N85.00 Endometrial hyperplasia, unspecified
The ICD-10-CM code for Endometrial hyperplasia, unspecified is N85.00 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- N80-N98: Noninflammatory disorders of female genital tract (N80-N98)
- Category N85
- 14 codes (12 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to N85.00:
- Hypertrophy, hypertrophic › endometrium (glandular)
- Endometritis (decidual) (nonspecific) (purulent) (senile) (atrophic) (suppurative) › hyperplastic
- Hyperplasia, hyperplastic › endometrium, endometrial (adenomatous) (cystic) (glandular) (glandular-cystic) (polypoid)
- Hyperplasia, hyperplastic › glandularis cystica uteri (interstitialis)
- Atypical, atypism › endometrium › hyperplasia
- Hyperplasia, hyperplastic › uterus, uterine › endometrium (glandular)
Inclusion Terms
- Hyperplasia (adenomatous) (cystic) (glandular) of endometrium
- Hyperplastic endometritis
U.S. Hospital Utilization
- An estimated 2,125 U.S. inpatient stays in 2023 included N85.00 among the documented diagnoses.
- 255 stays listed it as the principal diagnosis.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
CKD staging and code assignment (N18.-)The ICD-10-CM classifies CKD based on severity. The severity of CKD is designated by stages 1-5. Stage 2, code N18.2, equates to mild CKD; stage 3, codes N18.30-N18.32, equate to moderate CKD; and stage 4, code N18.4, equates to severe CKD. Code N18.6, End stage renal disease (ESRD), is assigned when the provider has documented end- stage renal disease (ESRD).
CKD stage plus ESRD: assign N18.6 onlyIf both a stage of CKD and ESRD are documented, assign code N18.6 only.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026