ICD-10-CM 2027
ICD-10 code for Pinealoma
From the official ICD-10-CM alphabetic index entry “Pinealoma”. Page updated September 29, 2026.
About coding Pinealoma
The ICD-10-CM code for Pinealoma is D44.5 (Neoplasm of uncertain behavior of pineal gland). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on D44.5.
Within D44 (neoplasm of uncertain behavior of endocrine glands), D44.5 is specifically for neoplasm of uncertain behavior of pineal gland. Related codes cover thyroid gland (D44.0), adrenal gland (D44.1), parathyroid gland (D44.2), pituitary gland (D44.3), craniopharyngeal duct (D44.4), carotid body (D44.6), aortic body and other paraganglia (D44.7) and unspecified endocrine gland (D44.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 054 (Nervous System Neoplasms with MCC, relative weight 1.5194) and DRG 055 (Nervous System Neoplasms without MCC, relative weight 1.0296), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Pinealoma codes (official index)
- malignant C75.3 — Malignant neoplasm of pineal gland
Common questions about Pinealoma ICD-10 codes
What is the ICD-10 code for Pinealoma?
- D44.5 — Neoplasm of uncertain behavior of pineal gland. More specific codes apply when the documentation supports them: C75.3.
What is the ICD-10 code for malignant pinealoma?
- C75.3 — Malignant neoplasm of pineal gland.
Is D44.5 billable?
- Yes. D44.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can D44.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict D44.5 as a principal diagnosis.
Is D44.5 a CC or MCC?
- No. D44.5 is neither a CC nor an MCC under MS-DRG v44.0.