U.S. ICD-10-CM · FY 2027

D44 ICD-10-CM Code: Neoplasm of uncertain behavior of endocrine glands

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

D44

Neoplasm of uncertain behavior of endocrine glands

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where D44 sits

  1. 1

    Chapter 2

    Neoplasms (C00-D49)

  2. 2

    Section

    Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48)

  3. 3

    Category D44

    Neoplasm of uncertain behavior of endocrine glands

  4. 4

    Code D44

    Neoplasm of uncertain behavior of endocrine glands

More specific choices

Codes under D44

D44 is a non-billable category. Choose the child code that best matches the documented diagnosis.

D44.0

Neoplasm of uncertain behavior of thyroid gland

D44.1

Neoplasm of uncertain behavior of adrenal gland

D44.2

Neoplasm of uncertain behavior of parathyroid gland

D44.3

Neoplasm of uncertain behavior of pituitary gland

D44.4

Neoplasm of uncertain behavior of craniopharyngeal duct

D44.5

Neoplasm of uncertain behavior of pineal gland

D44.6

Neoplasm of uncertain behavior of carotid body

D44.7

Neoplasm of uncertain behavior of aortic body and other paraganglia

D44.9

Neoplasm of uncertain behavior of unspecified endocrine gland

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for D44.

Code first

No “code first” instruction is listed for D44.

Use additional code

No “use additional code” instruction is listed for D44.

Excludes1

Conditions that should not be reported 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)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for D44.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code D44 mean?

D44 is the FY 2027 U.S. ICD-10-CM code for “Neoplasm of uncertain behavior of endocrine glands.”

Is D44 a billable or specific ICD-10-CM code?

No. D44 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is D44 located in ICD-10-CM?

D44 is listed in Chapter 2, Neoplasms (C00-D49), within Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48) (D37–D48), under category D44, Neoplasm of uncertain behavior of endocrine glands.

What coding notes are listed for D44?

No inclusion terms are listed for D44 in this reference record. No code-first instruction is listed. Excludes1 notes: 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). No Excludes2 note is listed.

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