2026 ICD-10-CM Diagnosis Code M21.511Acquired clawhand, right hand

ICD-10-CM Codes›M00–M99›M20-M25›M21

ICD-10-CM M21.511
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M21.511 is a billable ICD-10-CM diagnosis code for acquired clawhand, right hand. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as acquired claw hand. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acquired deformities (excluding foot).

Code Identity

ICD-10-CM Code
M21.511
Billable Status
Yes — Valid for Submission
Code Describes
Acquired clawhand, right hand
Short Description
Acquired clawhand, right hand
Same as the full description in the CMS dataset.
Parent Code
M21.51
Acquired clawhand

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM20-M25Other joint disorders
CategoryM21Other acquired deformities of limbs
This CodeM21.511Acquired clawhand, right hand

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired claw hand
  • Acquired left claw hand
  • Acquired right claw hand
  • Bilateral acquired claw hands
  • Bilateral acquired deformity of hands
  • Claw hand

Clinical ClassificationClinical

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

CCSR MUS023
Acquired deformities (excluding foot)
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 M21.511 to ICD-9-CMHistory

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

ICD-9-CM
736.06 Claw hand
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 M21.511Overview

Is M21.511 (Acquired clawhand) a billable code?

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

What is the ICD-9 equivalent of M21.511?

Under the General Equivalence Mappings, acquired clawhand, right hand converts to ICD-9-CM 736.06 (claw hand). 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.