2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N81.84 is a billable ICD-10-CM diagnosis code for pelvic muscle wasting. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) 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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N81.84: its own notes plus those printed at N81 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Disuse atrophy of pelvic muscles and anal sphincter

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From N81 Female genital prolapse applies to 16 codes
  • genital prolapse complicating pregnancy, labor or delivery (O34.5-)
  • prolapse and hernia of ovary and fallopian tube (N83.4-)
  • prolapse of vaginal vault after hysterectomy (N99.3)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 14 (N00-N99) Diseases of the genitourinary system applies to 838 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name N81.84, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming N81.84: they are not reported together with it, unless the two conditions are unrelated.

  • N85 Other noninflammatory disorders of uterus, except cervix
    uterine prolapse (N81.-) names N81.-, which includes this code
  • N89.8 Other specified noninflammatory disorders of vagina
    old laceration involving muscles of pelvic floor (N81.8) names N81.8, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming N81.84: its condition is not part of those codes, and both may be reported when the patient has both.

  • M62.5 Muscle wasting and atrophy, not elsewhere classified
    pelvic muscle wasting (N81.84)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N81.84Overview

What is the ICD-10 code for pelvic muscle wasting?

The ICD-10-CM code for pelvic muscle wasting is N81.84 (sometimes written as N8184). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

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 0.7039 to 1.8448 depending on complications. Higher weights mean higher Medicare reimbursement.

Can N81.84 be reported with a code from O34.5?

Not as a rule. The Excludes1 note at N81, which applies to N81.84, lists "genital prolapse complicating pregnancy, labor or delivery (O34.5-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

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.