2026 ICD-10-CM Diagnosis Code M65.141Other infective (teno)synovitis, right hand

ICD-10-CM Codes›M00–M99›M65-M67›M65

ICD-10-CM M65.141
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M65.141 is a billable ICD-10-CM diagnosis code for other infective (teno)synovitis, right hand. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 557 through 558. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Tendon and synovial disorders.

Code Identity

ICD-10-CM Code
M65.141
Billable Status
Yes — Valid for Submission
Code Describes
Other infective (teno)synovitis, right hand
Short Description
Other infective (teno)synovitis, right hand
Same as the full description in the CMS dataset.
Parent Code
M65.14
Other infective (teno)synovitis, hand

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM65-M67Disorders of synovium and tendon
CategoryM65Synovitis and tenosynovitis
This CodeM65.141Other infective (teno)synovitis, right hand

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral suppurative tenosynovitis of flexor tendon of hands
  • Infectious disorder of tendon
  • Pyogenic infection of tendon sheath
  • Suppurative tenosynovitis
  • Suppurative tenosynovitis of flexor tendon of left hand
  • Suppurative tenosynovitis of flexor tendon of right hand
  • Tenosynovitis of bilateral hands
  • Tenosynovitis of left hand
  • Tenosynovitis of right hand

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS009
Tendon and synovial disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Joint Disorders

Your joints are places where two or more bones come together. Your shoulders, elbows, hips, knees, and knuckles are all joints. Your spine has joints, too.

The full article covers:

  • What are joints?
  • What are joint disorders?
  • What diseases can affect the joints?
  • What types of joint disorders happen from sudden injuries?
  • What types of joint disorders happen from overuse?
  • How can I keep my joints healthy?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert M65.141 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
727.09 Synovitis NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M65.141Overview

Is M65.141 (Other infective (teno)synovitis, hand) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other infective (teno)synovitis, right hand on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M65.141 group to?

When other infective (teno)synovitis, right hand is the principal diagnosis on an inpatient stay, it groups to MS-DRG 557, 558, with relative weights from 0.8932 to 1.4869 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M65.141?

Under the General Equivalence Mappings, other infective (teno)synovitis, right hand converts to ICD-9-CM 727.09 (synovitis NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.