2026 ICD-10-CM Diagnosis Code M96.840Postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure

ICD-10-CM Codes›M00–M99›M96›M96

ICD-10-CM M96.840
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M96.840 is a billable ICD-10-CM diagnosis code for postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 919 through 921. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative musculoskeletal system complication.

Code Identity

ICD-10-CM Code
M96.840
Billable Status
Yes — Valid for Submission
Code Describes
Postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure
Short Description
Postproc hematoma of a ms structure fol a ms sys procedure
Parent Code
M96.84
Postprocedural hematoma and seroma of a musculoskeletal structure following a procedure

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 CodeM96.840Postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Hematoma due to and following hip arthroplasty
  • Hematoma due to and following knee arthroplasty
  • Hematoma due to and following left hip arthroplasty
  • Hematoma due to and following left knee arthroplasty
  • Hematoma due to and following right hip arthroplasty
  • Hematoma due to and following right knee arthroplasty
  • Hematoma of left hip region
  • Hematoma of left knee region
  • Hematoma of right hip region
  • Hematoma of right knee region

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Complication(s) (from) (of)
      • postprocedural
        • hematoma (of)
          • musculoskeletal structure
            • following musculoskeletal surgery
    • Complication(s) (from) (of)
      • postprocedural
        • hematoma (of)
          • musculoskeletal structure
            • following orthopedic surgery

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

Convert M96.840 to ICD-9-CMHistory

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

ICD-9-CM
998.12 Hematoma complic proc
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement M96.840 replaces the following previously assigned code(s):

  • M96.830 - Postproc hemor of a ms structure fol a ms sys procedure
  • M96.830 - Postproc hemor/hemtom of a ms structure fol a ms sys proc
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M96.840Overview

Is M96.840 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M96.840 group to?

When postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure is the principal diagnosis on an inpatient stay, it groups to MS-DRG 919, 920, 921, with relative weights from 0.6884 to 1.8308 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M96.840?

Under the General Equivalence Mappings, postprocedural hematoma of a musculoskeletal structure following a musculoskeletal system procedure converts to ICD-9-CM 998.12 (hematoma complic proc). 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.