2027 ICD-10-CM Diagnosis Code E89.823Postprocedural seroma of an endocrine system organ or structure following other procedure

ICD-10-CM Codes›E00–E89›E89›E89

ICD-10-CM E89.823
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

E89.823 is a billable ICD-10-CM diagnosis code for postprocedural seroma of an endocrine system organ or structure following other procedure. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 919 through 921. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 26 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative endocrine or metabolic complication.

Code Identity

ICD-10-CM Code
E89.823
Billable Status
Yes — Valid for Submission
Code Describes
Postprocedural seroma of an endocrine system organ or structure following other procedure
Short Description
Postproc seroma of an endo sys org following 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 CodeE89.823Postprocedural seroma of an endocrine system organ or structure following other procedure

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to E89.823: its own notes plus those printed at E89 and Chapter 4. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseases applies to 973 codes
  • transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From E89 Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified applies to 17 codes
  • intraoperative complications of endocrine system organ or structure (E36.0-, E36.1-, E36.8)

Notes

General instructions on how these codes are used.

From Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseases applies to 973 codes
  • All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name E89.823, its category, or a range that includes it.

Excludes2 4

These codes carry an Excludes2 note naming E89.823: its condition is not part of those codes, and both may be reported when the patient has both.

  • E36 Intraoperative complications of endocrine system
    postprocedural endocrine and metabolic complications and disorders, not elsewhere classified (E89.-) names E89.-, which includes this code
  • Block T80-T88 Complications of surgical and medical care, not elsewhere classified
    intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-) names E89.-, which includes this code
  • T81 Complications of procedures, not elsewhere classified
    intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-) names E89.-, which includes this code
  • Z90 Acquired absence of organs, not elsewhere classified
    postprocedural absence of endocrine glands (E89.-) names E89.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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

Convert E89.823 to ICD-9-CMHistory

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

ICD-9-CM
998.13 Seroma complicting proc
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement E89.823 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 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About E89.823Overview

Is E89.823 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report postprocedural seroma of an endocrine system organ or structure following other procedure on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does E89.823 group to?

When postprocedural seroma of an endocrine system organ or structure following other procedure is the principal diagnosis on an inpatient stay, it groups to MS-DRG 920, 919, 921, with relative weights from 0.6719 to 1.7624 depending on complications. Higher weights mean higher Medicare reimbursement.

Is E89.823 a CC or MCC?

CMS lists E89.823 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 26 closely related codes in its exclusion list.

What is the ICD-9 equivalent of E89.823?

Under the General Equivalence Mappings, postprocedural seroma of an endocrine system organ or structure following other procedure converts to ICD-9-CM 998.13 (seroma complicting proc). The mapping is approximate, so confirm the match fits the documentation.