2026 ICD-10-CM Diagnosis Code M84.444APathological fracture, right finger(s), initial encounter for fracture

ICD-10-CM Codes›M00–M99›M80-M85›M84

ICD-10-CM M84.444A
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M84.444A is a billable ICD-10-CM diagnosis code for pathological fracture, right finger(s), initial encounter for fracture. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 542 through 544. Coders also document this condition as pathological fracture - hand. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pathological fracture, initial encounter.

Code Identity

ICD-10-CM Code
M84.444A
Billable Status
Yes — Valid for Submission
Code Describes
Pathological fracture, right finger(s), initial encounter for fracture
Short Description
Pathological fracture, right finger(s), init for fx
Parent Code
M84.444
Pathological fracture, right finger(s)

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM80-M85Disorders of bone density and structure
CategoryM84Disorder of continuity of bone
This CodeM84.444APathological fracture, right finger(s), initial encounter for fracture

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Pathological fracture - hand
  • Pathological fracture of phalanx of finger
  • Pathological fracture of phalanx of finger of right hand
  • Pathological fracture of right hand

Clinical ClassificationClinical

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

CCSR MUS014
Pathological fracture, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Finger Injuries and Disorders

You use your fingers and thumbs to do everything from grasping objects to playing musical instruments to typing. When there is something wrong with them, it can make life difficult. Common problems include:

Read the full article at MedlinePlus

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

Convert M84.444A to ICD-9-CMHistory

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

ICD-9-CM
733.19 Path fx oth specif site
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 M84.444AOverview

Is M84.444A (Pathological fracture, right finger(s)) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report pathological fracture, right finger(s), initial encounter for fracture on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character A in M84.444A mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for pathological fracture, right finger(s), such as an emergency visit or first evaluation.

What MS-DRG does M84.444A group to?

When pathological fracture, right finger(s), initial encounter for fracture is the principal diagnosis on an inpatient stay, it groups to MS-DRG 542, 543, 544, with relative weights from 0.7546 to 1.7665 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M84.444A?

Under the General Equivalence Mappings, pathological fracture, right finger(s), initial encounter for fracture converts to ICD-9-CM 733.19 (path fx oth specif site). 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.