N80.B

Non-Billable

ChapterN00–N99

Ranksubcategory

Official Description

Endometriosis of cardiothoracic space

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 14: Diseases of the Genitourinary System (N00-N99).

Instructional Notes

Includes

Endometriosis of thorax

Code Also

, if applicable:
catamenial hemothorax (J94.2)
catamenial pneumothorax (J93.12)

General instructions are available for the parent sections:

View CH14 Notes

Clinical Hierarchy

CH14Diseases of the genitourinary system (N00-N99)

N80-N98Noninflammatory disorders of female genital tract (N80-N98)

N80Endometriosis

N80.BEndometriosis of cardiothoracic space

N80.B1Endometriosis of pleura

N80.B2Endometriosis of lung

N80.B3Endometriosis of diaphragm

N80.B4Endometriosis of the pericardial space

N80.B5Endometriosis of the mediastinal space

N80.B6Endometriosis of cardiothoracic space

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N80.B:

chapterCH14

Diseases of the genitourinary system (N00-N99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to N80.B. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

10 raw paths

Endometriosis10 unique routes

cardiothoracic space→N80.B

diaphragm→N80.B(4 variants)

deep→N80.B

superficial→N80.B

unspecified depth→N80.B

lung→N80.B

mediastinal space→N80.B

pericardial space→N80.B

pleura→N80.B

thorax→N80.B

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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