2026 ICD-10-CM Diagnosis Code H59.362Postprocedural seroma of left eye and adnexa following other procedure

ICD-10-CM Codes›H00–H59›H59›H59

ICD-10-CM H59.362
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H59.362 is a billable ICD-10-CM diagnosis code for postprocedural seroma of left eye and adnexa 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 eye complication.

Code Identity

ICD-10-CM Code
H59.362
Billable Status
Yes — Valid for Submission
Code Describes
Postprocedural seroma of left eye and adnexa following other procedure
Short Description
Postproc seroma of left eye and adnexa fol other procedure
Parent Code
H59.36
Postprocedural seroma of eye and adnexa following other procedure

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH59Intraoperative and postprocedural complications and disorders of eye and adnexa, not elsewhere classified
CategoryH59Intraoperative and postprocedural complications and disorders of eye and adnexa, not elsewhere classified
This CodeH59.362Postprocedural seroma of left eye and adnexa following other procedure

Clinical ClassificationClinical

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

CCSR EYE011
Postprocedural or postoperative eye complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert H59.362 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 H59.362 replaces the following previously assigned code(s):

  • H59.322 - Postproc hemor of left eye and adnexa fol other procedure
  • H59.322 - Postproc hemor/hemtom of left eye and adnexa fol oth 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 H59.362Overview

Is H59.362 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report postprocedural seroma of left eye and adnexa following other procedure on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H59.362 group to?

When postprocedural seroma of left eye and adnexa 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 H59.362?

Under the General Equivalence Mappings, postprocedural seroma of left eye and adnexa following other procedure converts to ICD-9-CM 998.13 (seroma complicting 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.