2026 ICD-10-CM Diagnosis Code M96.621Fracture of humerus following insertion of orthopedic implant, joint prosthesis, or bone plate, right arm

ICD-10-CM Codes›M00–M99›M96›M96

ICD-10-CM M96.621
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M96.621 is a billable ICD-10-CM diagnosis code for fracture of humerus following insertion of orthopedic implant, joint prosthesis, or bone plate, right arm. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 559 through 561. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative musculoskeletal system complication.

Code Identity

ICD-10-CM Code
M96.621
Billable Status
Yes — Valid for Submission
Code Describes
Fracture of humerus following insertion of orthopedic implant, joint prosthesis, or bone plate, right arm
Short Description
Fx humerus fol insrt ortho implnt/prosth/bone plt, right arm
Parent Code
M96.62
Fracture of humerus following insertion of orthopedic implant, joint prosthesis, or bone plate

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM96Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
CategoryM96Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
This CodeM96.621Fracture of humerus following insertion of orthopedic implant, joint prosthesis, or bone plate, right arm

Clinical ClassificationClinical

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

CCSR MUS037
Postprocedural or postoperative musculoskeletal system complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Fractures

A fracture is a break in a bone. Fractures are usually caused by injuries. Since they can sometimes be serious, it's important to get medical care right away if you think you have a fracture.

The full article covers:

  • What is a fracture?
  • What are the different types of fractures?
  • What causes fractures?
  • What are the symptoms of a fracture?
  • How are fractures diagnosed?
  • What are the treatments for fractures?
  • Can fractures be prevented?

Read the full article at MedlinePlus

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

Convert M96.621 to ICD-9-CMHistory

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

ICD-9-CM
996.49 Mech com orth dev NEC
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 M96.621Overview

Is M96.621 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report fracture of humerus following insertion of orthopedic implant, joint prosthesis, or bone plate, right arm on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M96.621 group to?

When fracture of humerus following insertion of orthopedic implant, joint prosthesis, or bone plate, right arm is the principal diagnosis on an inpatient stay, it groups to MS-DRG 559, 560, 561, with relative weights from 0.8039 to 1.8649 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M96.621?

Under the General Equivalence Mappings, fracture of humerus following insertion of orthopedic implant, joint prosthesis, or bone plate, right arm converts to ICD-9-CM 996.49 (mech com orth dev NEC). The mapping is approximate, so confirm the match fits the documentation.