Synovitis and tenosynovitis, unspecified
- M65.9 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
- ICD-10-CM M65.9 is a new 2025 ICD-10-CM code that became effective on October 1, 2024.
- This is the American ICD-10-CM version of M65.9 – other international versions of ICD-10 M65.9 may differ.
The following code(s) above M65.9 contain annotation back-references
that may be applicable to M65.9:
Approximate Synonyms
- Relapsing seronegative symmetric synovitis with edema
- Remitting seronegative symmetrical synovitis with pitting edema
- Silastic synovitis
- Silicone synovitis
- Synovitis
- Synovitis and tenosynovitis
- Synovitis of bilateral ankle joints
- Synovitis of bilateral foot joints
- Synovitis of bilateral knee joints
- Synovitis of joint of left knee
- Synovitis of knee
- Synovitis of left ankle joint
- Synovitis of left foot joint
- Synovitis of left knee joint
- Synovitis of right ankle joint
- Synovitis of right foot joint
- Synovitis of right knee joint
- Synovitis or tenosynovitis
- Tenosynovitis
- Tenosynovitis of bilateral ankles
- Tenosynovitis of bilateral feet
- Tenosynovitis of bilateral hands
- Tenosynovitis of bilateral wrists
- Tenosynovitis of left ankle
- Tenosynovitis of left foot
- Tenosynovitis of left hand
- Tenosynovitis of left wrist
- Tenosynovitis of right ankle
- Tenosynovitis of right foot
- Tenosynovitis of right hand
- Tenosynovitis of right wrist
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- 2024 (effective 10/1/2023): No change
- 2025 (effective 10/1/2024): Deleted code
- 2025 (effective 10/1/2024): New code