ICD-10-CM 2027 diagnosis code

D44.1Neoplasm of uncertain behavior of adrenal gland

Not billable — use a more specific code

D44.1 is a header code, so it can't be reported by itself. Choose one of the 3 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 D44.1

D44.1 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of adrenal gland. It belongs to category D44 (neoplasm of uncertain behavior of endocrine glands), 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 D44 (neoplasm of uncertain behavior of endocrine glands), D44.1 is specifically for neoplasm of uncertain behavior of adrenal gland. Related codes cover thyroid gland (D44.0), parathyroid gland (D44.2), pituitary gland (D44.3), craniopharyngeal duct (D44.4), pineal gland (D44.5), carotid body (D44.6), aortic body and other paraganglia (D44.7) and unspecified endocrine gland (D44.9).

To report this condition, pick the subcode that matches the documentation: D44.10 (gland), D44.11 (gland) and D44.12 (gland).

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 D44.1

Coding notes

Use additional codeAdd a secondary code to fully describe the condition

code to identify any functional activity.

Notes that apply from higher levels

Instructions written at a parent level also apply to D44.1.

› From D44 Neoplasm of uncertain behavior of endocrine glands

Excludes1

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)

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

Table of Drugs & Neoplasms entries

Neoplasm, neoplastic › adrenal — Uncertain Behavior
Neoplasm, neoplastic › adrenal › capsule — Uncertain Behavior
Neoplasm, neoplastic › adrenal › cortex — Uncertain Behavior
Neoplasm, neoplastic › adrenal › gland — Uncertain Behavior
Neoplasm, neoplastic › adrenal › medulla — Uncertain Behavior
Neoplasm, neoplastic › cortex › adrenal — Uncertain Behavior
Neoplasm, neoplastic › medulla › adrenal — Uncertain Behavior
Neoplasm, neoplastic › suprarenal — Uncertain Behavior
Neoplasm, neoplastic › suprarenal › capsule — Uncertain Behavior
Neoplasm, neoplastic › suprarenal › cortex — Uncertain Behavior
Neoplasm, neoplastic › suprarenal › gland — Uncertain Behavior
Neoplasm, neoplastic › suprarenal › medulla — Uncertain Behavior

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 D44.1

Is D44.1 billable?: No. D44.1 is a header code. Report one of its more specific subcodes instead.