2026 ICD-10-CM Diagnosis Code N99.85Post endometrial ablation syndrome

ICD-10-CM Codes›N00–N99›N99›N99

ICD-10-CM N99.85
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N99.85 is a billable ICD-10-CM diagnosis code for post endometrial ablation syndrome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 760 through 761. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative genitourinary system complication.

Code Identity

ICD-10-CM Code
N99.85
Billable Status
Yes — Valid for Submission
Code Describes
Post endometrial ablation syndrome
Short Description
Post endometrial ablation syndrome
Same as the full description in the CMS dataset.
Parent Code
N99.8
Other intraoperative and postprocedural complications and disorders of genitourinary system

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
CategoryN99Intraoperative and postprocedural complications and disorders of genitourinary system, not elsewhere classified
This CodeN99.85Post endometrial ablation syndrome

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.

    • Syndrome
      • post endometrial ablation

Clinical ClassificationClinical

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

CCSR GEN026
Postprocedural or postoperative genitourinary system complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement N99.85 replaces the following previously assigned code(s):

  • N99.89 - Oth postprocedural complications and disorders of GU sys
FY 2020AddedAdded to the ICD-10-CM code setEffective October 1, 2019.
FY 2021–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N99.85Overview

Is N99.85 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report post endometrial ablation syndrome on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N99.85 group to?

When post endometrial ablation syndrome is the principal diagnosis on an inpatient stay, it groups to MS-DRG 760, 761, with relative weights from 0.5696 to 1.0075 depending on complications. Higher weights mean higher Medicare reimbursement.

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.