ICD-10-CM 2027 diagnosis code
D39.1Neoplasm of uncertain behavior of ovary
D39.1 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.
Looking up by condition? See ICD-10 code for Granulosa cell tumor.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About D39.1
D39.1 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of ovary. It belongs to category D39 (neoplasm of uncertain behavior of female genital organs), block D37-D48 (neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within D39 (neoplasm of uncertain behavior of female genital organs), D39.1 is specifically for neoplasm of uncertain behavior of ovary. Related codes cover uterus (D39.0), placenta (D39.2), other specified female genital organs (D39.8) and female genital organ, unspecified (D39.9).
To report this condition, pick the subcode that matches the documentation: D39.10 (ovary), D39.11 (ovary) and D39.12 (ovary).
Use an additional code to identify any functional activity.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under D39.1
Coding notes
- code to identify any functional activity.
Notes that apply from higher levels
Instructions written at a parent level also apply to D39.1.
Broader instructions also apply from D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes and Chapter 2: Neoplasms.
Alphabetic index entries
13 entriesTerms in the official ICD-10-CM index that lead to D39.1.
- Brenner › tumor (benign) › borderline malignancy
- Brenner › tumor (benign) › proliferating
- Cystadenofibroma › endometrioid › borderline malignancy
- Leydig cell › tumor › unspecified site › female
- Tumor › Brenner › borderline malignancy
- Tumor › Brenner › proliferating
- Tumor › granulosa cell
- Tumor › granulosa cell › juvenile
- Tumor › granulosa cell-theca cell
- Tumor › ovarian stromal
- Tumor › sex cord (-stromal) › with annular tubules
- Tumor › stromal › ovarian
- Tumor › theca cell-granulosa cell
Table of Drugs & Neoplasms entries
- Neoplasm, neoplastic › corpus › albicans — Uncertain Behavior
- Neoplasm, neoplastic › ovary — Uncertain Behavior
Codes whose notes reference D39.1
- D44Excludes1
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about D39.1
Is D39.1 billable?
- No. D39.1 is a header code. Report one of its more specific subcodes instead.