2027 ICD-10-CM Diagnosis Code N73Other female pelvic inflammatory diseases

ICD-10-CM Codes›N00–N99›N70-N77›N73

ICD-10-CM N73
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N73 is a non-billable ICD-10-CM category code for other female pelvic inflammatory diseases, so it cannot be submitted on claims. Use a more specific code from this category instead, such as N73.0, N73.1, N73.2, and N73.3.

Code Identity

ICD-10-CM Code
N73
Billable Status
No — Non-Billable Category
Code Describes
Other female pelvic inflammatory diseases
Short Description
Other female pelvic inflammatory diseases
Same as the full description in the CMS dataset.
Chapter
N70-N77
Inflammatory diseases of female pelvic organs

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN70-N77Inflammatory diseases of female pelvic organs
CategoryN73Other female pelvic inflammatory diseases
This CodeN73Other female pelvic inflammatory diseases

Specific Coding for Other female pelvic inflammatory diseasesOverview

Non-specific codes like N73 require more characters. Use one of these billable codes instead:

  • Use N73.0 for Acute parametritis and pelvic cellulitis

  • Use N73.1 for Chronic parametritis and pelvic cellulitis

  • Use N73.2 for Unspecified parametritis and pelvic cellulitis

  • Use N73.3 for Female acute pelvic peritonitis

  • Use N73.4 for Female chronic pelvic peritonitis

  • Use N73.5 for Female pelvic peritonitis, unspecified

  • Use N73.6 for Female pelvic peritoneal adhesions (postinfective)

  • Use N73.8 for Other specified female pelvic inflammatory diseases

  • Use N73.9 for Female pelvic inflammatory disease, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N73: its own notes plus those printed at block N70-N77 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block N70-N77 Inflammatory diseases of female pelvic organs applies to 39 codes
  • inflammatory diseases of female pelvic organs complicating:
  • abortion or ectopic or molar pregnancy (O00-O07, O08.0)
  • pregnancy, childbirth and the puerperium (O23.-, O75.3, O85, O86.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 14 (N00-N99) Diseases of the genitourinary system applies to 838 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

  • code (B95-B97), to identify infectious agent.

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From Block N70-N77 Inflammatory diseases of female pelvic organs applies to 39 codes
  • if applicable, pelvic abscess (K6A.0-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name N73, its category, or a range that includes it.

Code Also 1

These codes say N73 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • K6A.0 Pelvic abscess
    female pelvic inflammatory disease (N73.-)

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.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N73Overview

What is the ICD-10 code for other female pelvic inflammatory diseases?

N73 is the ICD-10-CM category for other female pelvic inflammatory diseases, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is N73 (Other female pelvic inflammatory diseases) a billable code?

No. This is a category header that groups the codes for other female pelvic inflammatory diseases, and headers cannot be submitted on claims. Claims for other female pelvic inflammatory diseases need a more specific code from this category, such as N73.0, N73.1, and N73.2.

Can N73 be reported with O08.0?

Not as a rule. The Excludes1 note at block N70-N77, which applies to N73, lists "abortion or ectopic or molar pregnancy (O00-O07, O08.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

Does N73 need an additional code?

When the condition applies, yes. The Use Additional Code note reads: code (B95-B97), to identify infectious agent.. The additional code is reported after N73.