2027 ICD-10-CM Diagnosis Code N94.0Mittelschmerz

ICD-10-CM Codes›N00–N99›N80-N98›N94

ICD-10-CM N94.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N94.0 is a billable ICD-10-CM diagnosis code for mittelschmerz. 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, 760 through 761. Coders also document this condition as finding of sensation of ovary. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified female genital disorders.

Code Identity

ICD-10-CM Code
N94.0
Billable Status
Yes — Valid for Submission
Code Describes
Mittelschmerz
Short Description
Mittelschmerz
Same as the full description in the CMS dataset.
Parent Code
N94
Pain and other conditions associated with female genital organs and menstrual cycle

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN80-N98Noninflammatory disorders of female genital tract
CategoryN94Pain and other conditions associated with female genital organs and menstrual cycle
This CodeN94.0Mittelschmerz

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Finding of sensation of ovary
  • Mittelschmerz
  • Ovarian pain
  • Pain of endocrine structure

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N94.0: its own notes plus those printed at Chapter 14. A note printed at a category, block or chapter applies to every code under it.

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)

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name N94.0, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming N94.0: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block R10-R19 Symptoms and signs involving the digestive system and abdomen
    symptoms referable to female genital organs (N94.-) names N94.-, which includes this code

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.

CCSR GEN025
Other specified female genital disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Menstruation

Menstruation, also called a period, is normal vaginal bleeding that happens as part of the monthly cycle in women and girls. Every month, the body prepares for pregnancy. If pregnancy does not happen, the uterus (womb) sheds its lining. This blood and tissue leave the body through the vagina.

The full article covers:

  • What is menstruation?
  • What is the menstrual cycle?
  • When will my period start?
  • What are the symptoms of menstruation?
  • What are menstrual irregularities?

Read the full article at MedlinePlus

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

Convert N94.0 to ICD-9-CMHistory

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

ICD-9-CM
625.2 Mittelschmerz
Exact Match The mapping is direct, with no qualifiers.

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 N94.0Overview

What is the ICD-10 code for mittelschmerz?

The ICD-10-CM code for mittelschmerz is N94.0 (sometimes written as N940). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is N94.0 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report mittelschmerz on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does N94.0 group to?

When mittelschmerz is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 760, 761, with relative weights from 0.7039 to 1.8448 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N94.0?

Under the General Equivalence Mappings, mittelschmerz converts to ICD-9-CM 625.2 (mittelschmerz). The mapping is a direct match.