ICD-10-CM 2027
ICD-10 code for pineal gland dysfunction
From the official ICD-10-CM alphabetic index entry “Dysfunction › pineal gland”. Page updated September 29, 2026.
About coding pineal gland dysfunction
The ICD-10-CM code for pineal gland dysfunction is E34.8 (Other specified endocrine disorders).
Within E34, choose E34.8 (Other specified endocrine disorders) only when documentation doesn't support a more specific option: carcinoid syndrome (E34.0), other hypersecretion of intestinal hormones (E34.1), ectopic hormone secretion, not elsewhere classified (E34.2), short stature due to endocrine disorder (E34.3), constitutional tall stature (E34.4), androgen insensitivity syndrome (E34.5) and endocrine disorder, unspecified (E34.9).
The conditions in its Excludes2 note aren't part of E34.8, but may be coded alongside it if the patient has both: pseudohypoparathyroidism (E20.1).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about pineal gland dysfunction ICD-10 codes
What is the ICD-10 code for pineal gland dysfunction?
- E34.8 — Other specified endocrine disorders.
Is E34.8 billable?
- Yes. E34.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E34.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E34.8 as a principal diagnosis.
Is E34.8 a CC or MCC?
- No. E34.8 is neither a CC nor an MCC under MS-DRG v44.0.