2026 ICD-10-CM Diagnosis Code N70.02Acute oophoritis

ICD-10-CM Codes›N00–N99›N70-N77›N70

ICD-10-CM N70.02
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N70.02 is a billable ICD-10-CM diagnosis code for acute oophoritis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 742 through 743, 757 through 759. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Inflammatory diseases of female pelvic organs.

Code Identity

ICD-10-CM Code
N70.02
Billable Status
Yes — Valid for Submission
Code Describes
Acute oophoritis
Short Description
Acute oophoritis
Same as the full description in the CMS dataset.
Parent Code
N70.0
Acute salpingitis and oophoritis

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN70-N77Inflammatory diseases of female pelvic organs
CategoryN70Salpingitis and oophoritis
This CodeN70.02Acute oophoritis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute oophoritis
  • Subacute oophoritis

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.

    • Oophoritis(cystic) (infectional) (interstitial)
      • acute

Clinical ClassificationClinical

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

CCSR GEN018
Inflammatory diseases of female pelvic organs
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Pelvic Inflammatory Disease

Pelvic inflammatory disease (PID) is an infection of the uterus, ovaries, and other female reproductive organs. PID causes scarring in these organs. This can lead to infertility, ectopic pregnancy, pelvic pain, abscesses (a collection of pus), and other serious problems.

The full article covers:

  • What is pelvic inflammatory disease?
  • What causes pelvic inflammatory disease?
  • What are the symptoms of pelvic inflammatory disease?
  • How is pelvic inflammatory disease diagnosed?
  • What is the treatment for pelvic inflammatory disease?
  • Can pelvic inflammatory disease be prevented?

Read the full article at MedlinePlus

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

Convert N70.02 to ICD-9-CMHistory

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

ICD-9-CM
614.0 Ac salpingo-oophoritis
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 N70.02Overview

Is N70.02 (Acute salpingitis and oophoritis) a billable code?

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

What MS-DRG does N70.02 group to?

When acute oophoritis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 757, 758, 759, with relative weights from 0.6636 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N70.02?

Under the General Equivalence Mappings, acute oophoritis converts to ICD-9-CM 614.0 (ac salpingo-oophoritis). 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.