2027 ICD-10-CM Diagnosis Code N83.331Acquired atrophy of right ovary and fallopian tube

ICD-10-CM Codes›N00–N99›N80-N98›N83

ICD-10-CM N83.331
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N83.331 is a billable ICD-10-CM diagnosis code for acquired atrophy of right ovary and fallopian tube. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified female genital disorders.

Code Identity

ICD-10-CM Code
N83.331
Billable Status
Yes — Valid for Submission
Code Describes
Acquired atrophy of right ovary and fallopian tube
Short Description
Acquired atrophy of right ovary and fallopian tube
Same as the full description in the CMS dataset.
Parent Code
N83.33
Acquired atrophy of ovary and fallopian tube

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN80-N98Noninflammatory disorders of female genital tract
CategoryN83Noninflammatory disorders of ovary, fallopian tube and broad ligament
This CodeN83.331Acquired atrophy of right ovary and fallopian tube

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N83.331: its own notes plus those printed at N83 and Chapter 14. A note printed at a category, block or chapter applies to every code under it.

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 N83 Noninflammatory disorders of ovary, fallopian tube and broad ligament applies to 35 codes
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.

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

Convert N83.331 to ICD-9-CMHistory

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

ICD-9-CM
620.3 Acq atrophy ovary & tube
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement N83.331 replaces the following previously assigned code(s):

  • N83.33 - Acquired atrophy of ovary and fallopian tube
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N83.331Overview

What is the ICD-10 code for acquired atrophy of right ovary and fallopian tube?

The ICD-10-CM code for acquired atrophy of right ovary and fallopian tube is N83.331 (sometimes written as N83331). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is N83.331 (Acquired atrophy of ovary and fallopian tube) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report acquired atrophy of right ovary and fallopian tube on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does N83.331 group to?

When acquired atrophy of right ovary and fallopian tube 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.

What is the ICD-9 equivalent of N83.331?

Under the General Equivalence Mappings, acquired atrophy of right ovary and fallopian tube converts to ICD-9-CM 620.3 (acq atrophy ovary & tube). The mapping is approximate, so confirm the match fits the documentation.