2027 ICD-10-CM Diagnosis Code N94.5Secondary dysmenorrhea
ICD-10-CM Codes›N00–N99›N80-N98›N94
- Billable — Valid for Submission
- Chronic Condition
N94.5 is a billable ICD-10-CM diagnosis code for secondary dysmenorrhea. 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 dysmenorrhea. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Menstrual disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Dysmenorrhea
- Pain of uterus
- Secondary dysmenorrhea
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to N94.5: 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.
- 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 N94.5, its category, or a range that includes it.
Excludes2 1
These codes carry an Excludes2 note naming N94.5: 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 abdomensymptoms 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.
Patient EducationClinical
Period Pain
Menstruation, or period, is normal vaginal bleeding that happens as part of a woman's monthly cycle. Many women have painful periods, also called dysmenorrhea. The pain is most often menstrual cramps, which are a throbbing, cramping pain in your lower abdomen.
The full article covers:
- What are painful periods?
- What causes painful periods?
- What can I do about period pain?
- When should I get medical help for my period pain?
- How is the cause of severe period pain diagnosed?
- What are treatments for severe period pain?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert N94.5 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N94.5Overview
What is the ICD-10 code for secondary dysmenorrhea?
The ICD-10-CM code for secondary dysmenorrhea is N94.5 (sometimes written as N945). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is N94.5 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report secondary dysmenorrhea on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does N94.5 group to?
When secondary dysmenorrhea 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 N94.5?
Under the General Equivalence Mappings, secondary dysmenorrhea converts to ICD-9-CM 625.3 (dysmenorrhea). The mapping is approximate, so confirm the match fits the documentation.
