FY2025
Effective from
- Specificity changed
Synovitis and tenosynovitis, unspecified
Category — select a more specific code
CDC/NCHS · FY2025For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2015-10-01
Latest recorded change · FY2025
Effective from
Synovitis and tenosynovitis, unspecified
Category — select a more specific code
CDC/NCHS · FY2025| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | No tabular change |
| FY2018 | 2017-10-01 | No tabular change |
| FY2019 | 2018-10-01 | No tabular change |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | No tabular change |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | No tabular change |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | No tabular change |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | Specificity changed |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
Historical mapping only; not an automatic code substitution.
The official Tabular List has no additional instructions at this code level.
Review the instructions inherited from its parent categories below. Inherited instructions ↓
Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
M65.90Unspecified synovitis and tenosynovitis, unspecified siteBillable / specificM65.91Unspecified synovitis and tenosynovitis, shoulderCategory · further specificity requiredM65.92Unspecified synovitis and tenosynovitis, upper armCategory · further specificity requiredM65.93Unspecified synovitis and tenosynovitis, forearmCategory · further specificity requiredM65.94Unspecified synovitis and tenosynovitis, handCategory · further specificity requiredM65.95Unspecified synovitis and tenosynovitis, thighCategory · further specificity requiredM65.96Unspecified synovitis and tenosynovitis, lower legCategory · further specificity requiredM65.97Unspecified synovitis and tenosynovitis, ankle and footCategory · further specificity requiredM65.98Unspecified synovitis and tenosynovitis, other siteBillable / specificM65.99Unspecified synovitis and tenosynovitis, multiple sitesBillable / specificOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| M65.0 | Abscess of tendon sheath | Category · further specificity required |
| M65.1 | Other infective (teno)synovitis | Category · further specificity required |
| M65.2 | Calcific tendinitis | Category · further specificity required |
| M65.3 | Trigger finger | Category · further specificity required |
| M65.4 | Radial styloid tenosynovitis [de Quervain] | Billable / specific |
| M65.8 | Other synovitis and tenosynovitis | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