2026 ICD-10-CM Diagnosis Code N90.61Childhood asymmetric labium majus enlargement

ICD-10-CM Codes›N00–N99›N80-N98›N90

ICD-10-CM N90.61
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N90.61 is a billable ICD-10-CM diagnosis code for childhood asymmetric labium majus enlargement. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 742 through 743, 760 through 761. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified female genital disorders.

Code Identity

ICD-10-CM Code
N90.61
Billable Status
Yes — Valid for Submission
Code Describes
Childhood asymmetric labium majus enlargement
Short Description
Childhood asymmetric labium majus enlargement
Same as the full description in the CMS dataset.
Parent Code
N90.6
Hypertrophy of vulva

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN80-N98Noninflammatory disorders of female genital tract
CategoryN90Other noninflammatory disorders of vulva and perineum
This CodeN90.61Childhood asymmetric labium majus enlargement

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • CALME

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • CALME(childhood asymmetric labium majus enlargement)
    • Enlargement, enlarged
      • labium majus, childhood asymmetric (CALME)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR GEN025
Other specified female genital disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Vulvar Disorders

The vulva is the external part of a woman's genitals. Some problems you can have with the vulvar area include:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert N90.61 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
624.3 Hypertrophy of labia
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement N90.61 replaces the following previously assigned code(s):

  • N90.6 - Hypertrophy of vulva
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N90.61Overview

Is N90.61 (Hypertrophy of vulva) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report childhood asymmetric labium majus enlargement on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N90.61 group to?

When childhood asymmetric labium majus enlargement is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 760, 761, with relative weights from 0.5696 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N90.61?

Under the General Equivalence Mappings, childhood asymmetric labium majus enlargement converts to ICD-9-CM 624.3 (hypertrophy of labia). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.