ICD10BillableValid for clinical use

ICD-10 Code N80.542: Deep endometriosis of the appendix

N80.542 is a billable ICD-10 diagnosis code used to classify Deep endometriosis of the appendix in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the genitourinary system (N00-N99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the genitourinary system (N00-N99).

When is it used?

  • May be used when a clinician documents deep endometriosis of the appendix in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
14Diseases of the genitourinary system (N00-N99)
block
N80-N98Noninflammatory disorders of female genital tract
category
N80Endometriosis
category
N80.5Endometriosis of intestine
category
N80.54Endometriosis of the appendix
currentN80.54

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

UrologistGynecologist

Coding guidelines

Common synonyms

Deep endometriosis of the appendix

Frequently asked questions

Code details

CodeN80.542
SystemICD10
Display nameDeep endometriosis of the appendix
ChapterDiseases of the genitourinary system (N00-N99)
BlockNoninflammatory disorders of female genital tract

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Endometriosis

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code N80.542 for Deep endometriosis of the appendix | HealthAssure