2026 ICD-10-CM Diagnosis Code N70.91Salpingitis, unspecified

ICD-10-CM Codes›N00–N99›N70-N77›N70

ICD-10-CM N70.91
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N70.91 is a billable ICD-10-CM diagnosis code for salpingitis, unspecified. 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. Coders also document this condition as abscess of fallopian tube. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Inflammatory diseases of female pelvic organs.

Code Identity

ICD-10-CM Code
N70.91
Billable Status
Yes — Valid for Submission
Code Describes
Salpingitis, unspecified
Short Description
Salpingitis, unspecified
Same as the full description in the CMS dataset.
Parent Code
N70.9
Salpingitis and oophoritis, unspecified

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN70-N77Inflammatory diseases of female pelvic organs
CategoryN70Salpingitis and oophoritis
This CodeN70.91Salpingitis, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abscess of fallopian tube
  • Abscess of left fallopian tube
  • Abscess of right fallopian tube
  • Salpingitis
  • Xanthogranulomatous salpingitis

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.

    • Metrosalpingitis
    • Salpingitis(catarrhal) (fallopian tube) (nodular) (pseudofollicular) (purulent) (septic)

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

Clinical InformationClinical

  • Salpingitis

    inflammation of the uterine salpinx, the trumpet-shaped fallopian tubes, usually caused by ascending infections of organisms from the lower reproductive tract. salpingitis can lead to tubal scarring, hydrosalpinx, tubal occlusion, infertility, and ectopic pregnancy (pregnancy, ectopic)

  • Acute Salpingitis

    acute inflammation of the fallopian tube. it is most often caused by neisseria gonorrhoeae and chlamydia trachomatis infections. the infections usually originate in the vagina and ascend to the fallopian tube. symptoms include abdominal, pelvic, and lower back pain, pain during ovulation and sexual intercourse, fever, nausea, and vomiting. complications include infertility and ectopic pregnancy.

  • Chronic Salpingitis

    chronic inflammation of the fallopian tube. it usually follows an acute inflammatory attack.

  • Infectious Salpingitis

    an acute or chronic infectious process affecting the fallopian tube. chlamydia trachomatis, neisseria gonorrhea, mycoplasma, staphylococcus, and streptococcus are the most common causative agents.

  • Salpingitis

    acute or chronic inflammation of the fallopian tube. it is most often caused by neisseria gonorrhoeae and chlamydia trachomatis infections. the infections usually originate in the vagina and ascend to the fallopian tube. symptoms include abdominal, pelvic, and lower back pain, pain during ovulation and sexual intercourse, fever, nausea, and vomiting. complications include infertility and ectopic pregnancy.

  • Salpingitis Isthmica Nodosa|SALPINGITIS ISTHMICA NODOSA

    formation of nodules in the isthmus of the fallopian tube due to fallopian tube diverticulosis. it may cause infertility or ectopic pregnancy.

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 N70.91 to ICD-9-CMHistory

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

ICD-9-CM
614.2 Salpingo-oophoritis NOS
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 N70.91Overview

Is N70.91 (Salpingitis and oophoritis, unspecified) a billable code?

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

What MS-DRG does N70.91 group to?

When salpingitis, unspecified 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 N70.91?

Under the General Equivalence Mappings, salpingitis, unspecified converts to ICD-9-CM 614.2 (salpingo-oophoritis NOS). 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.