2027 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
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
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 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
Code Classification
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to E89.821: 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.
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.
Notes
General instructions on how these codes are used.
- 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 E89.821, its category, or a range that includes it.
Excludes2 4
These codes carry an Excludes2 note naming E89.821: its condition is not part of those codes, and both may be reported when the patient has both.
- E36 Intraoperative complications of endocrine systempostprocedural 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 classifiedintraoperative 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 classifiedintraoperative 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 classifiedpostprocedural absence of endocrine glands (E89.-) names E89.-, which includes this code
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
postprocedural See Also: Complications, surgical procedure;
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
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
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, 2026 through September 30, 2027.
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 920, 919, 921, with relative weights from 0.6719 to 1.7624 depending on complications. Higher weights mean higher Medicare reimbursement.
Is E89.821 a CC or MCC?
CMS lists E89.821 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 E89.821?
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.
