ICD-10-CM diagnosis code
N80.B4 Endometriosis of the pericardial space
- Billable
- Yes, a complete code (FY2026)
- Category
- N80 Endometriosis
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Other codes in N80
138 complete codes in this category.
- N80.A69Endometriosis of unspecified ureter, unspecified depth
- N80.B1Endometriosis of pleura
- N80.B2Endometriosis of lung
- N80.B31Superficial endometriosis of diaphragm
- N80.B32Deep endometriosis of diaphragm
- N80.B39Endometriosis of diaphragm, unspecified depth
- N80.B4Endometriosis of the pericardial space
- N80.B5Endometriosis of the mediastinal space
- N80.B6Endometriosis of cardiothoracic space
- N80.C0Endometriosis of the abdomen, unspecified
- N80.C10Endometriosis of the anterior abdominal wall, subcutaneous tissue
- N80.C11Endometriosis of the anterior abdominal wall, fascia and muscular layers
Documentation tips
- Make sure the note supports every element of the title, “Endometriosis of the pericardial space”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to N80.
The international WHO ICD-10 also has N80, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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