N85.02 Endometrial intraepithelial neoplasia [EIN]

Billable ICD-10-CM code, FY2026.

Applicable to

• Endometrial hyperplasia with atypia

Excludes1 (never code together)

• malignant neoplasm of endometrium (with endometrial intraepithelial neoplasia [EIN]) (C54.1)

Applies from N85 Other noninflammatory disorders of uterus, except cervix

Excludes1 (never code together)

• endometriosis (N80.-)
• inflammatory diseases of uterus (N71.-)
• noninflammatory disorders of cervix, except malposition (N86-N88)
• polyp of corpus uteri (N84.0)
• uterine prolapse (N81.-)

MS-DRG index

Defines the logic of DRG(s) 742-743 in MDC 13.

Approximate ICD-9-CM (GEMs)

• 621.33 Endometrial hyperplasia with atypia (approximate)
• 621.35 Endometrial intraepithelial neoplasia [EIN] (approximate)

Code annotations containing back-references to N85.02

Back-references to N85.0

• Type 1 Excludes: N71 Inflammatory disease of uterus, except cervix ("hyperplastic endometritis (N85.0-)")
• Type 1 Excludes: N84.0 Polyp of corpus uteri ("polypoid endometrial hyperplasia (N85.0-)")

Diagnosis Index entries for N85.02

• Hyperplasia, hyperplastic › endometrium, endometrial (adenomatous) (cystic) (glandular) (glandular-cystic) (polypoid) › with atypia

Nearby codes

• N85 Other noninflammatory disorders of uterus, except cervix
• N85.0 Endometrial hyperplasia
• N85.00 Endometrial hyperplasia, unspecified
• N85.01 Benign endometrial hyperplasia
• N85.02 Endometrial intraepithelial neoplasia [EIN] (this code)
• N85.2 Hypertrophy of uterus
• N85.3 Subinvolution of uterus
• N85.4 Malposition of uterus
• N85.5 Inversion of uterus
• N85.6 Intrauterine synechiae