Is ICD-10-CM code E74 billable?

No, E74 (Other disorders of carbohydrate metabolism) 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 E74 belong to?

E74 belongs to Chapter 4 of the ICD-10-CM tabular list: E00–E89 (Endocrine, Nutritional and Metabolic Diseases).

E74Not billable, use a more specific code below

Other disorders of carbohydrate metabolism

In Metabolic disorders (E70-E88), chapter 4: Endocrine, Nutritional and Metabolic Diseases

24 billable codes under E74: 17 are a CC; 7 map to HCC 50 (Amyloidosis, Porphyria, and Other Specified Metabolic Disorders), HCC 49 (Specified Lysosomal Storage Disorders).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

diabetes mellitus (E08-E13)
hypoglycemia NOS (E16.2)
increased secretion of glucagon (E16.3)
mucopolysaccharidosis (E76.0-E76.3)

Also applies, from Metabolic disorders (E70-E88)

These notes sit on E70-E88 and apply to every code under it, including E74.

Excludes1: not coded here, use a different code

androgen insensitivity syndrome (E34.5-)
congenital adrenal hyperplasia (E25.0)
hemolytic anemias attributable to enzyme disorders (D55.-)
Marfan syndrome (Q87.4-)
5-alpha-reductase deficiency (E29.1)

Excludes2: not included here, code separately if applicable

Ehlers-Danlos syndromes (Q79.6-)

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 E74

E74 can't be used on a claim. Pick a billable code below; grey headings group them.

E74 MS-DRGs

As the principal diagnosis, the billable codes under E74 group to MS-DRG 642, 391, or 392 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 642 Inborn and Other Disorders of Metabolism (18 of 24 codes)
DRG 391 Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC (6 of 24 codes)
DRG 392 Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC (6 of 24 codes)

Other codes that refer to E74

Notes on these codes point to E74.

R79 Excludes1: specific findings indicating disorder of carbohydrate metabolism (E73-E74)
R80-R82 Excludes1: specific findings indicating disorder of carbohydrate metabolism (E73-E74)

About the condition

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

Carbohydrate Metabolism Disorders

Metabolism is the process your body uses to make energy from the food you eat. Food is made up of proteins, carbohydrates, and fats. Chemicals in your digestive system (enzymes) break the food parts down into sugars and acids, your body's fuel. Your body can use this fuel right away, or it can store the energy in your body tissues. If you have a metabolic disorder, something goes wrong with this process.

Code history

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