N80.399
✓ Billable
Endometriosis of the pelvic peritoneum, other specified sites, unspecified depth
ICD-10-CM · FY2026 · Diseases of the Genitourinary System
Code
N80.399
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Genitourinary System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code N80.399?
ICD-10-CM code N80.399 represents Endometriosis of the pelvic peritoneum, other specified sites, unspecified depth. It is a billable diagnosis code in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N80.399 billable?
Yes. N80.399 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is N80.399 in?
N80.399 belongs to the Diseases of the Genitourinary System chapter (N00–N99) of ICD-10-CM.
Related codes in the N80 category
N80
Endometriosis
Non-billable
N80.0
Endometriosis of uterus
Non-billable
N80.1
Endometriosis of ovary
Non-billable
N80.2
Endometriosis of fallopian tube
Non-billable
N80.3
Endometriosis of pelvic peritoneum
Non-billable
N80.4
Endometriosis of rectovaginal septum and vagina
Non-billable
N80.5
Endometriosis of intestine
Non-billable
N80.6
Endometriosis in cutaneous scar
Billable
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