2026 ICD-10-CM Diagnosis Code N85.8Other specified noninflammatory disorders of uterus

ICD-10-CM Codes›N00–N99›N80-N98›N85

ICD-10-CM N85.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N85.8 is a billable ICD-10-CM diagnosis code for other specified noninflammatory disorders of uterus. 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, 760 through 761. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified female genital disorders.

Code Identity

ICD-10-CM Code
N85.8
Billable Status
Yes — Valid for Submission
Code Describes
Other specified noninflammatory disorders of uterus
Short Description
Other specified noninflammatory disorders of uterus
Same as the full description in the CMS dataset.
Parent Code
N85
Other noninflammatory disorders of uterus, except cervix

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN80-N98Noninflammatory disorders of female genital tract
CategoryN85Other noninflammatory disorders of uterus, except cervix
This CodeN85.8Other specified noninflammatory disorders of uterus

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired abnormality of uterus
  • Acquired atrophy of uterus
  • Arias-Stella effect on endometrium
  • Atrophic endometrium
  • Calcification of uterus
  • Complex cyst of uterine adnexa
  • Cyst of uterine adnexa
  • Fibrosis of uterus
  • Finding of consistency of uterus
  • Finding of pain of uterine contraction
  • Finding of proportion of uterus
  • Finding of sensation of gravid uterus
  • Flaccid uterus
  • Focal disruption of uterus
  • Hydrometra
  • Inadequate development of endometrium
  • Incarceration of uterus
  • Mass of uterus
  • Morphological change in endometrium caused by intrauterine contraceptive device
  • Mucometra
  • Noninflammatory disorder of uterus
  • Old uterine laceration due to obstetric cause
  • Pain of uterus
  • Painful uterine contractions
  • Perforation of uterus
  • Polycystic mass of uterine adnexa
  • Previous uterine surgical scar
  • Reactive cellular changes caused by intrauterine contraceptive device
  • Rupture of uterus
  • Sacculation of uterus
  • Scarring of uterus
  • Small uterus
  • Tender body of uterus
  • Tender scar of gravid uterus
  • Tender scar of lower uterine segment
  • Tender scar of upper uterine segment
  • Tenderness of female genital structure
  • Ulcer of uterus
  • Uterine cornual occlusion
  • Uterine distension syndrome
  • Uterine perforation post procedural
  • Uterine spasm
  • Uterus asymmetrical
  • Uterus boggy
  • Uterus firm
  • Uterus globular in shape
  • Uterus hard
  • Uterus high
  • Uterus irregular in shape
  • Uterus ovoid in shape
  • Very small uterus

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Atrophy of uterus, acquired
  • Fibrosis of uterus NOS

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.

    • Atresia, atretic
      • uterus
        • acquired
    • Atrophy, atrophic(of)
      • endometrium (senile)
    • Atrophy, atrophic(of)
      • myometrium (senile)
    • Atrophy, atrophic(of)
      • uterus, uterine (senile)
    • Atrophy, atrophic(of)
      • uterus, uterine (senile)
        • due to radiation (intended effect)
    • Boggy
      • uterus
    • Calcification
      • uterus
    • Cicatrix(adherent) (contracted) (painful) (vicious)
      • uterus
    • Congestion, congestive
      • uterus
    • Contraction(s), contracture, contracted
      • uterus
    • Cyst(colloid) (mucous) (simple) (retention)
      • endometrium, endometrial (uterus)
    • Cyst(colloid) (mucous) (simple) (retention)
      • myometrium
    • Cyst(colloid) (mucous) (simple) (retention)
      • uterus (body) (corpus) (recurrent)
    • Deformity
      • uterus (congenital)
        • acquired
    • Degeneration, degenerative
      • uterus (cystic)
    • Disease, diseased
      • uterus (noninflammatory)
        • specified NEC
    • Distension, distention
      • uterus
    • Disturbance(s)
      • innervation uterus (parasympathetic) (sympathetic)
    • Dysfunction
      • endometrium
    • Dyskeratosis
      • uterus NEC
    • Erosion
      • uterus
    • Fibrosis, fibrotic
      • uterus (non-neoplastic)
    • Hydrometra
    • Hypoplasia, hypoplastic
      • endometrium
    • Incarceration, incarcerated
      • uterus
    • Laceration
      • uterus
        • nonpuerperal, nontraumatic
    • Laceration
      • uterus
        • old (postpartal)
    • Leukoplakia
      • uterus
    • Membranaceous uterus
    • Metaplasia
      • endometrium (squamous) (uterus)
    • Mucocele
      • uterus
    • Obliteration
      • endometrium
    • Obstruction, obstructed, obstructive
      • uterus
    • Occlusion, occluded
      • uterus
    • Rupture, ruptured
      • uterus (traumatic)
        • nonpuerperal, nontraumatic
    • Scar, scarring
      • uterus
    • Senile, senility
      • endometrium (atrophic)
    • Small(ness)
      • uterus
    • Spasm(s), spastic, spasticity
      • uterus
    • Superinvolution(uterus)
    • Ulcer, ulcerated, ulcerating, ulceration, ulcerative
      • uterus

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

Uterine Diseases

The uterus, or womb, is the place where a fetus grows during pregnancy. Uterine diseases are conditions that affect the uterus. These diseases can be benign (not cancer) or malignant (cancerous). They may affect your menstrual periods, your ability to get pregnant, or the health of your reproductive organs.

The full article covers:

  • What are uterine diseases?
  • What causes uterine diseases?
  • What are the symptoms of uterine diseases?
  • How are uterine diseases diagnosed?
  • What are the treatments for uterine diseases?

Read the full article at MedlinePlus

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

Convert N85.8 to ICD-9-CMHistory

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

ICD-9-CM
621.8 Disorders of uterus NEC
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 N85.8Overview

Is N85.8 (Other noninflammatory disorders of uterus, except cervix) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified noninflammatory disorders of uterus on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N85.8 group to?

When other specified noninflammatory disorders of uterus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 760, 761, with relative weights from 0.5696 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N85.8?

Under the General Equivalence Mappings, other specified noninflammatory disorders of uterus converts to ICD-9-CM 621.8 (disorders of uterus NEC). 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.