2027 ICD-10-CM Diagnosis Code D39.0Neoplasm of uncertain behavior of uterus

ICD-10-CM Codes›C00–D49›D37-D48›D39

ICD-10-CM D39.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

D39.0 is a billable ICD-10-CM diagnosis code for neoplasm of uncertain behavior of uterus. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 731 through 733, 754 through 756. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neoplasms of unspecified nature or uncertain behavior.

Code Identity

ICD-10-CM Code
D39.0
Billable Status
Yes — Valid for Submission
Code Describes
Neoplasm of uncertain behavior of uterus
Short Description
Neoplasm of uncertain behavior of uterus
Same as the full description in the CMS dataset.
Parent Code
D39
Neoplasm of uncertain behavior of female genital organs

Code Classification

ChapterC00–D49Neoplasms
SectionD37-D48Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
CategoryD39Neoplasm of uncertain behavior of female genital organs
This CodeD39.0Neoplasm of uncertain behavior of uterus

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Complex mixed and stromal malignant neoplasm of endometrium of corpus uteri
  • Endometrial stromal tumor
  • Intravenous leiomyomatosis
  • Metastasizing leiomyoma of uterus
  • Neoplasm of exocervix
  • Neoplasm of isthmus of uterus
  • Neoplasm of uncertain behavior of body of uterus
  • Neoplasm of uncertain behavior of endocervix
  • Neoplasm of uncertain behavior of endometrium
  • Neoplasm of uncertain behavior of exocervix
  • Neoplasm of uncertain behavior of isthmus of uterus
  • Neoplasm of uncertain behavior of myometrium
  • Neoplasm of uncertain behavior of uterine cervix
  • Neoplasm of uncertain behavior of uterus

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to D39.0: its own notes plus those printed at block D37-D48 and Chapter 2. A note printed at a category, block or chapter applies to every code under it.

Excludes1

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

From Block D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes applies to 137 codes
  • neoplasms of unspecified behavior (D49.-)

Notes

General instructions on how these codes are used.

From Block D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes applies to 137 codes
  • Categories D37-D44, and D48 classify by site neoplasms of uncertain behavior, i.e., histologic confirmation whether the neoplasm is malignant or benign cannot be made.
From Chapter 2 (C00-D49) Neoplasms applies to 1,730 codes
  • Functional activity
  • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Morphology [Histology]
  • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Primary malignant neoplasms overlapping site boundaries
  • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Malignant neoplasm of ectopic tissue
  • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name D39.0, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming D39.0: they are not reported together with it, unless the two conditions are unrelated.

  • N80.0 Endometriosis of uterus
    stromal endometriosis (D39.0)

Excludes2 1

These codes carry an Excludes2 note naming D39.0: its condition is not part of those codes, and both may be reported when the patient has both.

  • D49 Neoplasms of unspecified behavior
    neoplasms of uncertain behavior (D37-D44, D48) names D37-D44, which includes this code

Notes 1

These notes mention D39.0.

  • Block D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
    Categories D37-D44, and D48 classify by site neoplasms of uncertain behavior, i.e., histologic confirmation whether the neoplasm is malignant or benign cannot be made. names D37-D44, which includes this code

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 NEO072
Neoplasms of unspecified nature or uncertain behavior
Default principal diagnosis: inpatient Yes · outpatient Yes

