2026 ICD-10-CM Diagnosis Code E89.821Postprocedural hematoma of an endocrine system organ or structure following other procedure

ICD-10-CM Codes›E00–E89›E89›E89

ICD-10-CM E89.821
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E89.821 is a billable ICD-10-CM diagnosis code for postprocedural hematoma of an endocrine system organ or structure following other 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 endocrine or metabolic complication.

Code Identity

ICD-10-CM Code
E89.821
Billable Status
Yes — Valid for Submission
Code Describes
Postprocedural hematoma of an endocrine system organ or structure following other procedure
Short Description
Postproc hematoma of an endo sys org fol other procedure
Parent Code
E89.82
Postprocedural hematoma and seroma of an endocrine system organ or structure

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE89Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified
CategoryE89Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified
This CodeE89.821Postprocedural hematoma of an endocrine system organ or structure following other procedure

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)
          • endocrine system
            • following other procedure

Clinical ClassificationClinical

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

CCSR END014
Postprocedural or postoperative endocrine or metabolic complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Endocrine Diseases

Your endocrine system includes eight major glands throughout your body. These glands make hormones. Hormones are chemical messengers. They travel through your bloodstream to tissues or organs. Hormones work slowly and affect body processes from head to toe. These include:

Read the full article at MedlinePlus

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

Convert E89.821 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 E89.821 replaces the following previously assigned code(s):

  • E89.811 - Postproc hemor of an endo sys org following other procedure
  • E89.811 - Postproc hemor/hemtom of an endo sys org fol oth procedure
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 E89.821Overview

Is E89.821 a billable code?

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

What MS-DRG does E89.821 group to?

When postprocedural hematoma of an endocrine system organ or structure following other 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 E89.821?

Under the General Equivalence Mappings, postprocedural hematoma of an endocrine system organ or structure following other 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.