Alphabetic Index FY2027

D39.1

Neoplasm of uncertain behavior of ovary

FY2027Chapter 2: Neoplasms/D37–D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

D39.1 is a non-billable ICD-10-CM code header for neoplasm of uncertain behavior of ovary. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are D39.10 Neoplasm of uncertain behavior of unspecified ovary, D39.11 Neoplasm of uncertain behavior of right ovary and D39.12 Neoplasm of uncertain behavior of left ovary. Its coding notes include a Use additional code instruction and 1 Excludes1 entry.

Use additional code

Add the listed code as a secondary code, if known.

This code
  • code to identify any functional activity.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Also from chapter/block level (1 note)
Inherited from D37–D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
  • neoplasms of unspecified behavior (D49.-)

Notes

Also from chapter/block level (9 notes)
Inherited from 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.
Inherited from Chapter 2 Neoplasms
  • 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).

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 13 entries

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More specific codes under D39.1 3