soft tissue disorders related to use, overuse and pressure
Related conditions
Related pages
- M65.88 code detailsNotes, nearby codes, CMS-HCC group
- Category M65Every code under it
- Chapter 13Diseases of the musculoskeletal system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Tenosynovitis specified type NEC?
The ICD-10-CM index points "Tenosynovitis specified type NEC" to M65.88, Other synovitis and tenosynovitis, other site. M65.88 is a billable code.
Is M65.88 billable?
Yes. M65.88 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to M65.88?
The CDC tabular list gives 3 Excludes1 notes (not coded together) for M65.88 and the categories above it. They are listed on this page.
What chapter is M65.88 in?
Chapter 13. Diseases of the musculoskeletal system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.