2026 ICD-10-CM Diagnosis Code M71.442Calcium deposit in bursa, left hand

ICD-10-CM Codes›M00–M99›M70-M79›M71

ICD-10-CM M71.442
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M71.442 is a billable ICD-10-CM diagnosis code for calcium deposit in bursa, left 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 calcium deposit in bursa of bilateral hands. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified connective tissue disease.

Code Identity

ICD-10-CM Code
M71.442
Billable Status
Yes — Valid for Submission
Code Describes
Calcium deposit in bursa, left hand
Short Description
Calcium deposit in bursa, left hand
Same as the full description in the CMS dataset.
Parent Code
M71.44
Calcium deposit in bursa, hand

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM70-M79Other soft tissue disorders
CategoryM71Other bursopathies
This CodeM71.442Calcium deposit in bursa, left hand

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Calcium deposit in bursa of bilateral hands
  • Calcium deposit in bursa of hand
  • Calcium deposit in bursa of left hand
  • Calcium deposit in bursa of right hand

Clinical ClassificationClinical

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

CCSR MUS025
Other specified connective tissue disease
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 M71.442 to ICD-9-CMHistory

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

ICD-9-CM
727.82 Calcium deposit 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 M71.442Overview

Is M71.442 (Calcium deposit in bursa, hand) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report calcium deposit in bursa, left hand on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M71.442 group to?

When calcium deposit in bursa, left 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 M71.442?

Under the General Equivalence Mappings, calcium deposit in bursa, left hand converts to ICD-9-CM 727.82 (calcium deposit 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.