ICD-10-CM 2027
ICD-10 code for endocrine disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › endocrine”. Page updated September 29, 2026.
About coding endocrine disorder
The ICD-10-CM code for endocrine disorder is E34.9 (Endocrine disorder, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on E34.9.
Within E34, choose E34.9 (Endocrine disorder, unspecified) 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 other specified endocrine disorders (E34.8).
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 643 (Endocrine Disorders with MCC, relative weight 1.6139), DRG 644 (Endocrine Disorders with CC, relative weight 1.0044) and DRG 645 (Endocrine Disorders without CC/MCC, relative weight 0.7459), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), 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 endocrine disorder codes (official index)
Common questions about endocrine disorder ICD-10 codes
What is the ICD-10 code for endocrine disorder?
- E34.9 — Endocrine disorder, unspecified. More specific codes apply when the documentation supports them: E89.89, E89.89.
What is the ICD-10 code for postprocedural endocrine disorder?
- E89.89 — Other postprocedural endocrine and metabolic complications and disorders.
Is E34.9 billable?
- Yes. E34.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E34.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E34.9 as a principal diagnosis.
Is E34.9 a CC or MCC?
- No. E34.9 is neither a CC nor an MCC under MS-DRG v44.0.