Is ICD-10-CM code E34 billable?

No, E34 (Other endocrine disorders) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code E34 belong to?

E34 belongs to Chapter 4 of the ICD-10-CM tabular list: E00–E89 (Endocrine, Nutritional and Metabolic Diseases).

E34Not billable, use a more specific code below

Other endocrine disorders

In Disorders of other endocrine glands (E20-E35), chapter 4: Endocrine, Nutritional and Metabolic Diseases

18 billable codes under E34: 3 are a CC; 3 map to HCC 17 (Cancer Metastatic to Lung, Liver, Brain, and Other Organs; Acute Myeloid Leukemia Except Promyelocytic).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

Instructional notes

Excludes1: not coded here, use a different code

pseudohypoparathyroidism (E20.1)

Also applies, from Disorders of other endocrine glands (E20-E35)

These notes sit on E20-E35 and apply to every code under it, including E34.

Excludes1: not coded here, use a different code

galactorrhea (N64.3)
gynecomastia (N62)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers diabetes mellitus coding, including type, insulin and drug use, pump malfunction and secondary diabetes, plus obesity and obesity class codes.

Diabetes mellitus (page 39)
Obesity (page 42)

Read Section I.C.4 (page 39)

All codes under E34

E34 can't be used on a claim. Pick a billable code below; grey headings group them.

E34 MS-DRGs

As the principal diagnosis, all 18 billable codes under E34 group to MS-DRG 643, 644, or 645 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to E34

Notes on these codes point to E34.

G63 Code First: endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Endocrine Diseases

Your endocrine system includes eight major glands throughout your body. These glands make hormones. Hormones are chemical messengers. They travel through your bloodstream to tissues or organs. Hormones work slowly and affect body processes from head to toe. These include:

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.