ICD-10 Code N80.321 - Superficial endometriosis of the posterior cul-de-sac

ICD-10-CM Diagnosis Code N80.321

Diagnosis Code: N80.321 (Raw: N80321)

Description: Superficial endometriosis of the posterior cul-de-sac

Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)

Fiscal Year: 2026

CMS Section 111 Status: Valid for reporting (Excluded from No-Fault liability reporting).

Overview & Clinical Details

ICD-10-CM code N80.321 is designated for Superficial endometriosis of the posterior cul-de-sac. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.