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
cervix (cervical) (uteri) (uterus)C53.9C79.82D06.9D26.0D39.0D49.59
cervix (cervical) (uteri) (uterus) › canalC53.0C79.82D06.0D26.0D39.0D49.59
cervix (cervical) (uteri) (uterus) › endocervix (canal) (gland)C53.0C79.82D06.0D26.0D39.0D49.59
cervix (cervical) (uteri) (uterus) › exocervixC53.1C79.82D06.1D26.0D39.0D49.59
cervix (cervical) (uteri) (uterus) › external osC53.1C79.82D06.1D26.0D39.0D49.59
cervix (cervical) (uteri) (uterus) › internal osC53.0C79.82D06.0D26.0D39.0D49.59
cervix (cervical) (uteri) (uterus) › nabothian glandC53.0C79.82D06.0D26.0D39.0D49.59
cervix (cervical) (uteri) (uterus) › squamocolumnar junctionC53.8C79.82D06.7D26.0D39.0D49.59
cervix (cervical) (uteri) (uterus) › stumpC53.8C79.82D06.7D26.0D39.0D49.59
corpus › uteriC54.9C79.82D07.0D26.1D39.0D49.59
corpus › uteri › isthmusC54.0C79.82D07.0D26.1D39.0D49.59
endocervix (canal) (gland)C53.0C79.82D06.0D26.0D39.0D49.59
endometrium (gland) (stroma)C54.1C79.82D07.0D26.1D39.0D49.59
exocervixC53.1C79.82D06.1D26.0D39.0D49.59
external › os, cervix uteriC53.1C79.82D06.1D26.0D39.0D49.59
follicle, nabothianC53.0C79.82D06.0D26.0D39.0D49.59
fundus › uterusC54.3C79.82D07.0D26.1D39.0D49.59
internal › os (cervix)C53.0C79.82D06.0D26.0D39.0D49.59
isthmus uteriC54.0C79.82D07.0D26.1D39.0D49.59
junction › squamocolumnar, of cervixC53.8C79.82D06.7D26.0D39.0D49.59
myometriumC54.2C79.82D07.0D26.1D39.0D49.59
nabothian gland (follicle)C53.0C79.82D06.0D26.0D39.0D49.59
os › externalC53.1C79.82D06.1D26.0D39.0D49.59
os › internalC53.0C79.82D06.0D26.0D39.0D49.59
stroma, endometrialC54.1C79.82D07.0D26.1D39.0D49.59
stump, cervicalC53.8C79.82D06.7D26.0D39.0D49.59
uterus, uteri, uterineC55C79.82D07.0D26.9D39.0D49.59
uterus, uteri, uterine › bodyC54.9C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › cervixC53.9C79.82D06.9D26.0D39.0D49.59
uterus, uteri, uterine › cornuC54.9C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › corpusC54.9C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › endocervix (canal) (gland)C53.0C79.82D06.0D26.0D39.0D49.59
uterus, uteri, uterine › endometriumC54.1C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › exocervixC53.1C79.82D06.1D26.0D39.0D49.59
uterus, uteri, uterine › external osC53.1C79.82D06.1D26.0D39.0D49.59
uterus, uteri, uterine › fundusC54.3C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › internal osC53.0C79.82D06.0D26.0D39.0D49.59
uterus, uteri, uterine › isthmusC54.0C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › lower segmentC54.0C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › myometriumC54.2C79.82D07.0D26.1D39.0D49.59
uterus, uteri, uterine › squamocolumnar junctionC53.8C79.82D06.7D26.0D39.0D49.59

Patient EducationClinical

Uterine Diseases

The uterus, or womb, is the place where a fetus grows during pregnancy. Uterine diseases are conditions that affect the uterus. These diseases can be benign (not cancer) or malignant (cancerous). They may affect your menstrual periods, your ability to get pregnant, or the health of your reproductive organs.

The full article covers:

  • What are uterine diseases?
  • What causes uterine diseases?
  • What are the symptoms of uterine diseases?
  • How are uterine diseases diagnosed?
  • What are the treatments for uterine diseases?

Read the full article at MedlinePlus

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

Convert D39.0 to ICD-9-CMHistory

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

ICD-9-CM
236.0 Uncert behav neo uterus
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 D39.0Overview

What is the ICD-10 code for neoplasm of uncertain behavior of uterus?

The ICD-10-CM code for neoplasm of uncertain behavior of uterus is D39.0 (sometimes written as D390). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is D39.0 (Neoplasm of uncertain behavior of female genital organs) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report neoplasm of uncertain behavior of uterus on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does D39.0 group to?

When neoplasm of uncertain behavior of uterus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 732, 755, 756, 754, 733, 731, with relative weights from 0.8583 to 3.5462 depending on complications. Higher weights mean higher Medicare reimbursement.

Can D39.0 be reported with a code from D49?

Not as a rule. The Excludes1 note at block D37-D48, which applies to D39.0, lists "neoplasms of unspecified behavior (D49.-)". 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 D39.0?

Under the General Equivalence Mappings, neoplasm of uncertain behavior of uterus converts to ICD-9-CM 236.0 (uncert behav neo uterus). The mapping is a direct match.