2020 ICD-10-CM Diagnosis Code N80.9

Endometriosis, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • N80.9 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 N80.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of N80.9 - other international versions of ICD-10 N80.9 may differ.
The following code(s) above N80.9 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 N80.9:
  • 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
Approximate Synonyms
  • Endometriosis
  • Endometriosis (clinical)
Clinical Information
  • (en-do-mee-tree-o-sis) a benign condition in which tissue that looks like endometrial tissue grows in abnormal places in the abdomen.
  • A benign condition in which tissue that looks like endometrial tissue grows in abnormal places in the abdomen.
  • A condition in which functional endometrial tissue is present outside the uterus. It is often confined to the pelvis involving the ovary, the ligaments, cul-de-sac, and the uterovesical peritoneum.
  • A condition where uterine tissues are found outside the uterus
  • Condition in which tissue more or less perfectly resembling the uterine mucous membrane (the endometrium) and containing typical endometrial granular and stromal elements occurs aberrantly in various locations in the pelvic cavity.
  • Endometriosis is a problem affecting a woman's uterus - the place where a baby grows when she's pregnant. Endometriosis is when the kind of tissue that normally lines the uterus grows somewhere else. It can grow on the ovaries, behind the uterus or on the bowels or bladder. Rarely, it grows in other parts of the body. This "misplaced" tissue can cause pain, infertility, and very heavy periods. The pain is usually in the abdomen, lower back or pelvic areas. Some women have no symptoms at all. Having trouble getting pregnant may be the first sign. The cause of endometriosis is not known. Pain medicines and hormones often help. Severe cases may need surgery. There are also treatments to improve fertility in women with endometriosis.
  • The growth of functional endometrial tissue in anatomic sites outside the uterine body. It most often occurs in the pelvic organs.
ICD-10-CM N80.9 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 N80.9 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 N80.9:
  • Endometrioma N80.9
  • Endometriosis N80.9
  • Implant, endometrial N80.9

ICD-10-CM Codes Adjacent To N80.9
N77.1 Vaginitis, vulvitis and vulvovaginitis in diseases classified elsewhere
N80 Endometriosis
N80.0 Endometriosis of uterus
N80.1 Endometriosis of ovary
N80.2 Endometriosis of fallopian tube
N80.3 Endometriosis of pelvic peritoneum
N80.4 Endometriosis of rectovaginal septum and vagina
N80.5 Endometriosis of intestine
N80.6 Endometriosis in cutaneous scar
N80.8 Other endometriosis
N80.9 Endometriosis, unspecified
N81 Female genital prolapse
N81.0 Urethrocele
N81.1 Cystocele
N81.10 …… unspecified
N81.11 …… midline
N81.12 …… lateral
N81.2 Incomplete uterovaginal prolapse
N81.3 Complete uterovaginal prolapse
N81.4 Uterovaginal prolapse, unspecified
N81.5 Vaginal enterocele

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