2025 ICD-10-CM Diagnosis Code M65.941

Unspecified synovitis and tenosynovitis, right hand

ICD-10-CM Code:
M65.941
ICD-10 Code for:
Unspecified synovitis and tenosynovitis, right hand
Is Billable?
Yes - Valid for Submission
Code Navigator:

M65.941 is a billable diagnosis code used to specify a medical diagnosis of unspecified synovitis and tenosynovitis, right hand. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2024 through September 30, 2025.

Unspecified diagnosis codes like M65.941 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Code Classification

  • Diseases of the musculoskeletal system and connective tissue
    M00–M99
    • Disorders of synovium and tendon
      M65-M67
      • Synovitis and tenosynovitis
        M65

Approximate Synonyms

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

  • Tenosynovitis of bilateral hands
  • Tenosynovitis of left hand
  • Tenosynovitis of right hand

New 2025 ICD-10-CM Code

M65.941 is new to ICD-10-CM code set for the FY 2025, effective October 1, 2024. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2024. This is a new and revised code for the FY 2025 (October 1, 2024 - September 30, 2025).

Replacement Code

M65941 replaces the following previously assigned ICD-10-CM code(s):

  • M65.9 - Synovitis and tenosynovitis, unspecified

Code History