2026 ICD-10-CM Diagnosis Code N98.8Other complications associated with artificial fertilization

ICD-10-CM Codes›N00–N99›N80-N98›N98

ICD-10-CM N98.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N98.8 is a billable ICD-10-CM diagnosis code for other complications associated with artificial fertilization. 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. Coders also document this condition as stilbestrol-related vaginal adenosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative genitourinary system complication.

Code Identity

ICD-10-CM Code
N98.8
Billable Status
Yes — Valid for Submission
Code Describes
Other complications associated with artificial fertilization
Short Description
Other complications associated with artificial fertilization
Same as the full description in the CMS dataset.
Parent Code
N98
Complications associated with artificial fertilization

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN80-N98Noninflammatory disorders of female genital tract
CategoryN98Complications associated with artificial fertilization
This CodeN98.8Other complications associated with artificial fertilization

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Stilbestrol-related vaginal adenosis
  • Vaginal adenosis
  • Venous thrombosis following assisted fertilization

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)
      • artificial
        • fertilization or insemination
          • specified NEC

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

Clinical InformationClinical

  • Vaginal Adenosis

    the presence of glandular structures in the vagina.

Patient EducationClinical

Assisted Reproductive Technology

Assisted reproductive technology (ART) is used to treat infertility. It includes fertility treatments that handle both eggs and sperm. It works by removing eggs from the ovaries. The eggs are then mixed with sperm to make embryos. The embryos are then put back in the parent's body.

Read the full article at MedlinePlus

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

Convert N98.8 to ICD-9-CMHistory

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

ICD-9-CM
997.99 Surg compl-body syst NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N98.8Overview

Is N98.8 (Complications associated with artificial fertilization) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other complications associated with artificial fertilization on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N98.8 group to?

When other complications associated with artificial fertilization 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 N98.8?

Under the General Equivalence Mappings, other complications associated with artificial fertilization converts to ICD-9-CM 997.99 (surg compl-body syst NEC). 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.