2027 ICD-10-CM Diagnosis Code N71.0Acute inflammatory disease of uterus
ICD-10-CM Codes›N00–N99›N70-N77›N71
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
N71.0 is a billable ICD-10-CM diagnosis code for acute inflammatory disease of uterus. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 742 through 743, 757 through 759. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 71 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Inflammatory diseases of female pelvic organs.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute endometritis
- Acute endomyometritis
- Acute myometritis
- Acute on chronic endometritis
- Acute perimetritis
- Acute uterine inflammatory disease
- Chronic endometritis
- Endomyometritis
- Myometritis
- Perimetritis
- Pyometra
- Pyometra co-occurrent and due to acute inflammatory disease of uterus
- Subacute endometritis
- Subacute endomyometritis
- Subacute myometritis
- Subacute perimetritis
- Subacute pyometra
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to N71.0: its own notes plus those printed at N71, block N70-N77, and Chapter 14. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- endo (myo) metritis
- metritis
- myometritis
- pyometra
- uterine abscess
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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.
- 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 Also
A second code may be needed to fully describe the condition; the note gives no sequencing direction.
- 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 N71.0, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 N71.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N71.0Overview
What is the ICD-10 code for acute inflammatory disease of uterus?
The ICD-10-CM code for acute inflammatory disease of uterus is N71.0 (sometimes written as N710). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is N71.0 (Inflammatory disease of uterus, except cervix) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report acute inflammatory disease of uterus on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does N71.0 group to?
When acute inflammatory disease of uterus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 759, 743, 758, 757, with relative weights from 0.7687 to 1.8448 depending on complications. Higher weights mean higher Medicare reimbursement.
Is N71.0 a CC or MCC?
CMS lists N71.0 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 71 closely related codes in its exclusion list.
Can N71.0 be reported with a code from N85.0?
Not as a rule. The Excludes1 note at N71, which applies to N71.0, lists "hyperplastic endometritis (N85.0-)". 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).
