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ICD-10-CM · FY 2026 APRIL UPDATE

N80

Endometriosis

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
N80.0Endometriosis of uterusCategory
N80.00Endometriosis of the uterus, unspecifiedBillable
N80.01Superficial endometriosis of the uterusBillable
N80.02Deep endometriosis of the uterusBillable
N80.03Adenomyosis of the uterusBillable
N80.1Endometriosis of ovaryCategory
N80.10Endometriosis of ovary, unspecified depthCategory
N80.101Endometriosis of right ovary, unspecified depthBillable
N80.102Endometriosis of left ovary, unspecified depthBillable
N80.103Endometriosis of bilateral ovaries, unspecified depthBillable
N80.109Endometriosis of ovary, unspecified side, unspecified depthBillable
N80.11Superficial endometriosis of the ovaryCategory
N80.111Superficial endometriosis of right ovaryBillable
N80.112Superficial endometriosis of left ovaryBillable
N80.113Superficial endometriosis of bilateral ovariesBillable
N80.119Superficial endometriosis of ovary, unspecified ovaryBillable
N80.12Deep endometriosis of ovaryCategory
N80.121Deep endometriosis of right ovaryBillable
N80.122Deep endometriosis of left ovaryBillable
N80.123Deep endometriosis of bilateral ovariesBillable
N80.129Deep endometriosis of ovary, unspecified ovaryBillable
N80.2Endometriosis of fallopian tubeCategory
N80.20Endometriosis of fallopian tube, unspecified depthCategory
N80.201Endometriosis of right fallopian tube, unspecified depthBillable
N80.202Endometriosis of left fallopian tube, unspecified depthBillable
N80.203Endometriosis of bilateral fallopian tubes, unspecified depthBillable
N80.209Endometriosis of unspecified fallopian tube, unspecified depthBillable
N80.21Superficial endometriosis of fallopian tubeCategory
N80.211Superficial endometriosis of right fallopian tubeBillable
N80.212Superficial endometriosis of left fallopian tubeBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.