2026 ICD-10-CM Diagnosis Code M67.949Unspecified disorder of synovium and tendon, unspecified hand

ICD-10-CM Codes›M00–M99›M65-M67›M67

ICD-10-CM M67.949
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M67.949 is a billable ICD-10-CM diagnosis code for unspecified disorder of synovium and tendon, unspecified 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. Coders also document this condition as disorder of extensor tendon of hand. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Tendon and synovial disorders.

Code Identity

ICD-10-CM Code
M67.949
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified disorder of synovium and tendon, unspecified hand
Short Description
Unsp disorder of synovium and tendon, unspecified hand
Parent Code
M67.94
Unspecified disorder of synovium and tendon, hand

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM65-M67Disorders of synovium and tendon
CategoryM67Other disorders of synovium and tendon
This CodeM67.949Unspecified disorder of synovium and tendon, unspecified hand

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disorder of extensor tendon of hand
  • Disorder of flexor tendon of hand
  • Disorder of tendon of hand
  • Finger joint - soft tissue swelling
  • Finger joint - synovial swelling
  • Swelling of finger joint
  • Swelling of thumb joint
  • Swollen thumb
  • Thumb joint - synovial swelling

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

Hand Injuries and Disorders

No matter how old you are or what you do for a living, you are always using your hands. When there is something wrong with them, you may not be able to do your regular activities.

Read the full article at MedlinePlus

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

Convert M67.949 to ICD-9-CMHistory

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

ICD-9-CM
727.9 Synov/tend/bursa dis NOS
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 M67.949Overview

Is M67.949 (Unspecified disorder of synovium and tendon, hand) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report unspecified disorder of synovium and tendon, unspecified hand on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M67.949 group to?

When unspecified disorder of synovium and tendon, unspecified 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 M67.949?

Under the General Equivalence Mappings, unspecified disorder of synovium and tendon, unspecified hand converts to ICD-9-CM 727.9 (synov/tend/bursa dis NOS). 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.