2026 ICD-10-CM Diagnosis Code M25.639Stiffness of unspecified wrist, not elsewhere classified

ICD-10-CM Codes›M00–M99›M20-M25›M25

ICD-10-CM M25.639
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M25.639 is a billable ICD-10-CM diagnosis code for stiffness of unspecified wrist, not elsewhere classified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 555 through 556. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Musculoskeletal pain, not low back pain.

Code Identity

ICD-10-CM Code
M25.639
Billable Status
Yes — Valid for Submission
Code Describes
Stiffness of unspecified wrist, not elsewhere classified
Short Description
Stiffness of unspecified wrist, not elsewhere classified
Same as the full description in the CMS dataset.
Parent Code
M25.63
Stiffness of wrist, not elsewhere classified

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM20-M25Other joint disorders
CategoryM25Other joint disorder, not elsewhere classified
This CodeM25.639Stiffness of unspecified wrist, not elsewhere classified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Active range of wrist abduction - finding
  • Active range of wrist adduction - finding
  • Active range of wrist extension - finding
  • Active range of wrist flexion - finding
  • Active range of wrist pronation - finding
  • Active range of wrist supination - finding
  • Decreased active range of wrist abduction
  • Decreased active range of wrist adduction
  • Decreased active range of wrist extension
  • Decreased active range of wrist flexion
  • Decreased active range of wrist pronation
  • Decreased active range of wrist supination
  • Decreased passive range of wrist abduction
  • Decreased passive range of wrist adduction
  • Decreased passive range of wrist extension
  • Decreased passive range of wrist flexion
  • Decreased passive range of wrist pronation
  • Decreased passive range of wrist supination
  • Decreased range of wrist movement
  • No active range of wrist abduction
  • No active range of wrist adduction
  • No active range of wrist extension
  • No active range of wrist flexion
  • No active range of wrist pronation
  • No active range of wrist supination
  • No passive range of wrist abduction
  • No passive range of wrist adduction
  • No passive range of wrist extension
  • No passive range of wrist flexion
  • No passive range of wrist pronation
  • No passive range of wrist supination
  • No wrist movement
  • Passive range of wrist abduction - finding
  • Passive range of wrist adduction - finding
  • Passive range of wrist extension - finding
  • Passive range of wrist flexion - finding
  • Passive range of wrist pronation - finding
  • Passive range of wrist supination - finding
  • Range of wrist abduction - finding
  • Range of wrist adduction - finding
  • Range of wrist flexion - finding
  • Wrist stiff

Clinical ClassificationClinical

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

CCSR MUS010
Musculoskeletal pain, not low back pain
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Wrist Injuries and Disorders

Your wrist connects your hand to your forearm. It is not one big joint; it has several small joints. This makes it flexible and allows you to move your hand in different ways. The wrist has two big forearm bones and eight small bones known as carpals. It also has tendons and ligaments, which are connective tissues.

The full article covers:

  • What are the types of wrist injuries and disorders?
  • Who is at risk for wrist injuries and disorders?
  • What are the symptoms of wrist injuries and disorders?
  • How are wrist injuries and disorders diagnosed?
  • What are the treatments for wrist injuries and disorders?
  • Can wrist injuries and disorders be prevented?

Read the full article at MedlinePlus

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

Convert M25.639 to ICD-9-CMHistory

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

ICD-9-CM
719.53 Jt stiffnes NEC-forearm
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 M25.639Overview

Is M25.639 (Stiffness of wrist, not elsewhere classified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report stiffness of unspecified wrist, not elsewhere classified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M25.639 group to?

When stiffness of unspecified wrist, not elsewhere classified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 555, 556, with relative weights from 0.8306 to 1.3218 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M25.639?

Under the General Equivalence Mappings, stiffness of unspecified wrist, not elsewhere classified converts to ICD-9-CM 719.53 (jt stiffnes NEC-forearm). 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.