2026 ICD-10-CM Diagnosis Code N81.84Pelvic muscle wasting

ICD-10-CM Codes›N00–N99›N80-N98›N81

ICD-10-CM N81.84
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N81.84 is a billable ICD-10-CM diagnosis code for pelvic muscle wasting. 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. Coders also document this condition as atrophy of skeletal muscle of pelvis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Prolapse of female genital organs.

Code Identity

ICD-10-CM Code
N81.84
Billable Status
Yes — Valid for Submission
Code Describes
Pelvic muscle wasting
Short Description
Pelvic muscle wasting
Same as the full description in the CMS dataset.
Parent Code
N81.8
Other female genital prolapse

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN80-N98Noninflammatory disorders of female genital tract
CategoryN81Female genital prolapse
This CodeN81.84Pelvic muscle wasting

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Atrophy of skeletal muscle of pelvis

Tabular List NotesGuidance

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

Inclusion Terms

  • Disuse atrophy of pelvic muscles and anal sphincter

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.

    • Atrophy, atrophic(of)
      • anal sphincter (disuse)
    • Atrophy, atrophic(of)
      • muscle, muscular (diffuse) (general) (idiopathic) (primary)
        • pelvic (disuse)
    • Atrophy, atrophic(of)
      • pelvic muscle

Clinical ClassificationClinical

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

CCSR GEN020
Prolapse of female genital organs
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Pelvic Floor Disorders

The pelvic floor is a group of muscles and other tissues that form a sling or hammock across the pelvis. In women, it holds the uterus, bladder, bowel, and other pelvic organs in place so that they can work properly. The pelvic floor can become weak or be injured. The main causes are pregnancy and childbirth.

Read the full article at MedlinePlus

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

Convert N81.84 to ICD-9-CMHistory

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

ICD-9-CM
618.83 Pelvic muscle wasting
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About N81.84Overview

Is N81.84 (Other female genital prolapse) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report pelvic muscle wasting on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does N81.84 group to?

When pelvic muscle wasting 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 N81.84?

Under the General Equivalence Mappings, pelvic muscle wasting converts to ICD-9-CM 618.83 (pelvic muscle wasting). The mapping is a direct match.

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.