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ICD-10-CM 2027 diagnosis code

D44Neoplasm of uncertain behavior of endocrine glands

Not billable — use a more specific code

D44 is a header code, so it can't be reported by itself. Choose one of the 9 more specific codes beneath it.

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 D44

D44 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of endocrine glands. It belongs to 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 9 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: D44.0 (gland), D44.1 (gland), D44.2 (gland), D44.3 (gland), D44.4 (duct), D44.5 (gland), D44.6 (body), D44.7 (paraganglia) and 1 more.

Don't report D44 together with the conditions in its Excludes1 note: multiple endocrine adenomatosis (E31.2-), multiple endocrine neoplasia (E31.2-), neoplasm of uncertain behavior of endocrine pancreas (D37.8), neoplasm of uncertain behavior of ovary (D39.1-) and 2 more.

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 D44

Coding notes

Excludes1Not coded here — never report together with this code
  • multiple endocrine adenomatosis (E31.2-)
  • multiple endocrine neoplasia (E31.2-)
  • neoplasm of uncertain behavior of endocrine pancreas (D37.8)
  • neoplasm of uncertain behavior of ovary (D39.1-)
  • neoplasm of uncertain behavior of testis (D40.1-)
  • neoplasm of uncertain behavior of thymus (D38.4)

Notes that apply from higher levels

Instructions written at a parent level also apply to D44.

Broader instructions also apply from D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes and Chapter 2: Neoplasms.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to D44.

Codes whose notes reference D44

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about D44

Is D44 billable?

No. D44 is a header code. Report one of its more specific subcodes instead.