2026 ICD-10-CM Diagnosis Code M67.461Ganglion, right knee

ICD-10-CM Codes›M00–M99›M65-M67›M67

ICD-10-CM M67.461
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M67.461 is a billable ICD-10-CM diagnosis code for ganglion, right knee. 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. Coders also document this condition as bilateral ganglion cyst of knees. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Tendon and synovial disorders.

Code Identity

ICD-10-CM Code
M67.461
Billable Status
Yes — Valid for Submission
Code Describes
Ganglion, right knee
Short Description
Ganglion, right knee
Same as the full description in the CMS dataset.
Parent Code
M67.46
Ganglion, knee

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM65-M67Disorders of synovium and tendon
CategoryM67Other disorders of synovium and tendon
This CodeM67.461Ganglion, right knee

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral ganglion cyst of knees
  • Ganglion cyst of left knee
  • Ganglion cyst of right knee
  • Ganglion of knee

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

Connective Tissue Disorders

Your connective tissue supports many different parts of your body, such as your skin, eyes, and heart. It is like a "cellular glue" that gives your body parts their shape and helps keep them strong. It also helps some of your tissues do their work. It is made of many kinds of proteins. Cartilage and fat are types of connective tissue.

Read the full article at MedlinePlus

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

Convert M67.461 to ICD-9-CMHistory

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

ICD-9-CM
727.41 Ganglion of joint
Approximate The match is approximate rather than exact.
ICD-9-CM
727.42 Ganglion of tendon
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 M67.461Overview

Is M67.461 (Ganglion, knee) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report ganglion, right knee on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M67.461 group to?

When ganglion, right knee 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 M67.461?

Under the General Equivalence Mappings, ganglion, right knee converts to ICD-9-CM 727.41 (ganglion of joint) and 727.42 (ganglion of tendon). 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.