2020 ICD-10-CM Diagnosis Code N85.00

Endometrial hyperplasia, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • N85.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM N85.00 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of N85.00 - other international versions of ICD-10 N85.00 may differ.
Applicable To
  • Hyperplasia (adenomatous) (cystic) (glandular) of endometrium
  • Hyperplastic endometritis
The following code(s) above N85.00 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to N85.00:
  • N00-N99
    2020 ICD-10-CM Range N00-N99

    Diseases of the genitourinary system

    Type 2 Excludes
    • 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)
    Diseases of the genitourinary system
  • N85
    ICD-10-CM Diagnosis Code N85

    Other noninflammatory disorders of uterus, except cervix

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • endometriosis (N80.-)
    • inflammatory diseases of uterus (N71.-)
    • noninflammatory disorders of cervix, except malposition (N86-N88)
    • polyp of corpus uteri (N84.0)
    • uterine prolapse (N81.-)
    Other noninflammatory disorders of uterus, except cervix
Approximate Synonyms
  • Benign (not cancer)endometrial hyperplasia
  • Benign endometrial hyperplasia
  • Endometrial hyperplasia
Clinical Information
  • A proliferation of the endometrial cells resulting in glandular enlargement and budding. The proliferation may or may not be associated with atypia of the endometrial cells. When the hyperplastic changes are excessive, there is formation of complex epithelial structures (complex endometrial hyperplasia).
  • An abnormal overgrowth of the endometrium (the layer of cells that lines the uterus). There are four types of endometrial hyperplasia: simple endometrial hyperplasia, complex endometrial hyperplasia, simple endometrial hyperplasia with atypia, and complex endometrial hyperplasia with atypia. These differ in terms of how abnormal the cells are and how likely it is that the condition will become cancer.
  • Benign proliferation of the endometrium in the uterus. Endometrial hyperplasia is classified by its cytology and glandular tissue. There are simple, complex (adenomatous without atypia), and atypical hyperplasia representing also the ascending risk of becoming malignant.
ICD-10-CM N85.00 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 742 Uterine and adnexa procedures for non-malignancy with cc/mcc
  • 743 Uterine and adnexa procedures for non-malignancy without cc/mcc
  • 760 Menstrual and other female reproductive system disorders with cc/mcc
  • 761 Menstrual and other female reproductive system disorders without cc/mcc

Convert N85.00 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to N85.00:

ICD-10-CM Codes Adjacent To N85.00
N83.9 Noninflammatory disorder of ovary, fallopian tube and broad ligament, unspecified
N84 Polyp of female genital tract
N84.0 Polyp of corpus uteri
N84.1 Polyp of cervix uteri
N84.2 Polyp of vagina
N84.3 Polyp of vulva
N84.8 Polyp of other parts of female genital tract
N84.9 Polyp of female genital tract, unspecified
N85 Other noninflammatory disorders of uterus, except cervix
N85.0 Endometrial hyperplasia
N85.00 …… unspecified
N85.01 Benign endometrial hyperplasia
N85.02 Endometrial intraepithelial neoplasia [EIN]
N85.2 Hypertrophy of uterus
N85.3 Subinvolution of uterus
N85.4 Malposition of uterus
N85.5 Inversion of uterus
N85.6 Intrauterine synechiae
N85.7 Hematometra
N85.8 Other specified noninflammatory disorders of uterus
N85.9 Noninflammatory disorder of uterus, unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.